2010 Cadillac CTS Sedan AWD V6-3.6L Page 493

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 493



- Liftgate Latch Control Circuit Open



Diagnostic Fault Information



Circuit/System Description



The latch motor is a bi-directional motor and cinch or unlatch operation is the result of the direction of the motor rotation. The liftgate module



controls the latch motor through the control circuits by supplying power and ground in the appropriate polarity. The motor control circuits are



monitored by the liftgate module prior to activation for a high or low condition and during motor operation for an insufficient current flow



condition.



Conditions for Running the DTC



The system voltage is 9-16 V.



Conditions for Setting the DTC



B2495 01



The liftgate module detects a short to voltage in the liftgate latch motor cinch control circuit or the liftgate latch motor release control circuit.



B2495 02



The liftgate module detects a short to ground in the liftgate latch motor cinch control circuit or the liftgate latch motor release control circuit.



B2495 04



The liftgate module detects an open/high resistance in the liftgate latch motor cinch control circuit or the liftgate latch motor release control circuit.



Action Taken When the DTC Sets



The liftgate will be inoperative in the power and manual modes.



Conditions for Clearing the DTC



* The DTC will be current for as long as the fault is present.



* When the fault is no longer present, the DTC will be a history DTC.



* A history DTC will clear after 50 ignition cycles.



Diagnostic Aids



Note: Before testing can be performed, the liftgate must be opened. Refer to Opening the Liftgate Without Electrical Power (See: Body and



Frame/Doors, Hood and Trunk/Trunk / Liftgate/Service and Repair/Procedures) for the appropriate procedure.



Whenever the liftgate module loses power or is disconnected, the ignition must be cycled OFF then ON in order to reactivate the liftgate module.



Reference Information



Schematic Reference



Liftgate Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Liftgate Schematics)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views)



Description and Operation



Liftgate Description and Operation (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Description and Operation/Liftgate



Description and Operation)



Electrical Information Reference



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit



Testing/Testing for Intermittent Conditions and Poor Connections)



* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)



* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

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