Cascadia Manuals - TM1
Cascadia Manuals - TM1
Cascadia Manuals - TM1
01
Table of Contents
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
Electronic Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Electrical Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
Powernet Distribution Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Main Ground Junction Block (MGJB), Module 280 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
MEGA Fuse Junction Block (MFJB), Module 285 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
Powertrain PDM, Module 286 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
Load Disconnect Switch, Module 293 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
Trailer PDM, Module 296 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 508
PDM Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Troubleshooting
Possible Causes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Diagnostic Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
PNDB Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703
SAM Cab and SAM Chassis Automatic Resetting Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704
Specifications
SAM Chassis Fuses and Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800
SAM Cab Fuses and Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 801
MFJB Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802
Powertrain PDM and Trailer PDM Fuses and Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 803
Primary PNDB Fuses and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 804
PT−PDM
SAM
Cab
SAM
Emergency Power Feed
Chassis
Trailer
PDM
Inverter
MFJB MGJB
Load Disconnect
Switch
04/24/2007 f545016
8
7
6
5
4
3
2
02/27/2012 f001175a
X18
X21
X19
R11
X20
R7
F22
F1 R1 F19 R3
X4
F29
X1
X5
X14
X2
X15
X6
X3
X16
X7
X17
X8
R14
X9 F40
R15
09/19/2007 f545092
01/25/2007 f544954
05/18/2007 f545054
08/02/2010 f545678
4 1
6 3
12/15/2010 f545718
4
11/29/2010 f545710
3 1
4 2
11/29/2010 f545708
3
11/29/2010 f545709
702 — Diagnosis
Refer to the schematic in modules 280 and 285 for an overview of the vehicle power distribution system for trou-
bleshooting. Use Table 1to cross reference the individual modules for each subsystem.
03/09/2011 f545739
704 — SAM Cab and SAM Chassis Automatic Resetting Circuit Protection
IMPORTANT: Do not change the self-resetting circuit breakers without using the special removal tool,
located inside the cover of the SAM device. See Fig. 13. Failure to use the special tool could result in
component damage.
The SAM Chassis and SAM Cab may use self-resetting circuit protection instead of fuses for some circuits. See
Fig. 12.
IMPORTANT: Disconnect the batteries before removing the SAM devices. These devices can be per-
manently damaged if they are removed when power is applied.
Never grip the self-resetting devices with pliers or other tools that squeeze the body of the device. Use the re-
moval tool that is supplied with the SAM. See Fig. 13.
Never test the self-resetting devices with the voltmeter applied directly to the inspection holes. The device can be
tested out of the circuit using an ohm meter on the terminals, or with a non-contact infrared thermometer. See
Fig. 14. When the temperature of the device is above 170 F (77 C), it is in the tripped state. When it cools off,
the circuit will again be energized.
G
B 20 N
+ Nm D
07/12/2012 f545920
1. Connector
2. Relay
3. Self-Resetting Circuit Breaker
Fig. 12, SAM Chassis
07/12/2012 f545919
07/19/2012 f545918a
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
Multiplexing Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Vehicle Datalinks Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
SAE J1587/J1708 Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
SAE J1939 Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Cabin CAN Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
Diagnostic CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
ECU Troubleshooting Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
ECU Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 508
Datalink Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509
Related Subjects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Troubleshooting
General Troubleshooting Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Diagnostic Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703
Possible Causes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704
Specifications
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800
Datalink Communication Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 801
ECU Identification on Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802
nected to the ECUs, which collect and control all information about the components by communicating on a
datalink. See Fig 1.
Headlamps
H
OFF
SAM Cab
Parklamps
LH Headlamp Low Beam
Cab CAN
SAM Chassis
11/20/2006 f543944a
The multiplexed electrical system on this vehicle combines traditional power distribution module (PDM) devices,
such as relays and circuit breakers, with electronic devices (ECUs) that communicate over a vehicle datalink.
The electronic devices can control power distribution to the electrical loads on the vehicle. This is done by moni-
toring inputs (from devices such as sensors and switches) and supplying power to outputs (for devices such as
lighting, displays, gauges, and indicators). This distributed approach to handling switch inputs and controlling
electrical load outputs sharply reduces the number of wires on a vehicle by sharing wires.
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps)
07/02/2007 f040759
J1939 and J1587/J1708 remain the primary datalinks for powertrain control (engine, transmission, and ABS, for
example).
Fault codes are displayed on the instrument cluster (ICU) display for J1587/J1708 or J1939, depending on the
type of ICU installed. Faults from all ECUs can be viewed on ServiceLink or DiagnosticLink.
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps) Engine Control
Module
SAM Chassis
Pneumatic ABS
Module
Modular Switch
Field (Master)
Transmission
Control Module
Sub Bus
HVAC Control
Stalk Switch Switches Front
Head Lamp
(Steering
Switch
Column)
HVAC Control
Switches Rear
Standard
Radio
Optional
VORAD
Engine Display
Qualcomm
07/02/2007 f040753
3
2
05/08/2007 7 f544899
D
E
C
F A B
J
G
H
05/01/2006 f151036b
Diagnostic Connector
Pin Function
A Battery (–)
B Battery (+)
C J1939 CAN High (+)
D J1939 CAN Low (–)
E CAN Shield (ground)
F J1708/J1587 (+)
G J1708/J1587 (–)
H Diagnostic CAN High (+)
J Diagnostic CAN Low (–)
Table 2, Diagnostic Connector
08/29/2008 f544911
1 4 7 10 13 16
2 5 8 11 14 17
3 6 9 12 15 18
12/04/2006 f544912
11/29/2006 f610854
1
04/26/2006 f544831
1. Connector Tee
2. Terminating Resistor
Fig. 9, Connector Tee
04/18/2006 f544832
1. Terminating Resistor
703 — References
Refer to G01.04 — How to Locate a Schematic for information on wiring.
800 — Wiring
Wiring
Wire Color
Datalink
High Low
J1939 Yellow Dark Green
J1587/J1708 Dark Green Orange
Cabin CAN Light Blue White
Brown with
Brown with
Diagnostic CAN Light Blue
White Stripe
Stripe
Table 5, Wiring
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Interface Between Off-Board Tools and Cabin CAN ECUs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
ECU Parameter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Cascadia Data Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Troubleshooting
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Configuring a Replacement Central Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
Specifications
Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800
Central Gateway
Diagnostic
Connector
J1708/1587 Databus
05/08/2012 f545898
The CGW receives battery power and ground from the SAM Cab; power comes through fuse F20 (2A) and out
connector X3, pin 18 on the SAM Cab.
For instructions on how to use ServiceLink to flash the software of a CAN ECU like the Central Gateway, refer to
the ServiceLink User Guide or ServiceLink Help user documentation, available in ServiceLink’s "Help" menu.
Cabin CAN
Diagnostic
Databus Connector
SAM Cab 120 Ω
SAE J1939
Databus Engine Control Engine CAN
Module
Databus
Starpoint Connector
60 Ω Motor
ABS Control Module
SAM Chassis Module
Modular Switch
Field (Master) After Treatment
Transmission
Control Module Control Module
Slave Switch
Control Panels
Instrument Gauge
Cluster
Databus
HVAC Control
Switches Front
Slave Switch
Control Panels MSF
Sub Bus Databus
HVAC Control
Switches Rear
VORAD
120 Ω
Other Optional
J1708 ECU’s
05/08/2012 f040753a
11/29/2006 f610854
D
E
C
F A B
J
G
H
05/01/2006 f151036b
Diagnostic Connector
Pin Function
A Battery (–)
B Battery (+)
C J1939 CAN High
D J1939 CAN Low
E Reserved
Diagnostic Connector
Pin Function
F J1708/J1587 (+)
G J1708/J1587 (–)
H Diagnostic CAN High
J Diagnostic CAN Low
Table 1, Diagnostic Connector
08/29/2008 f544911
9. Select the faults tab in ServiceLink and clear fault history for all communication protocols.
800 — Parameters
Parameters
Module Part Number Description Parameter ECU
Gateway configuration, Cascadia
gateway. For use on Cascadia
050 447 00 27 PARM-CGW, CFG, CAS
vehicles only. Applies to Gateway
software version 09.33.000 or later. Central
835
Gateway configuration, simplified Gateway
gateway. For use on non-Cascadia
050 447 01 27 PARM-CGW, CFG, SG
vehicles only. DO NOT use on
Cascadia.
Table 4, Parameters
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Fuses and Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
Datalink Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Diagnostic CAN Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Functional Messaging and ECU Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
ECU Configuratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
Datalink Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Pinout Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602
Fuse Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603
Relay Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604
Troubleshooting
Troubleshooting Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Possible Causes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703
Grounded Pins and Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704
Fused and FET Controlled Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 705
Relayed Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 706
Logic Controlled Unfused Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 707
Logic Controlled Relayed Fused Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 708
Unfused Constant Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 709
Fused Battery Pass-Through Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 710
Specifications
Maximum Current Pin List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800
SAM Chassis—Signal Detect and Actuation Module Chassis; this ECU controls mainly chassis-related function-
ality. See G02.05 — SAM Chassis for more information.
SPN—Suspect Parameter Number. The part of a J1939 or CAN fault code that identifie how part of a device, or
item on a device, failed.
Any fault reported on the Cabin CAN is translated to Diagnostics CAN by the CGW, and can be displayed when
requested by an off-board tool, such as ServiceLink. Similarly, an off-board tool is able to display input and out-
put pin status information, software interlocks, and allows a user to control inputs or outputs for troubleshooting.
This information is displayed in ServiceLink’s Datalink Monitor (DLM) templates.
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps) Engine Control
Module
SAM Chassis
Pneumatic ABS
Module
Modular Switch
Field (Master)
Transmission
Control Module
Sub Bus
HVAC Control
Stalk Switch Switches Front
Head Lamp
(Steering
Switch
Column)
HVAC Control
Switches Rear
Standard
Radio
Optional
VORAD
Engine Display
Qualcomm
07/02/2007 f040753
2 3
6
07/18/2007 f544916
NOTE: J1939 and J1708 ECUs in this diagram are not intended to represent actual vehicle configura
tion.
02/07/2007 f544945
X18 X21
X19
X20
X18
X21
X19
R11
X20
R7
F22
F1 R1 F19 R3
X4
F29
X1
X5
X14
X2
X15
X6
X3
X16
X7
X17
X8
R14
X9 F40
R15
09/19/2007 f545092
NOTE: Not all fuse and relay locations are labeled in this image. Locations for fuses and relays in the
middle can be determined based on end labels of a row. For example, fuse F17 is one above F18,
and R8 is one below R7 and two above R10. All connectors are labeled in this image.
