2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 816
C0402 04
The ignition is ON.
C0402 61
* Engine running.
* When requested torque is less than 25 Nm (18 lb ft) and the calculated temperature is in the range of 0-90掳C (32-194掳F).
Conditions for Setting the DTC
C0402 02
Voltage is applied to the rear drive clutch solenoid valve. An error is detected if the current is greater than the current which corresponds to less
than 2 ohm resistance in the solenoid valve.
C0402 04
The measured current deviates from the nominal value with more than 200 mA for more than 100 ms.
C0402 42 and C0402 43
The solenoid valve calibration values stored in the rear differential clutch control module EEPROM are invalid or out of range.
C0402 4B
There are no solenoid valve calibration values stored in the differential clutch control module EEPROM.
C0402 61
An error is detected if the solenoid valve is not engaging adequately over a predetermined test sequence.
Action Taken When the DTC Sets
C0402 02, C0402 04 and C0402 61
One or more of the following actions may occur:
* All-wheel drive (AWD) is disabled.
* Service Rear Axle is displayed on the driver information center.
C0402 42, C0402 43 and C0402 4B
An error record is stored in the rear differential clutch control module. No action will be performed.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* The DTC is not detected in 40 consecutive ignition cycles.
Reference Information
Schematic Reference
Rear Axle Schematics (See: Transmission and Drivetrain/Differential Assembly/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Rear Drive Axle Description and Operation (See: Transmission and Drivetrain/Differential Assembly/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
