2010 Cadillac Truck SRX AWD V6-3.0L Page 270
B251A 02
The BCM detects a short to ground on the passenger door lock actuator unlock control circuit.
B251B 04
The keyless entry control module detects an open/high resistance in the driver door latch motor unlatch control circuit.
B251B 02
The BCM detects a short to ground on the driver door lock actuator unlock control circuit
B251C 04
The keyless entry control module detects an open/high resistance on the passenger door latch motor unlatch control circuit.
B251D 04
The keyless entry control module detects an open/high resistance on the left rear door latch motor unlatch control circuit.
B251E 04
The keyless entry control module detects an open/high resistance on the right rear door latch motor unlatch control circuit.
Action Taken When the DTC Sets
The affected door will require a pull of the exterior door handle to unlock the door and a second pull of the exterior door handle to open the door.
Conditions for Clearing the DTC
* This 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 40 ignition cycles
Diagnostic Aids
DTC B1330 03 and B251A 02 may sent concurrently, correct the condition for setting DTC B1330 03 first before performing diagnostics testing
for B251A 02. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code
(DTC) List - Vehicle) to locate the correct procedure.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Power Door Locks Description and Operation (See: Body and Frame/Locks/Power 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
1. 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.