D
E
C
F A B
J
G
H
05/01/2006 f151036b
Diagnostic Connector
Pin Function
A Battery (–)
B Battery (+)
C J1939 CAN High (+)
D J1939 CAN Low (–)
E No Connection
F J1708/J1587 (+)
G J1708/J1587 (–)
H Diagnostic CAN High (+)
J Diagnostic CAN Low (–)
Table 1, Diagnostic Connector
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
Transmission temperature gauge, Transmission temperature gauge,
X1 1 —
Ignition Ignition
X1 2 Hands-Free Phone, Ground Not Connected —
X1 3 Cabin HVAC Controller, Battery Cabin HVAC Controller, Battery —
X1 4 Hands-Free Phone, Ignition Not Connected —
X1 5 Heated Seats, Ground Not Connected —
X1 6 Sleeper HVAC Controller, Battery Sleeper HVAC Controller, Battery —
X1 7 Hands-Free Phone, Battery Not Connected —
Auxiliary Circulation Fan,
X1 8 Not Connected —
Sleeper, Ground
Transmission Shift Control Panel, Transmission Shift Control Panel,
X1 9 —
Battery Battery
Cabin HVAC Controller,
X1 10 Cabin HVAC Controller, Accessory —
Accessory
X1 11 Sleeper HVAC Controller, Ground Sleeper HVAC Controller, Ground —
X1 12 Heated Seats, Ignition Not Connected —
Auxiliary Circulation Fan,
X1 13 Not Connected —
Sleeper, Battery
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
X1 14 Cabin HVAC Controller, Ground Cabin HVAC Controller, Ground —
Sleeper HVAC Controller,
X1 15 Sleeper HVAC Controller, Accessory —
Accessory
X2 1 Auxiliary Heater (ESPAR), Power Not Connected —
X2 2 MSF, Ground MSF, Ground —
X2 3 OBD J1939, Battery OBD J1939, Battery —
X2 4 VCU/CPC, Ignition VCU/CPC, Ignition —
Area Lighting (Lower Bunk Area
Area Lighting (Lower Bunk Area and
X2 5 and Sleeper Work Surface), —
Sleeper Work Surface), Ground
Ground
X2 6 Reserved for future use Reserved for future use —
Starter relay output from Engine Starter relay output from Engine
X2 7 —
Controller (Optimized Idle) Controller (Optimized Idle)
Diagnostic Connector, Ground 1
X2 8 Diagnostic Connector, Ground 1 (GND1) —
(GND1)
X2 9 Diagnostic Connector, Ignition Diagnostic Connector, Ignition —
Hardwired ISS (Ignition Switch Hardwired ISS (Ignition Switch Status),
X2 10 —
Status), Cab Cab
X2 11 Diagnostic Connector, Ground 2 Diagnostic Connector, Ground 2 —
X2 12 MSF, Battery MSF, Battery —
Collision Avoidance System,
X2 13 Not Connected —
Battery
Collision Avoidance System,
X2 14 Not Connected —
Ignition
Area Lighting (Lower Bunk Area
Area Lighting (Lower Bunk Area and
X2 15 and Sleeper Work Surface), —
Sleeper Work Surface), Battery
Battery
Collision Avoidance System,
X2 16 Not Connected —
Ground
Auxiliary Heater (ESPAR),
X2 17 Not Connected —
Ground
X2 18 Emergency Battery, Cab Emergency Battery, Cab —
GPS (Global Positioning
X3 1 Not Connected —
System), Battery
Antitheft Warning System,
X3 2 Not Connected —
Battery
12V Power Receptacle 4 12V Power Receptacle 4 (Sleeper,
X3 3 —
(Sleeper, Cigar), Battery Cigar), Battery
X3 4 Advertising Light, Accessory Not Connected —
X3 5 Standalone HVAC, Battery Standalone HVAC, Battery —
X3 6 SRS Airbag, Ignition Not Connected —
X3 7 Utility Light Utility Light —
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
X3 8 Not Connected Not Connected —
X3 9 Amplifie Power, Accessory Not Connected —
GPS (Global Positioning
X3 10 Not Connected —
System), Ignition
X3 11 Radio, Battery Radio, Battery —
X3 12 Not Connected Not Connected —
X3 13 Standalone HVAC, Ground Standalone HVAC, Ground —
X3 14 SRS Airbag, Ground Not Connected —
12V Power Receptacle 3 12V Power Receptacle 3 (Sleeper,
X3 15 —
(Sleeper, Cigar), Battery Cigar), Battery
CGW (Central Gateway ECU),
X3 16 CGW (Central Gateway ECU), Ground —
Ground
X3 17 Amplifie Power, Ground Not Connected —
CGW (Central Gateway ECU),
X3 18 CGW (Central Gateway ECU), Battery —
Battery
X3 19 Radio, Ground Radio, Ground —
Antitheft Warning System,
X3 20 Not Connected —
Ground
X3 21 Utility Light, Ground Utility Light, Ground —
Power Feed Spare Output I,
X4 1 Power Feed Spare Output I, Battery —
Battery
Power Feed Spare Output III,
X4 2 Not Connected —
Battery
Power Feed Spare Output I,
X4 3 Power Feed Spare Output I, Ground —
Ground
Power Feed Spare Output III,
X4 4 Not Connected —
Ground
Power Feed Spare Output II,
X5 1 Power Feed Spare Output II, Battery —
Battery
Power Feed Spare Output IV,
X5 2 Not Connected —
Battery
Power Feed Spare Output II,
X5 3 Power Feed Spare Output II, Ground —
Ground
Power Feed Spare Output IV,
X5 4 Not Connected —
Ground
X6 1 CB Radio, Ground CB Radio, Ground —
Fleet Management System,
X6 2 Fleet Management System, Battery —
Battery
X6 3 CB Radio, Battery CB Radio, Battery —
X6 4 Instrument Cluster, Ground Instrument Cluster, Ground —
Power Feed Driver Information
X6 5 Not Connected —
System, Ignition
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
Fleet Management System,
X6 6 Fleet Management System, Ignition —
Ignition
Fleet Management System,
X6 7 Fleet Management System, Ground —
Ground
Power Feed Gauge Pyrometer,
X6 8 Not Connected —
Ignition
12V Power Receptacle 2 (Dash, 12V Power Receptacle 2 (Dash, Phone),
X6 9 —
Phone), Battery Battery
Power Feed Gauge Axle Power Feed Gauge Axle Temperature,
X6 10 —
Temperature, Ignition Ignition
Power Feed Gauge Engine Oil Power Feed Gauge Engine Oil
X6 11 —
Temperature, Ignition Temperature, Ignition
X6 12 Power Feed Clock Cab, Battery Power Feed Clock Cab, Battery —
Power Feed Driver Information
X6 13 Not Connected —
System, Battery
Power Feed Clock Sleeper,
X6 14 Power Feed Clock Sleeper, Battery —
Battery
12V Power Receptacle 1 (Dash, 12V Power Receptacle 1 (Dash, Cigar),
X6 15 —
Cigar), Battery Battery
X6 16 Instrument Cluster, Ignition Instrument Cluster, Ignition —
X6 17 Not Connected Not Connected —
X6 18 Instrument Cluster, Battery Instrument Cluster, Battery —
Sleeper HVAC Fan Motor,
X7 1 Sleeper HVAC Fan Motor, Ground —
Ground
X7 2 Cabin HVAC Fan Motor, Ground Cabin HVAC Fan Motor, Ground —
X7 3 Sleeper HVAC Fan Motor, Battery Sleeper HVAC Fan Motor, Battery —
X7 4 Cabin HVAC Fan Motor, Battery Cabin HVAC Fan Motor, Battery —
Door Open Driver Side Input Pull
X8 1 Door Open Driver Side Input Pull Down —
Down
X8 2 Mirror Heating Driver, Ground Mirror Heating Driver, Ground —
X8 3 Door Control Driver, Ground Door Control Driver, Ground —
X8 4 Door Control Driver, Battery Door Control Driver, Battery —
X8 5 Door Open Status ICU Input Door Open Status ICU Input —
X8 6 Door Lock, Battery Door Lock, Battery —
Power Window Driver Side,
X8 7 Power Window Driver Side, Accessory —
Accessory
X8 8 Mirror Heating Driver Mirror Heating Driver —
X8 9 Door Sill Lamp Driver Door Sill Lamp Driver —
Body Builder Connector:
X9 1 Not Connected —
Revolution
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
Body Builder Connector: Vehicle
X9 2 Not Connected —
Speed
X9 3 Function Pin 1 Function Pin 1 —
Body Builder Connector: Park
X9 4 Not Connected —
Brake
X9 5 Function Pin 2 Function Pin 2 —
X9 6 Function Pin 4 Function Pin 4 —
X9 7 Function Pin 3 Function Pin 3 —
Body Builder Connector: Ground
X9 8 Not Connected —
1 (GND1)
Body Builder Connector: Backup
X9 9 Not Connected —
Lamp
Body Builder Connector: Marker
X9 10 Not Connected —
Lights
X9 11 Body Builder Connector: Ignition Not Connected —
Body Builder Connector: Tail
X9 12 Not Connected —
Lights
Body Builder Connector: Right
X9 13 Not Connected —
Turn
Body Builder Connector: Left
X9 14 Not Connected —
Turn
Body Builder Connector: Stop
X9 15 Not Connected —
Lights
X10 1 Tire Pressure Monitoring, Ignition Not Connected —
Inside Temperature Sensor, Inside Temperature Sensor, Propeller
X10 2 —
Propeller Control, Accessory Control, Accessory
X10 3 Belt Buckle Contact Signal Not Connected —
X10 4 Panel Lamps, Ground Panel Lamps, Ground —
X10 5 Tire Pressure Monitoring, Ground Not Connected —
Vehicle Power Shut Down Signal Vehicle Power Shut Down Signal
X10 6 —
(Optimized Idle) (Optimized Idle)
Service Brake Pressure Switch,
X10 7 Service Brake Pressure Switch, Supply —
Supply
Power Feed Sleeper Thermostat Power Feed Sleeper Thermostat
X10 8 —
(Optimized Idle), Ground (Optimized Idle), Ground
Inside Temperature Sensor,
X10 9 Inside Temperature Sensor, Feedback —
Feedback
Power Feed Sleeper Thermostat Power Feed Sleeper Thermostat
X10 10 —
(Optimized Idle), Ignition (Optimized Idle), Ignition
Inside Temperature Sensor/ Inside Temperature Sensor/Propeller,
X10 11 —
Propeller, Ground Ground
X10 12 Not Connected Not Connected —
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
X10 13 Panel Lamps Panel Lamps —
Inside Temperature Sensor,
X10 14 Inside Temperature Sensor, Ground —
Ground
X10 15 Belt Buckle Contacts, Ground Not Connected —
X10 16 Tire Pressure Monitoring, Battery Not Connected —
X10 17 Instrument Cluster, HL Wake Up Instrument Cluster, HL Wake Up —
X10 18 Radio, Accessory Radio, Accessory —
Differential Lock ICU Indicator,
X11 1 Not Connected —
RA2
X11 2 Washer Level ICU Indicator Washer Level ICU Indicator —
Electrical Global Fault Indicator Electrical Global Fault Indicator (Future
X11 3 —
(Future Use) Use)
Fuel Water Separator ICU
X11 4 Not Connected —
Indicator
Differential Lock ICU Indicator,
X11 5 Differential Lock ICU Indicator, RA1 —
RA1
Low Air Pressure Switch ICU
X11 6 Low Air Pressure Switch ICU Indicator —
Indicator
X11 7 Lights On Buzzer Lights On Buzzer —
X11 8 Air Filter Restriction ICU Indicator Air Filter Restriction ICU Indicator —
X11 9 High Beam ICU Indicator High Beam ICU Indicator —
X11 10 Rain / Light Sensor, Ground Not Connected —
X11 11 Turn Signal Left ICU Indicator Turn Signal Left ICU Indicator —
Alternator No Charge ICU
X11 12 Alternator No Charge ICU Indicator —
Indicator
X11 13 Turn Signal Right ICU Indicator Turn Signal Right ICU Indicator —
X11 14 Park Brake Switch ICU Indicator Park Brake Switch ICU Indicator —
X11 15 Rain / Light Sensor, LIN Not Connected —
X11 16 Clutch Switch Return, Ground Clutch Switch Return, Ground —
Top of Clutch (Cruise Control
X11 17 Top of Clutch (Cruise Control Disable) —
Disable)
X11 18 Auxiliary Telematic Unit, Ground Not Connected —
X11 19 Auxiliary Telematic Unit, Battery Not Connected —
X11 20 Bottom of Clutch (Starter Control) Bottom of Clutch (Starter Control) —
X11 21 Rain / Light Sensor, Battery Not Connected —
Rear Baggage Compartment Rear Baggage Compartment Light
X12 1 —
Light Switch Center Switch Center
Rear Baggage Compartment Rear Baggage Compartment Light
X12 2 —
Light Switch Left Switch Left
X12 3 Footwell Light Footwell Light —
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
X12 4 Dome Lamps Sleeper, Ground Dome Lamps Sleeper, Ground —
Rear Baggage Compartment Rear Baggage Compartment Light
X12 5 —
Light Switch Right Switch Right
Reading Lamp 1 (Dimmable /
X12 6 Reading Lamp 1 (Dimmable / Theater) —
Theater)
X12 7 Not Connected Not Connected —
Reading Lamps 1 & 2 (Dimmable Reading Lamps 1 & 2 (Dimmable /
X12 8 —
/ Theater), Ground Theater), Ground
X12 9 General Sleeper Lamp General Sleeper Lamp —
X12 10 Footwell Light, Ground Footwell Light, Ground —
X12 11 General Sleeper Lamp, Ground General Sleeper Lamp, Ground —
Rear Baggage Compartment
X12 12 Rear Baggage Compartment Lights —
Lights
X12 13 Not Connected Not Connected —
Rear Baggage Compartment Rear Baggage Compartment Lights,
X12 14 —
Lights, Ground Ground
X12 15 Turn Left Front Side Turn Left Front Side —
Reading Lamp 2 (Dimmable /
X12 16 Reading Lamp 2 (Dimmable / Theater) —
Theater)
X12 17 Dome Lamp, Rear Dome Lamp, Rear —
X12 18 Turn Right Front Side Turn Right Front Side —
