B252E

DTC B252E

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions)provides an overview of each diagnostic category.

DTC Descriptor
DTC B252E 02
- Child Security Lock Switch Indicator Circuit Short To Ground

Diagnostic Fault Information





Circuit/System Description

The body control module (BCM) will provide a ground for the child door lock indicator control circuit when the BCM receives a child door lockout command. The indicator will illuminate to indicate that the rear door latches have been disabled.

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 indicator control circuit for greater than 60 seconds.

Action Taken When the DTC Sets

The child lockout system will function normally but the child security lockout indicator will be continuously illuminated.

Conditions for Clearing the DTC

* The 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 50 ignition cycles

Reference Information
Schematic Reference

Door Lock/Indicator Schematics (Door Lock/Indicator Schematics)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

Power Door Locks Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning)for scan tool information

Circuit/System Verification

Ignition ON, observe the function of the child security lockout indicator while pressing and depressing the child lockout switch. The child security lockout indicator should turn ON and OFF each time the child lockout switch is pressed.

Circuit/System Testing

1. Ignition OFF, disconnect the X2 harness connector at the K9 BCM.
2. Ignition ON, verify that the child security lockout indicator is OFF.

• If the child security lockout indicator is ON, test the control circuit terminal 6 for a short to ground. If the circuit tests normal, replace the A20 radio/HVAC control.

3. If all circuits test normal, replace the K9 BCM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

Control Module References (Programming and Relearning)for BCM and HVAC control replacement, setup and programming