2010 Cadillac Truck SRX AWD V6-3.0L Page 265
Power Door Latch Description and Operation (See: Body and Frame/Locks/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)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition OFF, with the doors closed and locked, approach the vehicle with the keyless entry transmitter and pull the exterior driver door handle. The
driver door should unlock and unlatch allowing the driver door to be pulled open.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the A23D door latch assembly-driver.
2. Connect a test lamp between control circuit terminal 10 and ground.
3. Ignition ON, command the door to UNLATCH by lifting the driver exterior door handle. The test lamp should illuminate during the
UNLATCH command.
瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal. replace the K84 keyless entry
control module.
瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal. replace
the K84 keyless entry control module.
4. Connect a test lamp between control circuit terminal 5 and B+.
5. Command the door to UNLATCH by lifting the driver exterior door handle. The test lamp should illuminate during the UNLATCH
command.
瀚慖f the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal. replace the K84 keyless entry
control module.
瀚慖f the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal. replace
the K84 keyless entry control module.
6. If all circuits test normal, test or replace the A23D door latch assembly-driver.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Front Side Door Lock Replacement (See: Body and Frame/Locks/Door Locks/Service and Repair/Front Side Door Lock Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the keyless entry control module replacement,
setup, and programming
B251A
DTC B251A-B251F
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