X13 1 Not Connected Not Connected —
X13 2 SAM Cab, Cabin CAN Low (-) SAM Cab, Cabin CAN Low (-) —
X13 3 SAM Cab, Cabin CAN High (+) SAM Cab, Cabin CAN High (+) —
X13 4 Ignition Switch - Off Not Connected —
X13 5 Ignition Switch - Accessory Ignition Switch - Accessory —
X13 6 Ignition Switch - On (Ignition) Ignition Switch - On (Ignition) —
X13 7 Ignition Switch - Battery Ignition Switch - Battery —
X13 8 Park Brake Switch Feedback Park Brake Switch Feedback —
X13 9 Park Brake Switch Supply Park Brake Switch Supply —
Low Air Pressure Switch
X13 10 Low Air Pressure Switch Feedback —
Feedback
X13 11 Low Air Pressure Switch Supply Low Air Pressure Switch Supply —
Service Brake Pressure Switch Service Brake Pressure Switch
X13 12 —
Feedback Feedback
Horn Switch uC (microcontroller)
X13 13 Horn Switch uC (microcontroller) Bypass —
Bypass
X13 14 Start Enable - Crank Interlock Not Connected —
X13 15 Ignition Switch - Crank Ignition Switch - Crank —
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
12V Power Receptacle 5 12V Power Receptacle 5 (Sleeper,
X14 1 —
(Sleeper, Cigar), Battery Cigar), Battery
12V Power Receptacle 6 12V Power Receptacle 6 (Sleeper,
X14 2 —
(Sleeper, Refrigerator), Battery Refrigerator), Battery
12V Power Receptacles 3 & 4,
X14 3 12V Power Receptacles 3 & 4, Ground —
Ground
12V Power Receptacles 5 & 6,
X14 4 12V Power Receptacles 5 & 6, Ground —
Ground
Power Feed Spare Output V,
X15 1 Not Connected —
Battery
Power Feed Spare Output VI,
X15 2 Not Connected —
Battery
Power Feed Spare Output V,
X15 3 Not Connected —
Ground
12V Power Receptacles 1 & 2,
X15 4 12V Power Receptacles 1 & 2, Ground —
Ground
X16 1 CD Player, Battery Not Connected —
X16 2 Lane Guidance, Ignition Not Connected —
X16 3 Lane Guidance, Ground Not Connected —
X16 4 Clearance Lamps Front II Clearance Lamps Front II —
Auxiliary Circulation Fan -
X16 5 Not Connected —
Windshield, Accessory
X16 6 CD Player, Ground Not Connected —
X16 7 Dome Lamp Cab, Battery Dome Lamp Cab, Battery —
X16 8 Clearance Lamps Front I Clearance Lamps Front I —
X16 9 Clearance Lamps Front, Ground Clearance Lamps Front, Ground —
X16 10 Not Connected Not Connected —
Dome Lamp, Driver / Forward
X16 11 Dome Lamp, Driver / Forward Overhead —
Overhead
X16 12 Reading Lamps 3 & 4, Ground Reading Lamps 3 & 4, Ground —
X16 13 Reading Lamp 4, Battery Reading Lamp 4, Battery —
X16 14 Dome Lamp, Passenger Dome Lamp, Passenger —
X16 15 Dome Lamps, Forward, Ground Dome Lamps, Forward, Ground —
X16 16 Spot Light Spot Light —
Overhead Compartment Lights,
X16 17 Overhead Compartment Lights, Battery —
Battery
Auxiliary Circulation Fan -
X16 18 Not Connected —
Windshield, Ground
Power Window Passenger Side, Power Window Passenger Side,
X17 1 —
Accessory Accessory
X17 2 Mirror Heating Passenger Mirror Heating Passenger —
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
X17 3 Door Sill Lamp Passenger Door Sill Lamp Passenger —
X17 4 Door Control Passenger, Battery Door Control Passenger, Battery —
Door Open Passenger Side,
X17 5 Door Open Passenger Side, Input —
Input
Keyless Go / Keyless Entry,
X17 6 Not Connected —
Ground
Keyless Go / Keyless Entry,
X17 7 Not Connected —
Battery
Mirror Heating Passenger,
X17 8 Mirror Heating Passenger, Ground —
Ground
X17 9 Door Control Passenger, Ground Door Control Passenger, Ground —
Marker Lamps, Front Left,
X18 1 Marker Lamps, Front Left, Ground —
Ground
Headlamp, Turn Lamp Corner Headlamp, Turn Lamp Corner Right,
X18 2 —
Right, Ground Ground
X18 3 Horn (Electric), Ground Horn (Electric), Ground —
Marker Lamps, Corner Front Marker Lamps, Corner Front Right,
X18 4 —
Right, Ground Ground
X18 5 Low Beam, Left Low Beam, Left —
X18 6 High Beam, Left High Beam, Left —
Headlamp, Turn Lamp Corner Headlamp, Turn Lamp Corner Left,
X18 7 —
Left, Ground Ground
Marker Lamps, Corner Front
X18 8 Marker Lamps, Corner Front Right —
Right
X18 9 Turn Right Front Corner Turn Right Front Corner —
Marker Lamps, Front Right,
X18 10 Marker Lights, Front Right, Ground —
Ground
Hood Tilt Switch Signal
X18 11 Hood Tilt Switch Signal (Optimized Idle) —
(Optimized Idle)
X18 12 Marker Lamps, Front Right Marker Lamps, Front Right —
Marker Lamps, Corner Front Marker Lamps, Corner Front Left,
X18 13 —
Left, Ground Ground
X18 14 Marker Lamps, Front Left Marker Lamps, Front Left —
DRL (Daytime Running Lights),
X18 15 DRL (Daytime Running Lights), Right —
Right
X18 16 Marker Lamps, Corner Front Left Marker Lamps, Corner Front Left —
X18 17 High Beam, Right High Beam, Right —
DRL (Daytime Running Lights),
X18 18 DRL (Daytime Running Lights), Left —
Left
X18 19 Turn Left Front Corner Turn Left Front Corner —
X18 20 Low Beam, Right Low Beam, Right —
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
X18 21 Horn (Electric), Control Horn (Electric), Control —
X19 1 Activate PTO Solenoid, Ground Not Connected —
X19 2 Starter Relay, Ground Starter Relay, Ground —
X19 3 Starter Relay Starter Relay —
X19 4 Not Connected Not Connected —
X19 5 Not Connected Not Connected —
X19 6 A/C Compressor Clutch A/C Compressor Clutch —
X19 7 Not Connected Not Connected —
X19 8 Not Connected Not Connected —
X19 9 Activate PTO Solenoid, Control Not Connected —
HVAC Pressure Transducer,
X19 10 HVAC Pressure Transducer, Feedback —
Feedback
Air Intake Warmer / Grid Heater,
X19 11 Not Connected —
Ignition
HVAC Pressure Transducer,
X19 12 HVAC Pressure Transducer, Return —
Return
Air Filter Restriction Sensor,
X19 13 Air Filter Restriction Sensor, Ignition —
Ignition
X19 14 Hood Tilt Switch Signal Supply Hood Tilt Switch Signal Supply —
Air Filter Restriction Sensor,
X19 15 Air Filter Restriction Sensor, Signal —
Signal
Hood Tilt & Neutral & Park Brake Hood Tilt & Neutral & Park Brake
X19 16 —
(Optimized Idle) (Optimized Idle)
HVAC Pressure Transducer, HVAC Pressure Transducer, Supply
X19 17 —
Supply (+5V) (+5V)
X19 18 Engine ECU, Ignition Engine ECU, Ignition —
X19 19 PTO Response (Feedback) Not Connected —
X19 20 Ether Start Power, Ignition Ether Start Power, Ignition —
X19 21 PTO Solenoid Activated Not Connected —
X20 1 Fog Lamp, Front Right, Ground Fog Lamp, Front Right, Ground —
Distance Sensor (Adaptive
X20 2 Not Connected —
Cruise Control), Ground
X20 3 Fog Lamp, Front Left, Ground Fog Lamp, Front Left, Ground —
High / Low Beam Auxiliary Right, High / Low Beam Auxiliary Right,
X20 4 —
Ground Ground
High / Low Beam Auxiliary Left,
X20 5 High / Low Beam Auxiliary Left, Ground —
Ground
X20 6 Not Connected Not Connected —
X20 7 Washer Pump, Ground Washer Pump, Ground —
X20 8 Fog Lamp, Front Left Fog Lamp, Front Left —
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
X20 9 Not Connected Not Connected —
X20 10 High Beam Auxiliary, Left Not Connected —
X20 11 Low Beam Auxiliary, Left Low Beam Auxiliary, Left —
X20 12 High Beam Auxiliary, Right Not Connected —
Temperature Sensor Outside Air Temperature Sensor Outside Air Gauge,
X20 13 —
Gauge, Ignition Ignition
X20 14 Low Beam Auxiliary, Right Low Beam Auxiliary, Right —
X20 15 Turn Right Front Side Turn Right Front Side —
Temperature Sensor Outside Air, Temperature Sensor Outside Air,
X20 16 —
Feedback Feedback
X20 17 Fog Lamp, Front Right Fog Lamp, Front Right —
Temperature Sensor Outside Air,
X20 18 Temperature Sensor Outside Air, Ground —
Ground
Distance Sensor (Adaptive
X20 19 Not Connected —
Cruise Control), Battery
X20 20 Washer Pump, Control Washer Pump, Control —
X20 21 Washer Fluid Level, Feedback Washer Fluid Level, Feedback —
X21 1 Horn (Pneumatic), Ground Not Connected —
X21 2 Not Connected Not Connected —
X21 3 Wiper, Ground Wiper, Ground —
X21 4 Not Connected Not Connected —
X21 5 Utility Light, Ground Utility Light, Ground —
X21 6 LVD Sense, Ground LVD Sense, Ground —
X21 7 Not Connected Not Connected —
X21 8 Alternator Charging, Feedback Alternator Charging, Feedback —
X21 9 Wiper Parked Wiper Parked —
X21 10 Horn (Pneumatic), Control Not Connected —
X21 11 Turn Left Front Side Turn Left Front Side —
X21 12 Wiper Low Wiper Low —
LVD Sense, Battery / Emergency
X21 13 LVD Sense, Battery / Emergency Supply —
Supply
X21 14 Utility Light Utility Light —
X21 15 Wiper High Wiper High —
Table 2, Pinout Mapping
Fuse Mapping
Fuse Fuse Name Rating Connection Pin Function
Area Lighting BAT (Lwr Bunk and
F21 AREA LIGHT 15 X2 15
Sleeper Work Surface)
Instrument Cluster / Horn switch
F22 ICU-BAT 5 X6 18
supply, BAT
X3 10 GPS, IGN
Power Feed Driver Information
X6 5
System, IGN
X6 6 Fleet Management System, IGN
F23 DR INFO/GAUGE 15 Power Feed Gauge Pyrometer,
X6 8
IGN
Power Feed Gauge Axle Temp,
X6 10
IGN
Power Feed Gauge Engine Oil
X6 11
Temp, IGN
X2 9 Diagnostic Connector, IGN
F24 ICU-IGN 10
X6 16 Instrument Cluster, IGN
X1 1 Trans Temp Gauge, IGN
F25 DASH SPLICE PAK 7.5 X1 4 Dash Splice, IGN
X2 14 Collision Avoidance System, IGN
F26 SRS-AIRBACK 5 X3 6 SRS Airbag, IGN
F27 MIRROR HEAT L 10 X8 8 Mirror Heat, Driver
F28 MIRROR HEAT R 10 X17 2 Mirror Heat, Passenger
F29 SAM RELAY COILS 3 N/A N/A Internal Relay Coil Supply
12V Pwr Recept 6 BAT (Sleeper,
F30 PWR RCPT 6/FRIG 20 X14 2
Refrigerator)
12V Power Receptacle 5 BAT
F31 SLPR PWR RCPT 5 20 X14 1
(Sleeper, Cigar)
X15 1 Power feed spare output V, BAT
F32 PWR FD SPARE 5&6 25
X15 2 Power feed spare output VI, BAT
F33 SPOT LIGHT 20 X16 16 Spot Light
Overhead Compartment Light,
F34 BAG COMP LIGHT 3 X16 17
BAT
F35 DOMELAMP CAB 15 X16 7 Dome Lamp Cab, BAT
Auxiliary Circulation Fan (Sleeper)
AUX CIR FAN/RD X1 13
F36 15 BAT
LAMP
X16 13 Reading Lamp 4 BAT
Fuse Mapping
Fuse Fuse Name Rating Connection Pin Function
X6 12 Power Feed Clock Cab, BAT
Power Feed Driver Information
X6 13
System, BAT
CLK/DRV INFO/CD/ Power Feed Clock sleeper, BAT -
F37 15 X6 14
KEYLESS
X6/14
X16 1 CD-Player, BAT
X17 7 Keyless Go /Keyless Entry, BAT
F38 DR CTRL R 20 X17 4 Door control passenger, BAT
Power Window Passenger Side,
F39 PWR WINDOW R 15 X17 1
ACC
F40 PWR WINDOW L 15 X8 7 Power Window Driver Side, ACC
Table 3, Fuse Mapping
Relay Mapping
Relay Coil Relay
(low current side) (high current side)
Relay Relay Name Conn. Pin Circuits Supplied
Control (-) Control (+) Common Suppl.
Type
(86) (85) (30) Pwr To
X3 10 GPS, IGN
Power Feed Driver
5 Information System,
IGN
Fleet Management
DRV 6
F29 (batt System, IGN
R7 INFOGAUGE, SAM Micro Batt NO F23
power) X6 Power Feed Gauge
IGN 8
Pyrometer, IGN
Power Feed Gauge
10
Axle Temp, IGN
Power Feed Gauge
11
Engine Oil Temp, IGN
Diagnostics Connector,
X2 9
IGN
F24
Instrument Cluster,
X6 16
IGN
ICU/ Transmission Temp
F29 (batt X1 1
R8 VEHICLE SAM Micro Batt NO Gauge, IGN
power)
SYS, IGN
F25 X1 4 Dash Splice, IGN
Collision Avoidance
X2 14
System, IGN
F26 X3 6 SRS Airbag, IGN
AMPLIFIER F29 (batt
R9 SAM Micro Batt NO F9 X3 9 Amplifie Power, ACC
PWR, ACC power)
MIRROR F29 (batt F27 X8 8 Mirror Heat, Driver
R10 SAM Micro Batt NO
HEAT power) F28 X17 2 Mirror Heat, Passenger
12V Power Receptacle
PWR RCPT F29 (batt
R11 SAM Micro Batt NC F30 X14 2 6 BAT (Sleeper,
6/FRIG, BAT power)
Refrigerator)
PWR RCPT F29 (batt 12V Power Receptacle
R12 SAM Micro Batt NC F31 X14 1
5, BAT power) 5 BAT (Sleeper, Cigar)
Area Lighting BAT
F21 X2 15 (Lower Bunk Area and
CAB Sleeper Work Surface)
F29 (batt Overhead
R13 LIGHTING, SAM Micro Batt NC
power) F34 X16 17 Compartment Light,
BAT
BAT
F35 X16 7 Dome Lamp Cab, BAT
Relay Mapping
Relay Coil Relay
(low current side) (high current side)
Relay Relay Name Conn. Pin Circuits Supplied
Control (-) Control (+) Common Suppl.
