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) provide an overview of each diagnostic category.
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) receives a discrete input from the driver door ajar switch, the passenger door ajar switches, and the liftgate ajar switch. 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 driver information center (DIC) located at the bottom of the instrument panel cluster (IPC), illuminates the appropriate door ajar message when 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 km/h (5 mph), a chime will sound.
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
Door Ajar Indicator Description and Operation (Description and Operation)
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)
Circuit/System Verification
Ignition ON, observe the door ajar indicator on the I/P while opening and closing each door. The indicator should turn ON and OFF when opening and closing each door.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate door latch.
2. Test for less than 1.0 ohm between the ground circuit terminal listed below and ground.
* Left rear door latch ground circuit terminal 6
* Right rear door latch ground circuit terminal 3
* Driver door latch ground circuit terminal 8
* Front passenger door latch ground circuit terminal 3
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify the door ajar indicator on the I/P is not illuminated.
• If not the specified value, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the BCM.
* Left rear door latch signal circuit terminal 4
* Right rear door latch signal circuit terminal 1
* Driver door latch signal circuit terminal 6
* Front passenger door latch signal circuit terminal 1
4. Install a 3A fused jumper wire between the signal circuit terminal and the ground circuit terminal listed below. Verify the door ajar indicator on the I/P is illuminated.
* Left rear door latch signal circuit terminal 4 and ground circuit terminal 6
* Right rear door latch signal circuit terminal 1 and ground circuit terminal 3
* Driver door latch signal circuit terminal 6 and ground circuit terminal 8
* Front passenger door latch signal circuit terminal 1 and ground circuit terminal 3
• If not the specified value, test the appropriate signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
5. If all circuits test normal, test or replace the door latch.
Component Testing
1. Ignition OFF, disconnect the harness connector at the appropriate door latch.
2. With the switch in the open position, test for infinite resistance between the signal and the ground terminals listed below:
* Driver door latch signal terminal 6 and ground terminal 8
* Left rear door latch signal terminal 4 and ground terminal 6
* Right rear door latch signal terminal 1 and ground terminal 3
* Front passenger door latch signal terminal 1 and ground terminal 3
• If not the specified value, replace the door latch.
3. With the switch in the closed position, test for less than 1 ohm between the signal and the ground terminals listed below:
* Driver door latch signal terminal 6 and ground terminal 8
* Left rear door latch signal terminal 4 and ground terminal 6
* Right rear door latch signal terminal 1 and ground terminal 3
* Front passenger door latch signal terminal 1 and ground terminal 3
• If greater than the specified range, replace the door latch.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Front Side Door Latch Replacement (Service and Repair)
* Rear Side Door Latch Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for BCM replacement, setup, and programming