FEATURES

5.10 IDLE SHUTDOWN TIMER AND VSG SHUTDOWN

The Idle Shutdown Timer will shutdown the engine if it remains idling for a specified period of
time. The options that can operate with Idle Shutdown Timer are Idle Shutdown Override, Vehicle
Power Shutdown or Shutdown on Variable Speed Governor (VSG).

5.10.1 OPERATION

Certain conditions must be met for the entire time-out period for shutdown to occur. These
conditions include:
Coolant temperature above 14 F (–10 C)
Engine operation at idle
The parking brake interlock digital input switched to battery ground (if configured)
OEM supplied interlocks enabled
Ignition ON
Fueling is stopped after the specified idle time; the ignition circuit remains active after the engine
shuts down. The AWL will flash 20 seconds before the shutdown occurs. The RSL will flash 10
seconds before shutdown occurs. The AWL will blink until the ignition is turned off to indicate
shutdown has occurred. The ignition switch must be cycled to OFF (wait 10 seconds) and back to
ON before the engine will restart, if shutdown occurs.
Idle Shutdown and VSG Shutdown may be configured to either:
Require the park brake to be on to activate the timer
Activate the timer regardless of park brake state and reset if the accelerator pedal is above
idle
Activate the timer regardless of park brake state and reset only if there is a change in
the accelerator pedal

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 MBE ELECTRONIC CONTROLS

A Park Brake Switch may be installed (see Figure 5-14). Idle Shutdown Timer operates with
a digital input configured as a park brake and switched to battery ground. The time can range
from 1 to 5000 seconds (approximately 1hr and 38 minutes).

Figure 5-14 Park Brake Digital Input

Idle Shutdown Override - Optional

Idle Shutdown Override allows the operator to override the idle shutdown to keep the engine
idling if this feature is enabled.
The timer can be reset by one of the following configurable conditions:
Engine Shutdown override button has been pressed
Clutch pedal has been pressed
Service brake has been pressed
Accelerator has been pressed above the idle position or has been fully pressed and released
Park Brake has been released

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FEATURES

Vehicle Power Shutdown - Optional

Vehicle Power Shutdown is used with Idle Timer Shutdown or Engine Protection Shutdown.
After the idle timer times out or engine protection shuts the engine down, the Vehicle Power
Shutdown relay shuts down the rest of the electrical power to the vehicle.
A Vehicle Power Shutdown relay can be installed to shutdown all electrical loads when the
engine is shutdown (see Figure 5-15). The engine will shutdown after the specified idle time and
will reset the relay (ignition circuit).

Figure 5-15 Vehicle Power Shutdown Relay

All electrical loads that should be turned OFF when the engine shuts down should be wired
through this relay.

Shutdown on VSG - Optional

This option, when enabled, allows the engine to be shutdown when operating on VSG when the
conditions are met for the Idle Timer Shutdown.

5-54 All information subject to change without notice.

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 MBE ELECTRONIC CONTROLS

Maximum Engine Load Shutdown — Optional

This option, when enabled, allows the setting of a maximum load above which idle shutdown is
disabled.

5.10.2 PROGRAMMING REQUIREMENTS AND FLEXIBILITY

To program the Idle Shutdown timer, the digital inputs listed in Table 5-42 must be configured.

Parameter
Description Pin Type Setting Default
ID
0 = Disabled
Park Brake 21/16 Digital Input 0 1 13 08
1 = Enabled
0 – Hardwired
Park Brake
1 – Source Address 1 (SA1)
Input — Digital Input 0 1 13 09
2 – Source Address 2 (SA2)
Configuration
3 – Source Address 3 (SA3)

Table 5-42 Idle Shutdown Timer Digital Input

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FEATURES

The Idle Shutdown timer options listed in Table 5-43 can be programmed by VEPS or minidiag2.

Parameter
Parameter Description Choice / Range Default Access
ID
0 = Disable
1 = Enable with Park Brake
2 = Enable without Park Nexiq DDR,
IDLE SHUTDOWN Enables or Disables the Brake, Reset for Accelerator DDDL,
0 1 17 01
ENABLE Idle Shutdown feature. Position > Idle VEPS,
3 = Enable without Park minidiag2
Brake, Reset for Change in
Accelerator Pedal Position
The amount of engine
Nexiq DDR,
idle time that is
IDLE SHUTDOWN DDDL,
allowed before the 1 to 5000 seconds 60 sec 1 17 02
TIME (MIN) VEPS,
Idle Shutdown feature
minidiag2
stops fueling the engine.
0 = Disable
1 = Enable with Park Brake
Enables or disables the
2 = Enable without Park Nexiq DDR,
Idle Timer Shutdown
VSG SHUTDOWN Brake, Reset for Accelerator DDDL,
feature when operating 0 1 17 03
ENABLE Position > Idle VEPS,
on the Variable Speed
3 = Enable without Park minidiag2
Governor.
Brake, Reset for Change in
Accelerator Pedal Position
The amount of engine
Nexiq DDR,
idle time that is allowed
VSG SHUTDOWN DDDL,
before the idle shutdown 1 to 5000 seconds 60 sec 1 17 04
TIME VEPS,
feature stops fueling the
minidiag2
engine.
Minimum coolant
MIN COOLANT TEMP temperature before VEPS,
-40 C to 200 C -10 C 1 17 08
FOR SHUTDOWN an idle shutdown will minidiag2
occur
Nexiq DDR,
ENABLE IDLE/VSG Enables/disables
0 = Disable DDDL,
SHUTDOWN override of Idle or VSG 1 1 17 09
1 = Enable VEPS,
OVERRIDE Shutdown
minidiag2
MAX ENGINE VSG shutdown disabled
VEPS,
LOAD FOR VSG for engine loads greater 0–5000 Nm 100 1 17 05
minidiag2
SHUTDOWN than this value

Table 5-43 Idle Shutdown Timer Programming Options

5-56 All information subject to change without notice.

7SA826 0310 Copyright © 2003 DETROIT DIESEL CORPORATION