CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

CH-15

J CONSTRUCTION AND OPERATION 1. Shift & Select Actuator

General D The shift & select actuator consists of a shift motor, select motor, shift stroke sensor, select stroke sensor, and shift & select mechanism (shift & select lever, shift & select lever shaft, shift motor shaft, select motor shaft, ring gear, and a lever to rotate the shift & select lever shaft). This actuator cannot be disassembled. D The rotation of the shift motor is transmitted to the reduction gears and the shift & select lever shaft and causes the shift & select lever to rotate. D The rotation of the select motor is transmitted to the rack & pinion gear and the shift & select lever shaft and causes the shift & select lever to slide. D The movement of the shift & select lever is transmitted to the shift fork shaft via the shift fork shaft lever. As a result, the gear position changes. Shift Stroke Sensor Shift & Select Actuator Select Motor Shift Motor Lever to rotate shift & select lever shaft Select Motor Shift Motor Shaft Shaft (Gear) Shift Motor Select Stroke Sensor

CH

Ring Gear Shift & Select Shift & Select Lever Lever Shaft

Select Motor

Shift & Select Lever Shaft

Shift & Select Lever

Shift & Select Lever Select Shift Fork Shaft Lever

5 Shift 3 Shift Fork 1 Shaft Lever Shift Fork Shaft Lever

R 4 Shift 2 Shift Fork Shaft Lever Select View of shift and select operation as seen from A

293CH19

CH-16
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CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

Shift Operation A Shift Motor Shaft (Gear) Ring Gear Lever to rotate shift & select lever shaft

Shift Motor Shift & Select Lever

Shift & Select Lever Shaft

244CH10

Shift Motor

Shift Motor Shaft (Gear)

Ring Gear

Shift & Select Lever

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Shift & Select Lever Shaft

Lever to rotate shift & select lever shaft

244CH32

Select Operation A Select Motor Select Motor Shaft

Shift & Select Lever

Shift & Select Lever Shaft

244CH11

Select Motor

Select Motor Shaft

Shift & Select Lever Shaft

Shift & Select Lever

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CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM Service Tip

CH-17

Make sure that the gear is in the neutral position before removing the shift & select actuator. If the gear cannot be shifted to the neutral position due to malfunctions in the actuator and/or transaxle gear, remove the plug from the shift & select actuator and confirm the slit is in the neutral position. If not, use a screwdriver to set it in the neutral position. Neutral

1st, 3rd, 5th

2nd, 4th, Rev

293CH06

CH

CH-18

CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

Shift and Select Stroke Sensors D The shift and select stroke sensors consist of 2 Hall ICs and a magnetic yoke that rotates in unison with the shift & select lever shaft movement. The shift and select stroke sensors convert the changes in the magnetic flux that are caused by the rotation of the shift motor and the selector motor (hence, the rotation of the magnetic yoke) into electric signals, and output them to the M-MT ECU. The M-MT ECU determines the extent of the shift stroke and the select stroke from these electric signals in order to determine the present gear position. D The main and sub circuits in the shift stroke sensor and the select stroke sensor exhibit the same output characteristics. Hall ICs

4.5 Output Voltage 2.5 (V) 0.5 49.6 49.6 0 Sensor Shaft Rotation Angle (_) 55_
1st, 3rd, 5th For Shift 2nd, 4th, Rev. 5th, Rev. For Select 1st, 2nd
293CH20

Magnetic Yoke 0_ 55_

Sensor Vane

Sensor Vane
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System Diagram A Shift and Select Stroke Sensors Magnetic Magnet Yoke
VCS1, VCL1 VSS1, VSL1 E2S1, E2L1 VCS2, VCL2 VSS2, VSL2 E2S2, E2L2

Hall IC (Main)

M-MT ECU

Hall IC (Sub)

Sensor Vane Magnet

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CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

CH-19

2. Clutch Actuator
General D The clutch actuator consists of clutch motor, clutch stroke sensor, worm shaft, worm wheel, push rod and assist spring. This actuator cannot be disassembled. D The rotation of the clutch motor travels to the reduction gears of the worm shaft and the worm wheel, thus causing the worm wheel to rotate. This movement causes the push rod to move via a fulcrum provided on the worm wheel, actuating the clutch release lever. D The worm wheel is provided with an assist spring, which provides a force to assist the movement of the push rod when the clutch is being operated. This reduces the load on the clutch motor at the time the clutch is being released. Clutch Release Lever Clutch Stroke Sensor Push Rod Release Engage Worm Wheel Fulcrum