Type
(86) (85) (30) Pwr To
12V Power Receptacle
F17 X3 3
PWR RCPT4/ 4 BAT (Sleeper, Cigar)
F29 (batt Auxiliary Circulation
R14 CIR FAN/ SAM Micro Batt NC X1 13
power)
LAMP, BAT F36 Fan, Sleeper, BAT
X16 13 Reading Lamp 4, BAT
Power Window
PWR F39 X17 1
F29 (batt Passenger Side, ACC
R15 WINDOW, SAM Micro Batt NO
power) Power window Driver
ACC F40 X8 7
Side, ACC
Table 4, Relay Mapping
07/02/2007
12V From
Megafuse
SAM Cab
12V Power Receptacles 3&4, GND ! X14/3 X19/1 −Activate PTO Solenoid GND
12V Power Receptacles 5&6, GND ! X14/4 X19/2 −Starter Relay, GND
X19/12 −HVAC Pressure Tranducer, Return
Power Feed Spare Output V, GND ! X15/3
12V Power Receptacles 1&2, GND ! X15/4 X20/1 −Fog Lamp, Front Right GND
X20/2 −Distance Sensor (Adaptive Cruise Control), GND
Lane Guidance, GND ! X16/3 X20/3 −Fog Lamp, Front Left GND
f545099
G02.04
G02.04/51
Battery
GND To
Megafuse
12V From
02/25/2010
G02.04/52
X2/1 −Auxiliary heater [ESPAR] power
*Cabin HVAC controller, BAT −X1/3 F2 (15A)
*S leeper HVAC controller, BAT −X1/6
X3/7 −Utility Light
Transmission shift control panel, BAT −X1/9
F4 (15A) X8/5 −Door Open Status
MSF, BAT −X2/12 X8/9 −Door Sill Lamp Driver
G02.04
* When specified with Optimized Idle, these pins will not supply power when the key is in the ACC position,
Pwr feed Sleeper thermostat (opt idle) IGN −X10/10 X18/9 −Turn Right Front Corner
nor during an Optimized Idle vehicle shutdown event. Optimized Idle is specified by a SAM Cab parameter.
Radio, ACC −X10/18 X18/12 −Marker Lamp, Front Right
Ignition Switch, BAT −X13/7 X18/16 −Marker Lamp, Corner Front Left
Park Brake Switch, BAT−X13/9 X18/17 −High Beam, Right
Low Air Pressure Switch IGN −X13/11 X18/18 −DRL (Daytime Running Light), Left
X18/19 −Turn Left Front Corner
Lane Guidance, IGN −X16/2 X18/20 −Low Beam, Right
*Auxiliary Circulation Fan −Windshield, ACC −X16/5 X18/21 −Horn (Electric), Control
Air Intake Warmer/Grid Heater, IGN −X19/11 X19/3 −Starter Relay
Air Filter Restriction Sensor, IGN −X19/13 X19/6 −A/C Compressor Clutch
Engine ECU, IGN −X19/18 X19/9 −Activate PTO Solenoid (Control)
Ether Start Power, IGN −X19/20 X19/14 −Hood Tilt Switch Signal Supply
Temperature Sensor Outside/Air Gauge, IGN −X20/13 X19/16 −Hood Tilt & Neutral & Park Brake (opt idle)
X19/17 −HVAC Pressure Tranducer, Supply (+5v)
f545100
GND to
SAM Cab
F29 (3A)
F1 (30A)
87a
85
86
X4/1 −Power Feed Spare Output I, BAT
30
X4/2 −Power Feed Spare Output III, BAT
87
F9 (20A)
R9
Amplifier Power, ACC −X3/9
87
87a
R1
30
85
86
F27 (10A) F3 (30)
85
86
*Mirror Heat, Driver −X8/8
30
X5/1 −Power Feed Spare Output II, BAT
X5/2 −Power Feed Spare Output IV, BAT
87
F28 (10A)
706 — Relayed Outputs
87
R10
87a
R2
30
85
86
85
86
30
87a
F19 (20A)
87
X1/12 −Heated Seats, IGN*
87
R11
R3
86
F30 (20A)
30
85
12V Pwr Recept 6 BAT (Sleeper, Refrigerator) −X14/2
87a
F6 (15A)
85
86
87a
30
X6/15 −12V Pwr Receptacle 1 BAT (Dash, Cigar)
87
87
R12
R4
F7 (15A)
F31 (20A) X6/9 −12V Pwr Receptacle 2 BAT (Dash, Phone)
30
85
86
12V Power Receptacle 5 BAT (Sleeper, Cigar) −X14/1
87a
F14 (25A)
87a
85
86
F21 (15A) 30
87
Overhead Compartment Light, BAT −X16/17
BOARD
R13
R5
F35 (15A)
30
85
86
* When specified with Optimized Idle, these pins will not supply power when the key is in the ACC position,
Dome Lamp Cab, BAT −X16/7
87a
nor during an Optimized Idle vehicle shutdown event. Optimized Idle is specified by a SAM Cab parameter.
INTERNAL SAM PC F15 (20A)
85
86
87a
30
87
87
R14
R6
30
Auxiliary Circulation Fan (Sleeper) BAT −X1/13
85
86
87a
Reading Lamp 4 BAT −X16/13
F39 (15A)
85
86
F40 (15A) F23 (15A) X6/5 −Power Feed Driver Information System, IGN
87
X6/6 −Fleet Management System, IGN
87
R7
SAM
R8
86
INTERNAL
F26 (5A)
X3/6 −SRS Airbag, IGN
f545102
G02.04
G02.04/53
G02.04 SAM Cab
09/18/2007 f545127
1. Determine if the template has I/O controls available for the affected function.
Open the Datalink Monitor template for the function or output that is not functioning.
Are I/O control buttons available for the affected function?
YES! Go to test 2.
NO ! Go to test 5.
2. Use the I/O control feature in Datalink Monitor to test the output circuit.
Does the function or output work when activated with Datalink Monitor?
YES! Go to test 3.
NO ! Go to test 4.
3. Use Datalink Monitor to determine if input conditions are met for the function or output to operate.
Are all of the input conditions met?
YES ! Check SAM Cab programming and parameters. For additional programming/parameter information
specifi to this function, refer to the applicable subject in this manual. If programming/parameters are OK,
replace the SAM Cab.
NO ! For additional input troubleshooting specifi to this function, refer to the applicable subject in this
manual.
4. Rule out the output by manually applying fused power and ground.
Does the function or output work when power and ground are applied manually?
YES! Replace the SAM Cab.
NO ! The problem is in the output power or ground circuits, or the load itself. For additional output trou-
bleshooting, refer to the applicable subject in this manual.
5. Determine if input conditions are met for the function or output to operate using Datalink Monitor.
NOTE: To determine which Datalink Monitor template to use, refer to the applicable subject in this
manual.
5.1 Refer to the function or output in this manual to identify what input conditions have to be met in or-
der for the function or output to operate.
5.2 Open the Datalink Monitor template for the applicable function.
5.3 While monitoring the template inputs, attempt to activate the function or output using the normal
method. Turn on the headlights, for example, if the rotary switch inputs are being tested.
Are all of the input conditions met?
YES! Go to test 6.
NO ! For additional input troubleshooting specifi to this function, refer to the applicable subject in this
manual.
6. Check available voltage at the consumer.
NOTE: Available voltage tests cannot be performed on every SAM Cab function. For example,
checking voltage at a turn signal connector will not work. Refer to the applicable subject in this
manual for more details about troubleshooting specifi outputs. If test 6 cannot be performed, pro-
ceed to test 7.
6.1 Disconnect the connector at the consumer.
6.2 Activate the function by normal means. Turn on the headlights, for example, if the rotary switch in-
puts are being tested.
6.3 Measure voltage between the positive and ground pins on the connector for the function being tested.
Is there battery voltage across the positive and ground terminals?
YES! Replace the consumer.
NO ! Go to test 7.
7. Rule out the output by manually applying fused power and ground.
7.1 Disconnect the SAM connector(s) containing the circuits for the output (power) and ground for the
function being tested.
7.2 Apply fused power to the output circuit using jumper wires, and apply ground to the ground circuit.
Does the function or output work when power and ground are applied manually?
YES !Check SAM Cab programming and parameters. For additional programming and parameter infor-
mation, refer to the applicable subject in this manual. If the programming and parameters are OK, replace
the SAM Cab.
NO !The problem is in the output power or ground circuits, or the load itself. For additional output trou-
bleshooting, refer to the applicable subject in this manual.
SAM Cab
Internal Sam
INPUTS Circuit Board
Relay Fuse OUTPUT
09/18/2007 f545126
1. Determine if the template has I/O controls available for the affected function.
Open the Datalink Monitor template for the function or output that is not functioning.
Are I/O control buttons available for the affected function?
YES! Go to test 2.
NO ! Go to test 3.
2. Use Datalink Monitor to determine if the output circuit can be eliminated as the problem.
NOTE: To determine which Datalink Monitor template to use, refer to the applicable subject in this
manual.
2.1 Open the Datalink Monitor template for the applicable function.
2.2 Using the template, attempt to activate the function or output.
Does the function or output work when activated manually in Datalink Monitor?
NOTE: For normally closed relays, activating the SAM output will turn off the relay controls. For normally
open relays, activating the SAM output will turn on the relay controls.
YES! Go to test 3.
NO ! Go to test 4.
3. Use Datalink Monitor to determine if input conditions are met for the function or output to operate.
NOTE: To determine which Datalink Monitor template to use, refer to the applicable subject in this
manual.
3.1 Refer to the applicable function or output, and identify what input conditions have to be met for nor-
mal operation.
3.2 Open the applicable Datalink Monitor template.
3.3 While monitoring the template inputs, attempt to active the function or output using the normal
method. For example, turn on the headlights if the rotary switch inputs are being tested.
Are all of the input conditions met?
YES! Go to test 4.
NO ! For additional input troubleshooting specifi to this function, refer to the applicable subject in this
manual.
4. Check the available voltage at the consumer.
NOTE: Available voltage tests cannot be performed on every SAM function. For example, checking
voltage at a turn signal connector will not work. Refer to the applicable subject for more informa-
tion about troubleshooting the specifi outputs. If test 4 cannot be performed, proceed to test 5.
4.1 Disconnect the connector at the consumer.
4.2 Activate the function by normal means. For example, turn on the headlights if the rotary switch in-
puts are being tested.
4.3 Measure voltage between the positive and ground pins.
Is there battery voltage across the positive and ground terminals?
YES! Replace the consumer.
NO ! Go to test 5.
5. Check for power at the relay coil (low current side).
5.1 Remove the relay from the SAM for the function that is not working.
5.2 Check for voltage in the SAM relay cavity that corresponds to terminal 85 of the relay.
Is there voltage at relay cavity 85?
YES! Go to test 6.
NO ! Check fuse F29 on the SAM Cab.
6. Check for power at the relay common (high current side).
Check for voltage in the SAM relay cavity that corresponds to terminal 30 of the relay.
Is there voltage at relay cavity 30?
YES! Go to test 7.
NO ! Check main power to SAM from the MEGA fuse.
7. Check the SAM fuse for the function.
Check the fuse for the function or output.
Is the fuse good?
YES ! Go to test 8.
NO !Check for a short to ground in the output circuit. Check the component that the output supplies
power to for excessive current draw. Make repairs as necessary, and replace the fuse.
8. Determine if the function works when power is manually applied.
Using a fused jumper, apply power to the SAM relay cavity that corresponds to 87 for normally open relay
connections, or 87a for normally closed relays.
Does the function work when power is manually applied at the relay?
YES! Go to test 9.
NO ! The problem is in the output power or ground circuits, or the load itself. For additional output trou-
bleshooting, refer to the applicable subject in this manual.
9. Determine if the output works with a test relay that is operating properly.
Remove the relay from the SAM and install the known good relay.
Does the function or output work with a known good relay?
YES! Replace the relay.
NO ! Check SAM programming and parameters. For additional programming/parameter information, refer
to the applicable subject in this manual. If programming and parameters are OK, replace the SAM.
09/19/2007 f545125a
BATT
SAM Cab
Fuse OUTPUT
09/19/2007 f545128a
• Nominal Current (amps): The expected current under normal operating conditions.
• Maximum Continuous Current (amps): The maximum current without shutting the pin off at 77 F (25 C).
• Maximum Current (amps): When exceeded the pin will shut off at 185 F (85 C).
