2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 288
瀚慖f the passenger door will not unlock and unlatch with a single pull of the door handle, refer to Passenger and Rear Door Release
Command Malfunction.
Circuit/System Testing
Driver Door Release Command Malfunction
1. Ignition OFF, disconnect the X4 harness connector at the K84 keyless entry control module.
2. Verify that a test lamp does not illuminate between the signal circuit terminal 3 and ground.
瀚慖f the test lamp is ON, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
3. If all circuits test normal, replace the K84 keyless entry control module.
Passenger and Rear Door Release Command Malfunction
1. Ignition OFF, disconnect the X4 harness connector at the K84 keyless entry control module.
2. Verify that a test lamp does not illuminate between the signal circuit terminal 14 and ground.
瀚慖f the test lamp is ON, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
3. If all circuits test normal, replace the K84 keyless entry control module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM or keyless entry control module replacement,
setup and programming
B252C
DTC B252C
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.
DTC Descriptor
DTC B252C 00
- Child Security Lock Switch Circuit
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) monitors the voltage level in the child security door lockout switch signal circuit, when the switch is in the open
position the voltage in the signal circuit will be equal to the B+ voltage level. When the child security door lockout switch is pressed, voltage within
the signal circuit drops and the BCM will detect the voltage drop and will energize the Door Lock relay to disable the interior rear door handles.
Conditions for Running the DTC
The system voltage is 9-16 V.
Conditions for Setting the DTC
The BCM has detected a short to ground on the child security lockout switch signal circuit for greater than 60 seconds.
