2010 Cadillac Truck SRX AWD V6-3.0L Page 561
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Liftgate Description and Operation (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Description and Operation/Liftgate)
Electrical Information Reference
* 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)
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. DTC B2494 should not be set as a history DTC.
瀚慖f DTC B2494 is set only as history, replace the S45A liftgate handle switch-exterior.
2. Ignition ON, observe the scan tool rear Liftgate Handle Switch parameter while pressing and releasing the exterior S45A liftgate handle
switch-exterior. The parameter should change between Active and Inactive.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the S45A liftgate handle switch-exterior.
2. Test for less than 10 ohm between the low reference circuit terminal 1 and ground.
瀚慖f greater than the specified range, test the low reference circuit terminal for a short to voltage or an open/high resistance. If the circuit
tests normal, replace the K39 liftgate control module.
3. Ignition ON, verify the scan tool Liftgate Handle Switch parameter is Inactive.
瀚慖f not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K39 liftgate control
module.
4. Connect a 3 A fused jumper wire between the signal circuit terminal 2 and ground, verify the scan tool Liftgate Handle Switch parameter is
Active.
瀚慖f not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the
K39 liftgate control module.
5. If all circuits test normal, test or replace the S45A liftgate handle switch-exterior.
Component Testing
1. Ignition OFF, disconnect the harness connector at the S45A liftgate handle switch-exterior.
2. Test for infinite resistance between the signal terminal 2 and the low reference terminal 1 with the switch in the open position.
瀚慖f not the specified value, replace the S45A liftgate handle switch-exterior.
3. Test for less than 2 ohm between the signal terminal 2 and the low reference terminal 1 with the switch in the closed position.
瀚慖f greater than the specified range, replace the S45A liftgate handle switch-exterior.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic repair.
* Liftgate Release Switch Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Switch/Service and
Repair/Liftgate Release Switch Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for liftgate control module replacement, setup and