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Fuses and Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
Datalink Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Diagnostic CAN Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Functional Messaging and ECU Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
ECU Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
Datalink Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Pinout Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602
Fuse Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603
Relay Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604
Troubleshooting
Troubleshooting Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Possible Causes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703
Fused and Relayed Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704
Unfused Outputs, Grounded Pins, and Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 705
Logic Controlled Unfused Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 706
Logic Controlled Relayed Fused Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 707
Unfused Constant Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 708
Fused Battery Pass-Through Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 709
The SAM Chassis has parameters that can be viewed or changed for vehicle configuration.
The SAM Chassis software can be flashed using ServiceLink, which will flash to its same version or upgrade, if
required.
The software flashing procedure should only be performed on the SAM Chassis in the following cases:
• As a last resort: Troubleshooting has narrowed the problem down to being at the SAM Chassis itself and
no other mechanical or electrical causes for the symptom have been identified. As a last resort, flashing
the SAM Chassis software with the same version may help in the case it became corrupt during the
course of normal vehicle operation.
• For a feature upgrade: Adding a new feature to a vehicle may require a newer version of ECU software.
ServiceLink will automatically make available any necessary software upgrades.
• Fixing a problem in the existing software: In case a new version of ECU software is needed to fix a
problem in the existing ECU software, ServiceLink will automatically make available any necessary soft-
ware upgrades.
• Replacing the SAM Chassis: Flashing ensures that the most recent software is on the installed ECU.
For instructions on how to use ServiceLink to flash the software of a CAN ECU like the SAM Chassis, refer to
the ServiceLink User Guide or ServiceLink Help user documentation, available in ServiceLink’s "Help" menu.
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps) Engine Control
Module
SAM Chassis
Pneumatic ABS
Module
Modular Switch
Field (Master)
Transmission
Control Module
Sub Bus
HVAC Control
Stalk Switch Switches Front
Head Lamp
(Steering
Switch
Column)
HVAC Control
Switches Rear
Standard
Radio
Optional
VORAD
Engine Display
Qualcomm
07/02/2007 f040753
2 3
6
07/18/2007 f544916
01/25/2007 f544954
D
E
C
F A B
J
G
H
05/01/2006 f151036b
Diagnostic Connector
Pin Function
A Battery (–)
B Battery (+)
C J1939 CAN High (+)
D J1939 CAN Low (–)
E CAN Shield (ground)
F J1708/J1587 (+)
G J1708/J1587 (–)
H Diagnostic CAN High (+)
J Diagnostic CAN Low (–)
Table 1, Diagnostic Connector
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
SAM Chassis, Cabin CAN SAM Chassis, Cabin CAN SAM Chassis, Cabin CAN
X51 1
Low (-) Low (-) Low (-)
SAM Chassis, Cabin CAN SAM Chassis, Cabin CAN SAM Chassis, Cabin CAN
X51 2
High (+) High (+) High (+)
Hardwired ISS (Ignition Hardwired ISS (Ignition Hardwired ISS (Ignition
X51 3 Switch Status), SAM Switch Status), SAM Switch Status), SAM
Chassis Chassis Chassis
X51 4 Not connected Not connected Not connected
Emergency Battery, SAM Emergency Battery, SAM Emergency Battery, SAM
X51 5
Chassis Chassis Chassis
X51 6 Not connected Not connected Not connected
X52 1 Marker Lamp, Side Right Marker Lamp, Side Right Marker Lamp, Side Right
Marker Lamp, Side Right, Marker Lamp, Side Right, Marker Lamp, Side Right,
X52 2
Ground Ground Ground
Marker Lamp, Corner Rear Marker Lamp, Corner Rear Marker Lamp, Corner Rear
X52 3
Right Right Right
Power Feed 2, ABS/BS, Power Feed 2, ABS/BS, Power Feed 2, ABS/BS,
X52 4
Battery Battery Battery
Marker Lamp, Corner Rear Marker Lamp, Corner Rear Marker Lamp, Corner Rear
X52 5
Right, Ground Right, Ground Right, Ground
Power Feed, ABS/BS, Power Feed, ABS/BS, Power Feed, ABS/BS,
X52 6
Ignition Ignition Ignition
Power Feed 1, ABS/BS, Power Feed 1, ABS/BS, Power Feed 1, ABS/BS,
X52 7
Battery Battery Battery
Power Feed 1, ABS/BS, Power Feed 1, ABS/BS, Power Feed 1, ABS/BS,
X52 8
Ground Ground Ground
Power Feed 2, ABS/BS, Power Feed 2, ABS/BS, Power Feed 2, ABS/BS,
X52 9
Ground Ground Ground
X53 1 Marker Lamp, Side Left Marker Lamp, Side Left Marker Lamp, Side Left
Marker Lamp, Corner Rear Marker Lamp, Corner Rear Marker Lamp, Corner Rear
X53 2
Left Left Left
X53 3 Rear View Camera, Ignition Not connected Rear View Camera, Ignition
Marker Lamp, Corner Rear Marker Lamp, Corner Rear Marker Lamp, Corner Rear
X53 4
Left, Ground Left, Ground Left, Ground
Trailer ABS Connector (7), Trailer ABS Connector (7), Trailer ABS Connector (7),
X53 5
ABS Detection ABS Detection ABS Detection
X53 6 Rear View Camera, Ground Not connected Rear View Camera, Ground
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
X53 7 Trailer Turn Lamp Right Trailer Turn Lamp Right Trailer Turn Lamp Right
Marker Lamp, Side Left, Marker Lamp, Side Left, Marker Lamp, Side Left,
X53 8
Ground Ground Ground
X53 9 Trailer Turn Lamp Left Trailer Turn Lamp Left Trailer Turn Lamp Left
Trailer ABS Connector (7), Trailer ABS Connector (7), Trailer ABS Connector (7),
X54 1
Ignition Ignition Ignition
X54 2 Not connected Not connected Not connected
Trailer ABS Connector (7), Trailer ABS Connector (7), Trailer ABS Connector (7),
X54 3
Ground 1 (GND1) Ground 1 (GND1) Ground 1 (GND1)
X54 4 Not connected Not connected Not connected
Trailer Power, Battery or Trailer Power, Battery or Trailer Power, Battery or
X55 1
Ignition Ignition Ignition
X55 2 Trailer Marker Lamps Trailer Marker Lamps Trailer Marker Lamps
X55 3 Trailer Tail Lamps Trailer Tail Lamps Trailer Tail Lamps
X55 4 Trailer Stop Lamps Trailer Stop Lamps Trailer Stop Lamps
X56 1 Trailer, Ground 2 (GND2) Not connected Not connected
End of Frame Primary
X56 2 Not connected Not connected
Trailer Power
X56 3 Not connected Not connected Not connected
Differential Lock Solenoid
X56 4 Not connected Not connected
Return, FA1 and FA2
Differential Lock Feedback
X56 5 Not connected Not connected
Switch Return, FA1
Differential Lock Feedback
X56 6 Not connected Not connected
Switch Return, FA2
End of Frame Primary
X56 7 Not connected Not connected
Trailer Turn Lamps Right
Differential Lock Feedback
X56 8 Switch Supply (Chopped), Not connected Not connected
FA2
X56 9 Not connected Not connected Not connected
End of Frame Primary
X56 10 Not connected Not connected
Trailer Turn Lamps Left
Differential Lock Feedback
X56 11 Switch Supply (Chopped), Not connected Not connected
FA1
Differential Lock Solenoid
X56 12 Not connected Not connected
Driver, FA1 and FA2
End of Frame Primary
X56 13 Not connected Not connected
Trailer Tail Lamps
End of Frame Primary
X56 14 Not connected Not connected
Trailer Stop Lamps
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
End of Frame Primary
X56 15 Not connected Not connected
Trailer Marker Lamps
Power Feed EAPU / WIF Power Feed EAPU / WIF
X57 1 Not connected
Module, Ignition Module, Ignition
Power Feed EAPU (Air Power Feed EAPU (Air
X57 2 Not connected
Processing Unit), Ground Processing Unit), Ground
Air Dryer (Pneumatic, Air Dryer (Pneumatic, Air Dryer (Pneumatic,
X57 3 Electrically Heated), Electrically Heated), Electrically Heated),
Ground Ground Ground
Air Dryer (Pneumatic, Air Dryer (Pneumatic, Air Dryer (Pneumatic,
X57 4 Electrically Heated), Electrically Heated), Electrically Heated),
Accessory Accessory Accessory
Fuel Water Separator Fuel Water Separator Fuel Water Separator
X57 5
Heater Element, Ground Heater Element, Ground Heater Element, Ground
X57 6 Not connected Not connected Not connected
X57 7 Not connected Not connected Not connected
X57 8 Not connected Not connected Not connected
X57 9 Not connected Not connected Not connected
X57 10 Not connected Not connected Not connected
X57 11 Not connected Not connected Not connected
X57 12 Not connected Not connected Not connected
Power Feed EAPU (Air Power Feed EAPU (Air
X57 13 Not connected
Processing Unit), Battery Processing Unit), Battery
X57 14 Not connected Not connected Not connected
Fuel Water Separator Fuel Water Separator Fuel Water Separator
X57 15
Heater Element, Ignition Heater Element, Ignition Heater Element, Ignition
X58 1 Turn Right Rear Lower Turn Right Rear Lower Turn Right Rear Lower
X58 2 Not connected Not connected Not connected
X58 3 Tail Lamp Right Tail Lamp Right Tail Lamp Right
Marker Lamp, Side Left, Marker Lamp, Side Left, Marker Lamp, Side Left,
X58 4
Ground Ground Ground
X58 5 Tail Lamps Right, Ground Tail Lamps Right, Ground Tail Lamps Right, Ground
X58 6 Not connected Not connected Not connected
Fuel Level Sensor, Fuel Level Sensor, Fuel Level Sensor,
X58 7
Feedback Feedback Feedback
X58 8 Tail Lamps Left, Ground Tail Lamps Left, Ground Tail Lamps Left, Ground
X58 9 Not connected Not connected Not connected
X58 10 Turn Left Rear Lower Turn Left Rear Lower Turn Left Rear Lower
X58 11 Not connected Not connected Not connected
X58 12 License Plate Lamp (First) License Plate Lamp (First) License Plate Lamp (First)
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
X58 13 Marker Lamp Side Right Marker Lamp Side Right Marker Lamp Side Right
Marker Lamp Side Right, Marker Lamp Side Right, Marker Lamp Side Right,
X58 14
Ground Ground Ground
X58 15 Fuel Level Sensor, Ground Fuel Level Sensor, Ground Fuel Level Sensor, Ground
X58 16 Marker Lamp, Side Left Marker Lamp, Side Left Marker Lamp, Side Left
X58 17 Not connected Not connected Not connected
X58 18 Tail Lamp Left Tail Lamp Left Tail Lamp Left
X58 19 Backup Lamp 1 Backup Lamp 1 Backup Lamp 1
Stop Lamp, Rear Right Stop Lamp, Rear Right Stop Lamp, Rear Right
X58 20
Lower Lower Lower
X58 21 Stop Lamp, Rear Left Lower Stop Lamp, Rear Left Lower Stop Lamp, Rear Left Lower
X59 1 Backup Switch, Supply Backup Switch, Supply Backup Switch, Supply
Transmission Neutral Transmission Neutral Transmission Neutral
X59 2
Switch, Supply Switch, Supply Switch, Supply
X59 3 Backup Switch, Return Backup Switch, Return Backup Switch, Return
X59 4 Not connected Not connected Not connected
X59 5 Not connected Not connected Not connected
X59 6 Not connected Not connected Not connected
X59 7 Not connected Not connected Not connected
X59 8 Not connected Not connected Not connected
Fuel Water Separator Fuel Water Separator
X59 9 Not connected
Sensor, Feedback Sensor, Feedback
Temperature Sensor Rear Temperature Sensor Rear Temperature Sensor Rear
X59 10
Axle 1, Feedback Axle 1, Feedback Axle 1, Feedback
Differential Lock Solenoid Differential Lock Solenoid Differential Lock Solenoid
X59 11
Driver, RA1 and RA2 Driver, RA1 and RA2 Driver, RA1 and RA2
X59 12 Not connected Not connected Not connected
Temperature Sensor Rear Temperature Sensor Rear Temperature Sensor Rear
X59 13
Axle 2, Feedback Axle 2, Feedback Axle 2, Feedback
Temperature Sensor Rear Temperature Sensor Rear Temperature Sensor Rear
X59 14
Axle 2, Ground Axle 2, Ground Axle 2, Ground
Differential Lock Feedback Differential Lock Feedback Differential Lock Feedback
X59 15
Switch Return, RA1 Switch Return, RA1 Switch Return, RA1
Differential Lock Solenoid Differential Lock Solenoid Differential Lock Solenoid
X59 16
Return, RA1 and RA2 Return, RA1 and RA2 Return, RA1 and RA2
Temperature Sensor Rear Temperature Sensor Rear Temperature Sensor Rear
X59 17
Axle 1, Ground Axle 1, Ground Axle 1, Ground
Transmission Neutral Transmission Neutral Transmission Neutral
X59 18
Switch, Return Switch, Return Switch, Return
Pinout Mapping
Function
Connector Cavity Number
Highline Baseline Midline
Differential Lock Feedback Differential Lock Feedback Differential Lock Feedback
X59 19 Switch Supply (Chopped), Switch Supply (Chopped), Switch Supply (Chopped),
RA1 RA1 RA1
Differential Lock Feedback Differential Lock Feedback Differential Lock Feedback
X59 20 Switch Supply (Chopped), Switch Supply (Chopped), Switch Supply (Chopped),
RA2 RA2 RA2
Differential Lock Feedback Differential Lock Feedback Differential Lock Feedback
X59 21
Switch Return, RA2 Switch Return, RA2 Switch Return, RA2
Table 2, Pinout Mapping
F12 (30A)
F14 (30A)
F13 (20A)
F2 (20A)
F5 (20A)
F6 (15A)
F7 (10A)
F8 (20A)
F9 (30A)
F10 (5A)
85 85 85 85 85 85 85 85
87a 87a 87a 87a 87 87 87 87a 87
87 87 87 87 87a 87a 87a
See
Note: R8
30 86 30 86 30 86 30 86 30 86
30 30 86 30 86
86
R1 R2 R3 R4 R5 R6 R7 R8 R 9
Note: R8
12V From
Megafuse
INTERNAL SAM PC BOARD
GND To
Battery
F1 (20A)
F3 (20A)
F4 (10A)
BAT
G02.05/16
Battery
GND To
Megafuse
12V From
G02.05
Spare IGN ! X58/2 X53/4 −Marker Lamps, Corner Rear Left GND
X53/6 −Rear View Camera GND
X53/8 −Marker Lamps, side left GND
OUTPUTS
UNFUSED
CONSTANT
X54/3 −Trailer ABS Connector (7), GND1
End of Frame Primary Trailer Turn Lamps Right ! X56/7 X58/8 −Tail Lamps, Left, GND
Diff Lock Feedback Switch Supply (Chopped), FA2 ! X56/8 X58/14 −Marker Lamps, Side Right GND
End of Frame Primary Trailer Turn Lamps Left ! X56/10 X58/15 −Fuel Level Sensor, GND
Diff Lock Feedback Switch Supply (chopped), FA1 ! X56/11
Diff Lock Solenoid Driver, FA1 and FA2 ! X56/12 X59/14 −Temperature Sensor Rear Axle 2, GND
End of Frame Primary Trailer Tail Lamps ! X56/13 X59/17 −Temperature sensor rear axle 1, GND
End of Frame Primary Trailer Stop Lamps ! X56/14
BOARD
End of Frame Primary Trailer Marker Lamps ! X56/15
INTERNAL SAM PC
Turn Left Rear, Lower ! X58/10 X51/3 −Hard wired ISS, Chas
License Plate Lamp (First) ! X58/12
Marker Lamp, Side Right ! X58/13 X53/5 −Trailer ABS Connector (7), ABS Detection
Marker Lamp, Side Left ! X58/16
* When specified with Optimized Idle, these pins will not supply power when the key is in the ACC position,
Tail Lamp, Left ! X58/18 X56/4 −Diff Lock Solenoid Return, FA1 and FA2
nor during an Optimized Idle vehicle shutdown event. Optimized Idle is specified by a SAM Cab parameter.