CH

Sensor Arm Worm Shaft Clutch Motor Clutch Actuator

Assist Spring
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CH-20

CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

Clutch Stroke Sensor D Same as the shift and select stroke sensors, the clutch stroke sensor consists primarily of 2 Hall ICs (main and sub), and a magnetic yoke that rotates in unison with the rotation of the worm wheel. D The 2 Hall ICs convert the changes in the magnetic flux that are caused by the rotation of the clutch motor (hence, the rotation of the magnetic yoke) into electric signals, and output them to the M-MT ECU. The M-MT ECU determines the extent of the clutch stroke from these electric signals. D The main and sub circuits in the clutch stroke sensor exhibit the same output characteristics. D The basic construction and operation of the shift and select stroke sensors are the same as for the clutch stroke sensor. Hall ICs

4.5 Output Voltage 2.5 (V) Magnetic Yoke 0_ 55_ 55_ Sensor Vane 0.5 49.6 Clutch Engage 0 49.6 Clutch Release

Sensor Shaft Rotation Angle (_)

293CH21

Sensor Vane
244CH07

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System Diagram A Clutch Stroke Sensor Magnetic Yoke Magnet

Hall IC (Main)

VCR1 VSR1 E2R1 VCR2 VSR2 E2R2

M-MT ECU

Hall IC (Sub)

Sensor Vane Magnet

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CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

CH-21

3. LCC (Load Controlled Clutch cover) Mechanism

General D To minimize the increase in the clutch operating load that results from the change in the pressure plate height with the wear of the clutch disc facing, the LCC (Load Controlled Clutch cover) mechanism mechanically adjusts the pressure plate height to a predetermined position. D The LCC mechanism is provided in the clutch cover and consists of a pinion, which is located on the upper pressure plate, and a lower rack, upper rack, adjustment wedge, and spring, which are located on the lower pressure plate. D Upon determining an increase in the clutch operating load through the load (clutch motor amperage) that is applied to the clutch motor, the M-MT ECU operates the clutch actuator in order to move the diaphragm spring to the operating range of the LCC mechanism. This enables the LCC mechanism to operate and mechanically adjust the pressure plate height to a predetermined position.

CH
Diaphragm Spring LCC Mechanism

Diaphragm Spring Height

Lower Pressure Plate

266NF38

Upper Pressure Plate Pressure Plate Height

Diaphragm Spring

Pinion

Adjust Wedge Lower Pressure Plate

Lower Rack
266NF39

CH-22 Operation

CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

If the M-MT ECU determines that the clutch operating load is more than normal based on the clutch motor amperage, it activates the clutch actuator to operate the LCC mechanism after the ignition switch is turned OFF with the vehicle stopped. The M-MT ECU starts this operation prior to the parking control (see page CH-35) that is performed when the ignition switch is turned OFF. D The diaphragm spring is compressed to the LCC operation range by the clutch actuator, allowing the upper pressure plate and the pinion to move upward more than normal. As result, the pinion and the upper rack become disengaged. Compress Force Pinion

Upper Pressure Plate

Upper Rack

Disengage
266NF40

D When the pinion and the upper rack are disengaged, the spring force causes the upper rack to move diagonally to the right along the teeth of the lower rack. As a result, the tooth position of the upper rack and the pinion shifts by 1 pitch, as compared to before the operation of the LCC mechanism.

Spring Force

Spring
266NF41

D The M-MT ECU stops the clutch actuator based on signals from the clutch stroke sensor. Then the tooth position between the pinion and the upper rack is shifted 1 pitch, as compared to before the operation of the LCC mechanism. As a result, the pinion and the upper pressure plate move together to the left and engage with lower rack.

One Pitch
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CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

CH-23

D At this time, the upper pressure plate also moves via the adjustment wedge, causing the position of the upper pressure plate to become higher than before. Additionally, the diaphragm spring moves via the fulcrum, causing the position of the diaphragm spring to become lower than before.

