Wednesday, May 19, 2021

2010 Cadillac Truck SRX FWD V6-3.0L Page 288

2010 Cadillac Truck SRX FWD V6-3.0L 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.

No comments:

Post a Comment