UNFUSED OUTPUTS
Backup Lamp 1 ! X58/19
LOGIC CONTROLLED
X56/5 −Diff Lock Feedback Switch Return, FA1
Stop Lamp, Rear Right Lower ! X58/20 X56/6 −Diff Lock Feedback Switch Return, FA2
Stop Lamp, Rear Left Lower ! X58/21
705 — Unfused Outputs, Grounded Pins, and Inputs
09/19/2007 f545127a
1. Determine if the template has I/O controls available for the affected function.
Open the Datalink Monitor template for the function or output that is not functioning.
Are I/O control buttons available for the affected function?
YES !Go to test 2.
NO !Go to test 5.
2. Use the I/O control feature in Datalink Monitor to test the output circuit.
Does the function or output work when activated with Datalink Monitor?
YES !Go to test 3.
NO !Go to test 4.
3. Use Datalink Monitor to determine if input conditions are met for the function or output to operate.
Are all of the input conditions met?
!
YES Check SAM Chassis programming and parameters. For additional programming/parameter informa-
tion specific to this function, refer to the applicable subject in this manual. If programming/parameters are
OK, replace the SAM Chassis.
!
NO For additional input troubleshooting specific to this function, refer to the applicable subject in this
manual.
4. Rule out the output by manually applying fused power and ground.
Does the function or output work when power and ground are applied manually?
YES !Replace the SAM Chassis.
NO !The problem is in the output power or ground circuits, or the load itself. For additional output trou-
bleshooting specific to this function, refer to the applicable subject in this manual.
5. Determine if input conditions are met for the function or output to operate using Datalink Monitor.
NOTE: To determine which Datalink Monitor template to use, refer to the applicable subject in this
manual.
5.1 Refer to the function or output in this manual to identify what input conditions have to be met in or-
der for the function or output to operate.
5.2 Open the Datalink Monitor template for the applicable function.
5.3 While monitoring the template inputs, attempt to activate the function or output using the normal
method. For example, turn on the headlights if the rotary switch inputs are being tested.
Are all of the input conditions met?
YES!Go to test 6.
NO !For additional input troubleshooting specific to this function, refer to the applicable subject in this
manual.
6. Check available voltage at the consumer.
NOTE: Available voltage tests cannot be performed on every SAM Chassis function. For example,
checking voltage at a turn signal connector will not work. Refer to the applicable subject in this
manual for more details about troubleshooting specific outputs. If test 6 cannot be performed, pro-
ceed to test 7.
6.1 Disconnect the connector at the consumer.
6.2 Activate the function by normal means. Turn on the headlights, for example, if the rotary switch in-
puts are being tested.
6.3 Measure voltage between the positive and ground pins on the connector.
Is there battery voltage across the positive and ground terminals?
YES!Replace the consumer.
NO !Go to test 7.
7. Rule out the output by manually applying fused power and ground.
7.1 Disconnect the SAM connector(s) containing the circuits for the output (power) and ground for the
function being tested.
7.2 Apply fused power to the output circuit using jumper wires, and apply ground to the ground circuit.
Does the function or output work when power and ground are applied manually?
!
YES Check SAM programming and parameters. For additional programming and parameter information,
refer to the applicable subject in this manual. If the programming and parameters are OK, replace the SAM
Chassis.
!
NO The problem is in the output power or ground circuits, or the load itself. For additional output trou-
bleshooting, refer to the applicable subject in this manual.
SAM Chassis
Internal Sam
INPUTS Circuit Board
Relay Fuse OUTPUT
09/19/2007 f545126a
1. Determine if the template has I/O controls available for the affected function.
Open the Datalink Monitor template for the function or output that is not functioning.
Are I/O control buttons available for the affected function?
YES !Go to test 2.
NO !Go to test 3.
2. On SAM Chassis with I/O control, use Datalink Monitor to determine if the output circuit can be elim-
inated as the problem.
NOTE: To determine which Datalink Monitor template to use, refer to the applicable subject in this
manual.
2.1 Open the Datalink Monitor template for the applicable function.
2.2 Using the template, attempt to activate the function or output.
Does the function or output work when activated manually in Datalink Monitor?
NOTE: For normally closed relays, activating the SAM output will turn off the function the relay controls. For
normally open relays, activating the SAM output will turn on the function the relay controls.
YES !Go to test 3.
NO !Go to test 4.
3. Use Datalink Monitor to determine if input conditions are met for function or output to operate.
NOTE: To determine which Datalink Monitor template to use, refer to the applicable subject in this
manual.
3.1 Refer to the applicable function or output, and identify what input conditions have to be met for nor-
mal operation.
3.2 Open the applicable Datalink Monitor template.
3.3 While monitoring the template inputs, attempt to active the function or output using the normal
method. Turn on the headlights, for example, if the rotary switch inputs are being tested.
Are all of the input conditions met?
YES!Go to test 4.
NO !For additional input troubleshooting specific to this function, refer to the applicable subject in this
manual.
4. Check the available voltage at the consumer.
NOTE: Available voltage tests cannot be performed on every SAM function. For example, checking
voltage at a turn signal connector will not work. Refer to the applicable subject for more informa-
tion about troubleshooting the specific outputs. If test 4 cannot be performed, proceed to test 5.
4.1 Disconnect the connector at the consumer.
4.2 Activate the function by normal means. Turn on the headlights, for example, if the rotary switch in-
puts are being tested.
4.3 Measure voltage between the positive and ground pins.
Is there battery voltage across the positive and ground terminals?
YES!Replace the consumer.
NO !Go to test 5.
5. Check for power at the relay coil (low current side).
5.1 Remove the relay from the SAM for the function that is not working.
5.2 Check for voltage in the SAM relay cavity that corresponds to terminal 85 of the relay.
Is there voltage at relay cavity 85?
YES!Go to test 6.
NO !Check fuse F29 on the SAM Chassis.
6. Check for power at the relay common (high current side).
Check for voltage in the SAM relay cavity that corresponds to terminal 30 of the relay.
Is there voltage at relay cavity 30?
YES!Go to test 7.
NO !Check main power to SAM from the MEGA fuse.
7. Check the SAM fuse for the function.
Check the fuse for the function or output.
Is the fuse good?
YES !Go to test 8.
!
NO Check for a short to ground in the output circuit. Check the component that the output supplies power
to for excessive current draw. Make repairs as necessary, and replace the fuse.
8. Determine if the function works when power is manually applied.
Using a fused jumper, apply power to the SAM relay cavity that corresponds to 87 for normally open relay
connections, or 87a for normally closed relays.
Does the function work when power is manually applied at the relay?
YES !Go to test 9.
NO !The problem is in the output power or ground circuits, or the load itself. For additional output trou-
bleshooting, refer to the applicable subject in this manual.
9. Determine if the output works with a test relay that is operating properly.
Remove the relay from the SAM and install the known good relay.
Does the function or output work with a known good relay?
YES !Replace the relay.
NO !Check SAM programming and parameters. For additional programming/parameter information, refer
to the applicable subject in this manual. If programming and parameters are OK, replace the SAM.
09/11/2007 f545125
BATT
SAM Chassis
Fuse OUTPUT
09/11/2007 f545128
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
MSF Master ECU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
MSF Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Sub Bus Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Other MSF Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
Cascadia Data Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
ECU Parameter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
MSF Master Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Sub Bus Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602
Headlight Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603
Turn Signal/Stalk Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604
Steering Wheel Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 605
Clock Spring Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 606
Starpoint Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 607
Troubleshooting
Troubleshooting Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Diagnostic Tests for Verifying Sub Bus Switch Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
Specifications
Sub Bus Switch Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800
4
2 5
05/14/2007 f545032
NOTE: The Starpoint Connector is part of the Cabin CAN Datalink. It is included in this illustration be-
cause the MSF Master connects to the starpoint connector.
– stalk switch
– steering wheel switches
Parameters programmed into the MSF Master determine which sub bus switches belong on the vehicle. For
more information on ECU parameters for Cabin CAN ECUs, refer to G03.04 — Datalink, Diagnostic CAN.
1 2 2
3
3
3 1 2 2
05/14/2007 f545033
A. Daisy-Chain Connection
B. Direct Connection to MSF Master
1. MSF Master 2. MSF Slave-Switch Module 3. 3-Wire Sub Bus
Fig. 2, MSF Slave Switch Connection Methods
The MSF Master provides faults for missing or extra sub bus switches. Missing and extra sub bus switch informa-
tion can be viewed in the following ServiceLink screens:
• ECU List icon: "Faults" screen (CAN protocol)
• MSF icon: "Faults" screen (CAN protocol)
• MSF icon: "Switches" screen (CAN protocol)
Refer to 702 — Diagnostic Tests for Verifying Sub Bus Switch Type for faults related to missing or extra sub
bus switches, as well as diagnostic tests to determine if a sub bus switch is hardwired or signal.
All of these switches are physically connected to the MSF Master via wiring, not via the sub bus. For trou-
bleshooting information about a specific switch function, refer to that function’s subject in this manual.
Headlight Switch: The headlight switch is the input for marker, clearance, tail, and license plate lamps, low- and
high-beam headlamps, and when equipped, fog lamps.
Turn Signal/Stalk Switch: The stalk switch is used for left and right turn signals, high-beam activation, perform-
ing a flash-to-pass, and activating the wipers and windshield washer. It is wired to the MSF. The stalk switch has
three fore/aft positions:
• Pushed: high-beam headlights are activated if the low-beam headlights are on (position 2).
• Neutral: no action.
• Pulled: the flash-to-pass function is performed, regardless of the position of the headlight switch.
The stalk switch has three vertical positions:
• Down: Left turn signal activated
• Neutral: no action
• Up: Right turn signal activated
The stalk switch is also rotated to activate the windshield wipers and pushed inward to activate the windshield
washer pump.
Steering Wheel Switches: The steering wheel switches are the switch pads on the left and right sides of the
steering wheel. They control the following, depending on vehicle options:
• cruise control (on/off, set/resume, accelerate/decelerate, cancel)
• engine brake
• marker interrupt
• menu scroll buttons (+/–) for the driver information center in the instrument cluster
Steering wheel switch inputs to the MSF master are a pulsed signal on two wires, S1 and S2. Each of the steer-
ing wheel switch buttons sets a different resistance across these circuits. To monitor the status of these switches,
use the template "MSF Switches: Hazard, Rotary, Stalk, Steering wheel" in ServiceLink.
