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 interior rear door handles 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 when commanded by the BCM, 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 Fuel Pump and Level Sensor Assembly

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 Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.

2. Verify the function of the child lockout indicator when commanding the Child Lockout Indicator ON and OFF with a scan tool.

• If the child lockout indicator is always ON or always OFF
Refer to Circuit/System Testing - Lockout Indicator Malfunction.

• If the child lockout indicator turns ON and turns OFF

3. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the X1 harness connector at the S48E Multifunction Switch-Center Console. Ignition ON

2. Connect a test lamp between the control circuit terminal 6 and B+.

3. Verify the test lamp turns ON and OFF when commanding the Child Lockout Indicator ON and OFF with a scan tool.

• If the test lamp is always OFF

1. Ignition OFF, disconnect the harness connector at the K9 Body Control Module, ignition ON.

2. Test for less than 1 V between the control circuit and ground.

• If 1 V or greater, repair the short to voltage on the circuit.

• If less than 1 V

3. Ignition OFF.

4. Test for less than 2 ohms in the control circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the K9 Body Control Module.

• If the test lamp is always ON

1. Ignition OFF, disconnect the harness connector at the K9 Body Control Module.

2. Test for infinite resistance between the control circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance, replace the K9 Body Control Module.

• If the test lamp turns ON and OFF

4. Test or replace the S48E Multifunction Switch-Center Console.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair procedure.

* Front Floor Console Multifunction Switch Replacement Front Floor Console Multifunction Switch Replacement

* Control Module References Control Module References for BCM replacement, programming and setup