Door Ajar Indicator Malfunction

Door Ajar Indicator Malfunction

Diagnostic Instructions

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

Circuit/System Description

The body control module (BCM) receives an input from all four door ajar switches, drivers, passengers, left rear, and right rear. The door ajar switches are normally open when the doors are fully closed. When a door is opened, the door ajar switch contacts close providing a path to ground. The message center on the instrument panel cluster (IPC), illuminates the door ajar message when the one of the doors is open. The IPC receives a serial data message from the BCM, indicating the door ajar status. If this message is displayed and the vehicle speed is greater than 8.1 km/h (5 mph), a chime will sound.

Reference Information
Schematic Reference

* Instrument Cluster Schematics (Instrument Cluster Schematics)
* Door Lock/Indicator Schematics (Door Lock/Indicator Schematics)
* Sliding Door Schematics (Sliding Door Schematics)

Connector End View Reference

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning)for Scan Tool Information

Circuit/System Testing

1. Ignition OFF, disconnect the harness connectors at the two door latch assemblies and the two sliding door jamb switches.
2. Ignition OFF, test for less than 1.0 ohm of resistance between each of the four ground circuits and ground

• If any of the ground circuits are greater than 1.0 ohm, test that ground circuit for an open/high resistance.

3. Verify the scan tool Door Ajar Switch parameters are all closed.

• If not closed, test the appropriate signal circuit for a short to ground. If all circuits test normal, replace the BCM.

4. Install a 3-amp fused jumper one at a time between the four signal circuits and ground. Verify the scan tool Door Ajar Switch parameter is Ajar when each signal circuit is activated.

• If not Ajar, test the appropriate signal circuit for a short to voltage or an open/high resistance. If all circuits test normal, replace the BCM.

5. Ignition OFF, reconnect the harness connectors at the two door latch assemblies, and the two sliding door jamb switches, one at a time. Open and close the door with the reconnected harness. Verify the appropriate scan tool Door Ajar Switches parameter is Ajar when the door is open and closed when the door is closed.

• If not Ajar when open or closed when closed, replace the appropriate door latch assembly or sliding door jamb switch.

6. If all circuits test normal, test or replace the IPC.

Repair Instructions

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

* Front Side Door Lock Replacement (Front Side Door Lock Replacement)
* Sliding Door Jamb Contact Plate Replacement (Service and Repair)
* Control Module References (Programming and Relearning)the IPC replacement, setup, and programming