MSF Master: The MSF Master reports various faults for these switches, such as short-circuits to power or
ground. Fault codes are identified in 701 — Fault Codes, Table 16.
Cabin CAN
Diagnostic
Databus Connector
SAM Cab 120 Ω
SAE J1939
Databus Engine Control Engine CAN
Module
Databus
Starpoint Connector
60 Ω Motor
ABS Control Module
SAM Chassis Module
Modular Switch
Field (Master) After Treatment
Transmission
Control Module Control Module
Slave Switch
Control Panels
Instrument Gauge
Cluster
Databus
HVAC Control
Switches Front
Slave Switch
Control Panels MSF
Sub Bus Databus
HVAC Control
Switches Rear
VORAD
120 Ω
Other Optional
J1708 ECU’s
05/08/2012 f040753a
The software flashing procedure should only be performed on the MSF in the following cases:
• For a feature upgrade: Adding a new feature to a vehicle may require a newer version of ECU software.
ServiceLink will automatically make available any necessary software upgrades.
• Fixing a problem in the existing software: In case a new version of ECU software is needed to fix a
problem in the existing ECU software, ServiceLink will automatically make available any necessary soft-
ware upgrades.
• Replacing the MSF: Flashing configures the MSF with the most recent software and programs the correct
vehicle parameters.
For instructions on how to use ServiceLink to flash the software of a CAN ECU like the MSF, refer to the Ser-
viceLink User Guide or ServiceLink Help user documentation, available in ServiceLink’s "Help" menu.
3 4 5
2
POWEET
OUTL
12V−10
R
A
PO
OU W
12V TL
ER
−1 ET
0A
05/25/2012 f610939
12 3 4 A
12 3 12 3
B B
12 6 1 4 1 4 7 10 13
2 5 2 5 8 11 14
3 6 3 6 9 12 15
7 1
D C
B B B B
E 3 2 1 3 2 1 3 2 1 3 2 1
04/30/2008 f544920
c
3 2 1
a
6 5 4
05/15/2007 f545036
Pin Function
A Battery Power
B Sub Bus Signal
C Ground
1
2
For sub bus switch functionality, refer to the
3 MSF hardwired sub bus switch drawing
4 A06–53783. Pin function will vary, based on the
individual switch.
5
6
Table 7, Sub Bus Switches
4 3 2 1
8 7 6 5
05/25/2012 f545037
Pin Function
1 Switch Position Code 1
2 Switch Position Code Redundant Circuit
3 Fog Lamp Version*
4 Fog Lamp Signal
5 Switch Position Code 2
6 Backlighting PWM
7 Ground
8 Battery Power from MSF
* With the headlight switch disconnected the resistance between pins 3 and
7 will be approximately 10K ohm when the switch has fog lamp capability.
Table 8, Headlight Switch
1 7
2 8
3 9
10
11
4 12
5 13
6 14
05/25/2012 f545038
Pin Function
1 Ignition Power Feed for Wiper Functions
2 Wiper Code A
3 Wiper Code B
4 Wiper Code C
5 Washer Signal
6 Backlighting
7 Ground
8 Headlamp Low/High Maintain Circuit
9 Headlamp High-Beam Flash Signal
10 Headlamp High Beam signal
11 Headlamp Low-Beam Signal
12 Left Turn Signal
13 Turn Signal Switch, Ignition Power Feed
14 Right Turn Signal
Table 10, Turn Signal/Stalk Switch Connector
Pinout
0 0 0
H H H
1 L 1 L 1 L
2 5 2 5 2 5
3 4 3 4 3 4
5 4 1 3 2 9 8 10 11 14 13 12
05/08/2012 f545171a
1. Ignition Power Feed for Wiper Functions 8. Headlamp Low/High Maintain Circuit
2. Wiper Code A 9. Headlamp High-Beam Flash Signal
3. Wiper Code B 10. Headlamp High-Beam Signal
4. Wiper Code C 11. Headlamp Low-Beam Signal
5. Washer Signal 12. Left Turn Signal
6. Backlighting 13. Turn Signal Switch, Ignition Power Feed
7. Ground 14. Right Turn Signal
Fig. 6, Stalk Switch Internal Schematic
1
2
3
4
05/15/2007 f545039
Pin Function
1 Steering wheel, Switch Signal (S2)
2 Backlighting PWM
3 Steering Wheel, Switch Signal (S1)
4 Ground
Table 12, Steering Wheel Switches
1
2
3
4
5
6
7
8
9
10
05/15/2007 f545040
Pin Function
1 Air bag (+), if used
2 Air bag (–), if used
3 No Connection
4 Backlighting Ground
5 Steering Wheel, Switch Signal (S1)
6 Backlighting PWM
7 Steering Wheel, Switch Signal (S2)
1
2
3
4
5
6
7
8
9
10
05/15/2007 f545040
Pin Function
8 No Connection
9 Horn Signal
10 Horn Switch Battery Power Feed
Table 13, Clock Spring Connector
1 4 7 10 13 16
2 5 8 11 14 17
3 6 9 12 15 18
12/04/2006 f544912
Pin Function
10 MSF Cabin CAN High
12 MSF Cabin CAN Low
17 MSF Ground
Table 14, Starpoint Connector
Backlighting to the switches connected to the MSF is sourced from circuit 29A from the SAM Cab. The MSF out-
puts this PWM signal to the switches it reads.
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Troubleshooting
Diagnostic Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Possible Causes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
Specifications
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800
08/08/2008 f611014
1 2 3 4
1
2
3
06/18/2008 4 f545325
800 — Specifications
Connector 1, 18-Pin
Pin Signal Type Function Connector
1/1 Digital Input_FLEX_01 Dual-Speed Axle
1/2 Digital Input_FLEX_02 Park Brake Interlock
Idle Validation Switch 2 (throttle
1/3 Digital Input_SFP_05
active)
1/4 Digital Output_LP_LS_02 Throttle Position Sensor Ground
1/5 Digital Output_LP_LS_01 DPF Regeneration Lamp
Idle Validation Switch 1 (idle
1/6 Digital Input _SFP_06 1 2 3
active)
1/7 SFP_08 Throttle Position Sensor 4 5 6
Connector 2, 18-Pin
Pin Signal Type Function Connector
2/1 Battery (+) PSU (KL_30) Main Battery +12V
2/2 Battery (–) PSU (KL_31) Main Battery Ground
2/3 Battery (+) Switched PSU Ignition
2/4 K_DIAG_C K-line
2/5 J1708_A_C J1587 (+)
2/6 J1708_B_C J1587 (–) 1 2 3
2/7 Digital Input_FLEX_15 Service Brake Released Switch
4 5 6
2/8 Digital Input_FLEX_16 Remote Throttle Select Switch
7 8 9
2/9 Digital Input_FLEX_09 Remote PTO Switch
2/10 Digital Output_LP_FLEX_03 Amber Warning Lamp 10 11 12
Connector 3, 21-Pin
Pin Signal Type Function Connector
3/1 Analog_In_01 OI Thermostat
3/2 Analog_GND Sensor Return
3/3 Analog_SUP_5V Sensor Supply
3/4 Analog_In_02 PTO
3/5 Analog_Out_01 Not Used
3/6 Analog_Out_02 Not Used
Top2 Lockout Solenoid/AGS2
3/7 Digital Output_HP_HS_01
PTO Valve
1 2 3
Top2 Shift Solenoid/AGS2 PTO
3/8 Digital Output_HP_HS_02
Lamp 4 5 6
AGS2 Backup Lamp/WIF Lamp
3/9 Digital Output_HP_LS_01 7 8 9
(DD15)
3/10 Digital Output_LP_FLEX_02 AGS2 Trans. Temp. Lamp 10 11 12
3/11 SFP_14 Low Coolant Level Sensor 13 14 15
3/12 Digital Output_LP_FLEX_04 AGS2 Check Trans. Lamp
16 17 18
3/13 SFP_09 Vehicle Speed (+)
19 20 21
3/14 SF_VGND Vehicle Speed (–)
3/15 Analog_In_SFP_13 Ambient Air Temp. Sensor
08/15/2008 f545339
3/16 Digital Output_LP_FLEX_05 Red Stop Lamp
3/17 Digital Output_HP_FLEX_02 OI Alarm
ABS Active (AGS2
3/18 Digital Input_SFP_02
Transmission)
3/19 Not Used Not Populated
3/20 Not Used Not Populated
3/21 Not Used Not Populated
Table 3, Connector 3, 21-Pin
Connector 4, 18-Pin
Pin Signal Type Function Connector
4/1 C_ECAN_L Engine CAN (–)
4/2 C_ECAN_GND Engine CAN Shield
4/3 C_ECAN_H Engine CAN (+)
4/4 Digital Input_SFP_11 Not Populated
4/5 Digital Input_SFP_12 Not Populated
4/6 Digital Output_LP_FLEX_06 Wait to Start Lamp (Grid Heater)
4/7 Digital Output_HP_LS_02 High Exhaust Sys. Temp. Lamp 1 2 3
Clutch Released/PTO Request
4/8 Digital Input_FLEX_E1 4 5 6
for AGS2
OI Active Lamp/WIF Lamp 7 8 9
4/9 Digital Output_HP_Flex_01
(MBE 900)
10 11 12
4/10 Digital Output_HP_HS_04 Vehicle Power Shutdown
13 14 15
4/11 Frequency_SFP_10 Not Used
4/12 PWM_FPO_01 Vehicle Speed Output 16 17 18
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
Introduction to Multiplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Vehicle Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
SAE J1587/J1708 Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Datalink Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Troubleshooting
Symptoms of a Malfunctioning J1587 Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Diagnosing the J1587/J1708 Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Inputs Outputs
SAM Cab
Inputs Outputs
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps) Engine Control
Module
SAM Chassis
Pneumatic ABS
Module
Modular Switch
Field (Master)
Transmission
Control Module
Sub Bus
HVAC Control
Stalk Switch Switches Front
Head Lamp
(Steering
Switch
Column)
HVAC Control
Switches Rear
Standard
Radio
Optional
VORAD
Engine Display
Qualcomm
07/02/2007 f040753
1 2
09/13/2007 f545132
1. Diagnostic 2. J1587/J1708
Connector Junction Block
A B
09/13/2007 f545133
J1587 Connector
Pin Color Function
A Dark Green J1587 (+)
B Orange J1587 (–)
Table 1, J1587 Connector
08/29/2008 f544911
3.3 Measure the resistance between the J1587+ and J1587– terminals.
3.4 Measure the resistance between the J1587+ terminal and the vehicle ground.
3.5 Measure the resistance between the J1587– terminal and the vehicle ground.
3.6 Compare the values to Table 4.
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
Introduction to Multiplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Vehicle Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
SAE J1939 Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Terminating Resistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Datalink Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Troubleshooting
Diagnostic Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Diagnosing the J1939 Datalink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Inputs Outputs
SAM Cab
Inputs Outputs
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps) Engine Control
Module
SAM Chassis
Pneumatic ABS
Module
Modular Switch
Field (Master)
Transmission
Control Module
Sub Bus
HVAC Control
Stalk Switch Switches Front
Head Lamp
(Steering
Switch
Column)
HVAC Control
Switches Rear
Standard
Radio
Optional
VORAD
Engine Display
Qualcomm
07/02/2007 f040753
1 2 3
07/17/2008 f610809c
D
E
C
F A B
J
G
H
05/01/2006 f151036b
Diagnostic Connector
Pin Function
A Battery (–)
B Battery (+)
C J1939 CAN High (+)
D J1939 CAN Low (–)
E Reserved
F J1708/J1587 (+)
G J1708/J1587 (–)
H Diagnostic CAN High (+)
J Diagnostic CAN Low (–)
Table 1, Diagnostic Connector
08/29/2008 f544911
07/17/2008 f545342
2.1 Test the J1939 backbone terminating resistance to verify that terminating resistors are installed and
a complete circuit from the diagnostic connector through the J1939 backbone is established. This
does not guarantee that branch circuits to each ECU are OK.
2.2 Turn the key to the OFF position.
2.3 With the multimeter set to the resistance (
) scale, measure the resistance at the diagnostic connec-
tor across pin C (J1939+) and pin D (J1939–).
Compare the resistance values:
• 60 ± 6
: The J1939 wiring is intact and both terminating resistors are installed.
• 120 ± 12
: There is a terminating resistor missing, or a short present. Check the resistance
across the terminating resistors.
• 40 ± 4 : There is a third terminating resistor installed on the datalink. One terminating resis-
tor must be removed. There should be one terminating resistor on each end of the backbone
for a total of two.
• 0-5
: There is a short between J1939+ and J1939– somewhere on the datalink.
• Resistance is greater than 1000
: There is an open circuit between the diagnostic connec-
tor and the J1939 backbone, or both terminating resistors are missing or open.
3. Test the terminating resistors.
3.1 Remove the terminating resistor.
3.2 With the multimeter set to the resistance (
) scale, measure the resistance across both terminals on
the terminating resistor. The acceptable reading value is 110 to 130 ohms. Replace the terminating
resistor if it is not within the acceptable range.
