G35 Sedan V6-3.5L (VQ35HR) (2008)
Steering Control Module: Service and Repair
With 4WAS
Additional Service When Replacing Control Unit
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Description
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Perform 4WAS front actuator adjustment after replacing 4WAS front control unit.
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Perform 4WAS front actuator adjustment when performing any service below.
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4WAS front actuator and the steering components (including wheel alignment) removal. Refer to STC-27, "4WAS FRONT ACTUATOR
NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement (Pattern 1)". See: Testing and Inspection/Programming and
Relearning/Additional Service When Replacing Control Unit
CAUTION:
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Check the following items before the removal:
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4WAS warning lamp is turned OFF after the engine starts.
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Self-diagnosis of each control unit of 4WAS system (4WAS front control unit/4WAS main control unit) is performed. Check that
4WAS system is controlled properly.
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4WAS front actuator and the steering components (including wheel alignment) installation. Refer to STC-28, "4WAS FRONT ACTUATOR
NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement (Pattern 2)". See: Testing and Inspection/Programming and
Relearning/4WAS Front Actuator Neutral Position Adjustment
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4WAS front control unit and the steering angle sensor replacement. Refer to STC-28, "4WAS FRONT ACTUATOR NEUTRAL POSITION
ADJUSTMENT: Special Repair Requirement (Pattern 2)". See: Testing and Inspection/Programming and Relearning/4WAS Front Actuator
Neutral Position Adjustment
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When driving while misaligning the steering wheel position (center) after installing 4WAS front actuator. Refer to STC-30, "4WAS FRONT
ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement (Pattern 4)". See: Testing and Inspection/Programming and
Relearning/4WAS Front Actuator Neutral Position Adjustment
4WAS Front Control Unit
4WAS FRONT CONTROL UNIT
STC-177 Exploded View
Removal and Installation
REMOVAL
1. Turn the ignition switch OFF.
2. Remove the instrument driver lower panel.
3. Disconnect 4WAS front control unit connectors.
CAUTION: Disconnect 4WAS front control unit connectors 10 minutes after turning the ignition switch OFF.