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 does not detect voltage in the child door lock indicator circuit when the child door locks have been commanded.

Action Taken When the DTC Sets

The indicator will be continuously illuminated.

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 50 ignition cycles.

Reference Information
Schematic Reference

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

Component Connector End Views (Connector Views)
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, command the Child Security Lock Indicator ON and OFF with a scan tool. The child door lockout indicator should turn ON and OFF while changing between the commanded states.

Component Testing

1. Ignition OFF, disconnect the X1 harness connector at the radio/HVAC display.
2. Connect a test lamp between the control circuit terminal 6 and B+.
3. Ignition ON, command the Child Security Lock Indicator ON and OFF with a scan tool. The test lamp should turn ON and OFF while changing between the commanded states.

• If 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 BCM.

• If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM

4. If all circuit test normal, replace the radio/HVAC display.

Repair Instructions

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

Control Module References (Programming and Relearning) for BCM and radio/HVAC display replacement, setup and programming