4. Verify resistance on the J1939 branch.
4.1 If the backbone and terminating resistors on the J1939 datalink have been verified, proceed to test-
ing the J1939 branch wiring at the problem ECU to verify connectivity.
4.2 Turn the key to the OFF position.
4.3 Remove the connector for the problem ECU.
4.4 With the multimeter on the resistance setting, measure the resistance between the J1939+ and
J1939– terminals.
Compare the resistance values:
• The resistance is 60 ± 6 : The J1939 wiring is intact. Inspect the connector for a loose con-
nection or corrosion. Verify power and ground to the ECU.
• The resistance is not 60 : There is a problem with J1939 wiring between the ECU connec-
tor and the J1939 backbone.
5. Test the J1939 wiring for short to power and ground.
5.1 Turn the key to the ON position.
5.2 Set the multimeter to read voltage (DC).
5.3 Attach the positive probe of the multimeter to the positive terminal of the battery.
5.4 With the negative probe, measure the voltage at the J1939+ and J1939– terminals.
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Vehicle Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
Cabin CAN Datalink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Cabin CAN Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Message Routing by the Central Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
Diagnostic CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
Control Messaging and ECU Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
Controller Area Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 508
Vehicle Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509
Datalink Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510
Related Subjects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Troubleshooting
Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Possible Causes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
CAN Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703
Specifications
Starpoint Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 801
Datalink Communication Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802
ECU Identification on Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 803
J1939 and J1587/J1708 remain the primary datalinks for chassis and powertrain control (engine, transmission,
and ABS, for example).
ECUs on the Cascadia electrical system communicate on four datalinks:
• SAE J1708/J1587 Datalink
• SAE J1939 Datalink
• Cabin CAN Datalink
• Diagnostic CAN Datalink (used strictly for off-board tool interaction with Cabin CAN ECUs)
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps)
07/02/2007 f040759
ECU 2
B
ECU 1 ECU 3
ECU 4
A C D
E ECU n
12/05/2006 f544921
Modular Switch
Field (MSF) ECU
Starpoint
Connector
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps) Engine Control
Module
SAM Chassis
Pneumatic ABS
Module
Modular Switch
Field (Master)
Transmission
Control Module
Sub Bus
HVAC Control
Stalk Switch Switches Front
Head Lamp
(Steering
Switch
Column)
HVAC Control
Switches Rear
Standard
Radio
Optional
VORAD
Engine Display
Qualcomm
07/02/2007 f040753
2 3
6
07/18/2007 f544916
D
E
C
F A B
J
G
H
05/01/2006 f151036b
Diagnostic Connector
Pin Function
A Battery (–)
B Battery (+)
C J1939 CAN High (+)
D J1939 CAN Low (–)
E CAN Shield (ground)
F J1708/J1587 (+)
G J1708/J1587 (–)
H Diagnostic CAN High (+)
J Diagnostic CAN Low (–)
Table 2, Diagnostic Connector
08/29/2008 f544911
12 3 4 A
12 3 12 3
B B
12 6 1 4 1 4 7 10 13
2 5 2 5 8 11 14
3 6 3 6 9 12 15
7 1
D C
B B B B
E 3 2 1 3 2 1 3 2 1 3 2 1
04/30/2008 f544920
1 4 7 10 13 16
2 5 8 11 14 17
3 6 9 12 15 18
12/04/2006 f544912
801 — Wiring
Datalink Wire Colors
Wire Color
Datalink
High Low
Cabin CAN Light Blue White
Brown with
Brown with
Diagnostic CAN Light Blue
White Stripe
Stripe
Table 7, Datalink Wire Colors
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Vehicle Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
Diagnostic CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
Diagnostic CAN Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Control Messaging and ECU Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
Controller Area Network (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
ECU Parameter and Software Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
ECU Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 508
Datalink Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509
Related Subjects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510
Components
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600
Component Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 601
Troubleshooting
Diagnostic Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Overview of CAN Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
Possible Causes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
Symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703
CAN Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704
Diagnostic CAN Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 705
Specifications
Resistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800
Datalink Wire Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 801
Datalink Communication Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802
ECU Identification on Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 803
CAN datalink wires in the diagnostic connector. An off-board tool can communicate with the Cabin CAN ECUs
via the CGW. See Table 1 for a Cabin CAN ECU’s datalinks for control messaging and troubleshooting.
Communication
Device
Diagnostic
Connector
Shop PC
Modular Switch
Field (MSF) ECU
In a CAN ECUs "Parameters" screen in ServiceLink, parameters will be either view-only or changeable.
All changeable parameters have a part number associated with them, just like a hardware part. When adding,
removing, or changing a feature, the parameters are provided in the form of a part number in the bill of material
(BOM).
Viewing, changing, or re-applying parameters may be necessary in the following scenarios:
• Adding an optional feature (daytime running lights, for example).
• Removing an optional feature.
• Changing the functionality of an existing feature, for example, changing the vehicle’s daytime running light
feature to activate both the marker lights and the low beams, instead of activating only the low beams.
Flashing (or reprogramming) the software is separate from programming the parameters, just as it is in an en-
gine controller.
NOTE: As part of the flashing process in ServiceLink, any parameters that the ECU may have will au-
tomatically be reapplied.
For instructions on how to use ServiceLink to change the parameters of a CAN ECU, see the ServiceLink User
Guide or ServiceLink Help.
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps) Engine Control
Module
SAM Chassis
Pneumatic ABS
Module
Modular Switch
Field (Master)
Transmission
Control Module
Sub Bus
HVAC Control
Stalk Switch Switches Front
Head Lamp
(Steering
Switch
Column)
HVAC Control
Switches Rear
Standard
Radio
Optional
VORAD
Engine Display
Qualcomm
07/02/2007 f040753
2
1
D
E
C
F A B
J
G
H
3
11/27/2006 f544909
D
E
C
F A B
J
G
H
05/01/2006 f151036b
Diagnostic Connector
Pin Function
A Battery (–)
B Battery (+)
C J1939 CAN High (+)
D J1939 CAN Low (–)
E CAN Shield (ground)
F J1708/J1587 (+)
G J1708/J1587 (–)
H Diagnostic CAN High (+)
J Diagnostic CAN Low (–)
Table 2, Diagnostic Connector
08/29/2008 f544911
1
2
Diagnostic CAN
Cabin CAN
5
06/24/2008 f545332
Applicable Modules
Refer to the Table 4 for drawings specific to the affected vehicle vehicle.
703 — Symptoms
Symptoms of a Malfunctioning Diagnostic CAN Datalink:
Cannot connect ServiceLink to any CAN ECUs. See Table 5 for faults related to Diagnostic CAN wiring failures.
YES ! There is no problem with Diagnostic CAN wiring. The problem is with the interface between the ve-
hicle to diagnostic computer or the Central Gateway. Check datalink, power and ground wires on the Central
Gateway.
NO ! Go to test 3.
3. Perform a continuity test.
3.1 Perform a continuity test between diagnostic connector Pin H and CGW connector pin 23.
3.2 Perform a continuity test between diagnostic connector Pin J and CGW connector pin 18.
Is continuity (low resistance) detected?
YES! No further testing is necessary.
NO ! Repair the affected harness.
800 — Resistors
The Diagnostic CAN datalink uses a 60-ohm load resistor value (similar to the "terminating resistors" on the
J1939 datalink), which is built into the central gateway ECU.
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Routed Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
ECU Identification on Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
J1587 Failure Mode Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
ICU3 Roll Call Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
ICU4 J1587 Datalink Roll Call Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
ICU4M J1587 Datalink Roll Call Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
Related Subjects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 508
Troubleshooting
J1587 Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Displayed Roll Call Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 701
ICU3 J1587 Fault Messages After Power On Sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
ICU4 J1587 Datalink Roll Call Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703
ICU4M J1587 Datalink Roll Call Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704
the fault is from a J1587 ECU, and verifies that J1587 is the correct protocol to view for troubleshooting
that fault or ECU.
The CGW has the following wiring connections:
• Each datalink on the vehicle: J1708, J1939, Cabin CAN, and Diagnostic CAN.
• On the Diagnostic CAN, the CGW has a direct connection to the diagnostic connector.
• On the Cabin CAN, the CGW is directly connected to the starpoint connector.
The CGW has the following main functions:
• Routes and translates messages between datalinks.
• Interfaces between off-board tools and Cabin CAN ECUs.
• Provides faults for any missing Cabin CAN ECUs.
In some cases, the Cabin CAN ECUs need information from J1939 or J1708 ECUs. Information sent by the
J1939 or J1708 ECU is picked up by the CGW and passed to the appropriate Cabin CAN ECU. The reverse oc-
curs when a J1939 or J1708 ECU needs information from a CAN ECU.
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps)
07/02/2007 f040759
especially if the ICU has a J1708 connection only. When a J1939 ECU generates an active fault, there may be
up to one active fault on J1708 for that CAN ECU under the MID for that CAN ECU. The HVAC front control unit,
for example, is MID 146. Accurate information for SID/PID or FMI is not displayed for that fault. It appears under
the generic SID of "254", and the FMI may or may not be accurate.
For more information regarding message routing behavior by the CGW, refer to G02.03 – Central Gateway.
The following examples demonstrate how to identify and diagnose faults using Table 1.
• J1708 Fault: MID 146, SID 254, FMI 03
– MID 146 is the Front HVAC.
– The Front HVAC is diagnosed using J1939.
– Load the J1939 fault screen in ServiceLink for diagnostic information.
• J1939 Fault: SA 49, SPN 168, FMI 03
– SA 49 is the Modular Switch Field (MSF).
– The MSF is diagnosed using the CAN protocol.
– Load the CAN fault screen in ServiceLink for diagnostic information.
• J1708 Fault: MID 216, SID 254, FMI 14
– MID 216 is the SAM Chassis.
– The SAM Chassis is diagnosed using the CAN protocol.
– Load the CAN fault screen in ServiceLink for diagnostic information.
• J1708 Fault: MID 136, SID 123, FMI 02
– MID 136 is the ABS module.
– The ABS is diagnosed using the J1708 protocol.
– Load the J1708 fault screen in ServiceLink for diagnostic information.
NOTE: For engine-related faults, refer to the engine manufacturer’s diagnostic software.
NOTE: For engine-related faults, refer to the engine manufacturer’s diagnostic software.
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Routed Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
ECU Identification on Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
J1939 Failure Mode Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
ICU4M J1939 Datalink Roll Call Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
Related Subjects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
Troubleshooting
J1939 Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps)
07/02/2007 f040759
NOTE: Refer to engine manufacturer documentation or diagnostic software for engine faults.
System Overview
Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
Routed Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
ECU Identification on Datalinks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
ICU4M J1587 Datalink Roll Call Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Related Subjects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
Troubleshooting
CAN Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700
To verify whether a J1939 or J1708 fault is routed, perform one of the following steps:
• Use Table 1 to confirm that the ECU MID is for an ECU that is physically connected to J1939 or J1708.
• Connect to ServiceLink. In ServiceLink, routed faults appear in grey text. Select a different protocol until
ECU faults appear in black text. Seeing a fault in ServiceLink’s J1939 or J1708 fault screen in black text
verifies that the fault is from a J1939 or J1708 ECU respectively, and verifies that current protocol selected
is the correct protocol to view for troubleshooting that fault or ECU.
The CGW has the following wiring connections:
• Each datalink on the vehicle (J1708, J1939, Cabin CAN, and Diagnostic CAN).
• On the Diagnostic CAN, the CGW has a direct connection to the diagnostic connector.
• On the Cabin CAN, the CGW is directly connected to the starpoint connector.
The CGW has the following main functions:
• Routes and translates messages between datalinks.
• Interfaces between off-board tools and Cabin CAN ECUs.
• Provides faults for any missing Cabin CAN ECUs.
In some cases, the Cabin CAN ECUs need information from J1939 or J1708 ECUs. Information sent by the
J1939 or J1708 ECU is picked up by the CGW and passed to the appropriate Cabin CAN ECU. The reverse oc-
curs when a J1939 or J1708 ECU needs information from a CAN ECU.
Diagnostic CAN
Central Gateway
(500kbps) SAE J1939−13
SAE J1708
9−Pin connector
(9.6kbps)
SAM Cab
Cabin CAN SAE J1939
(125kbps) (250kbps)
07/02/2007 f040759
NOTE: Items in parenthesis indicate a message that is routed to the CGW from an ECU that is not
physically connected to the CGW.
The following examples demonstrate how to identify and diagnose faults using Table 1.
• J1708 Fault: MID 146, SID 254, FMI 03
– MID 146 is the Front HVAC.
– The Front HVAC is diagnosed using J1939.
– Load the J1939 fault screen in ServiceLink for diagnostic information.
• J1939 Fault: SA 49, SPN 168, FMI 03
– SA 49 is the Modular Switch Field (MSF).
– The MSF is diagnosed using the CAN protocol.
– Load the CAN fault screen in ServiceLink for diagnostic information.
• J1708 Fault: MID 216, SID 254, FMI 14
– MID 216 is the SAM Chassis.
– The SAM Chassis is diagnosed using the CAN protocol.
– Load the CAN fault screen in ServiceLink for diagnostic information.
• J1708 Fault: MID 136, SID 123, FMI 02
– MID 136 is the ABS module.
– The ABS is diagnosed using the J1708 protocol.
– Load the J1708 fault screen in ServiceLink for diagnostic information.