Diaphragm Spring Height

Adjustment Wedge

Upper Pressure Plate Height

266NF43

Diaphragm Spring Height: Height Before u Height After Upper Pressure Plate Height: Height Before t Height After

CH

CH-24

CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

4. Shift Lever Assembly

General D The shift lever mainly consists of the shift position sensor, transmission shift main switch, shift lock solenoid and shift lever sub-assembly. D The multi-mode manual transmission system uses a shift-by-wire system in which the M-MT ECU changes the gear position via actuators in accordance with the shift lever position that has been detected through the shift lever position sensor and the transmission shift main switch. D An electrical shift lock mechanism that uses a shift lock solenoid to restrict the movement of the shift lever has been adopted.

Shift Lever Subassembly Shift Lever Position Sensor Transmission Shift Main Switch

Shift Lock Solenoid

293CH11

CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM Shift Position Sensor and Transmission Shift Main Switch

CH-25

D The shift lever position sensor consists of a Link 1 circuit that detects the R, N, E, and M positions of the shift lever, and a Link 2 circuit that detects the + and positions. The circuits are connected to the shift lever via the respective links. The contact switches (6-contact switches for Link 1, and 2-contact switches for Link 2) of the circuits turn ON and OFF in accordance with the fore-aft movement of the shift lever. The M-MT ECU determines the present shift lever position in accordance with the ON/OFF status of these contact switches. D The transmission shift main switch detects the side-to-side movement of the shift lever. It turns OFF when the shift lever is in the R, N, or E position, and ON in the M, +, or position.

+$ Link 1

CH
Link 2

R $ N $ E, M
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Shift Lever Position Sensor

CH-26

CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM

D The shift lever position sensor and the transmission shift main switch convert the shift lever position into electric signals and output them to the M-MT ECU. The M-MT ECU determines the present shift lever position from these signals and operates the actuators to change the gear position.
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Shift Lever Position Sensor Cross Section A

Contact Point Link 2 Link 1

Contact Point Plate

Contact Point Plate

Contact Point for LSWR, LSSC, LSNC and LSW

Contact Point for LSRC, LSWS, LSWN and LSW+

293CH07

Contact Point LSRC LSWR Link 1 LSSC LSWS LSNC LSWN Link 2 LSW LSW+

Shift Lever Position R OFF ON ON OFF ON OFF OFF OFF OFF N ON OFF ON OFF OFF ON OFF OFF OFF E ON OFF OFF ON ON OFF OFF OFF OFF M ON OFF OFF ON ON OFF OFF OFF ON ON OFF OFF ON ON OFF ON OFF ON + ON OFF OFF ON ON OFF OFF ON ON

Transmission Shift Main Switch

CHASSIS MULTI-MODE MANUAL TRANSMISSION SYSTEM Shift Lock Mechanism D The shift lock mechanism activates under the conditions listed below.

CH-27

Activates when the ignition switch is turned from ON to OFF, and locks the shift lever in the position (R, N, E and M) in which the ignition switch has been turned OFF. Thus, it disables the operation of the shift lever with the ignition switch OFF (when the shift & select actuator is inactive). As a result, it prevents the shift position selected at the shift lever and the actual shift position in the transaxle from being mismatched, thus preventing the unintended operation of the shift lever. When the brake pedal is not depressed for a minimum of 2 seconds while the following three conditions are satisfied, the shift lock mechanism activates to lock the shift lever in the neutral position: D Shift lever is in the neutral position D The vehicle speed is approximately 9 km/h (6 mph) or less D Engine is running Thus, it prevents the unintended operation of the shift lever, which prevents the vehicle from moving suddenly. D The shift lock mechanism becomes deactivated when the ignition switch is turned OFF to ON and the brake pedal is depressed, thus allowing the driver to operate the shift lever. D A shift lock release button that can manually cancel the shift lock mechanism has been provided.
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CH

System Diagram A

Stop Light Switch

Ignition Switch

M-MT ECU

Combination Meter D Vehicle Speed Signal

D Shift Lock Solenoid D Shift Lever Position Sensor D Transmission Shift Main Switch

244CH30