Door Ajar Indicator Malfunction
Door Ajar Indicator Malfunction
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.
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) receives a discrete input from the respective door latch assembly to indicate the status of the door. The BCM then communicates this status to the instrument panel cluster (IPC) via a serial data message. The IPC, upon receipt of this serial data message, will illuminate the appropriate ajar message in the driver information center (DIC) and also send a serial data massage to the radio to activate the door ajar audible warning when the transmission is removed from PARK and the vehicle speed is greater then 8 km/h (5 mph).
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
Door Ajar Indicator 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
1. Ignition ON, observe the scan tool Driver Door Ajar Sw parameter while opening and closing the driver door. The parameter should change between Door Closed and Door Ajar
• If the parameter does not change, refer to Driver Door Ajar Malfunction.
2. With the passenger doors closed, observe the scan tool Door Ajar Switch parameter while opening and closing each door. The parameter should change between Door Closed and Door Ajar.
• If the parameter does not change, refer to Passenger Door Ajar Malfunction.
Circuit/System Testing
Driver Door Ajar Malfunction
1. Ignition OFF, disconnect the harness connector at the driver door latch.
2. Test for less than 5 ohms between the ground circuit terminal 8 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify the scan tool Driver Door Ajar Sw parameter is Door Closed.
• If not the specified value, test the signal circuit terminal 6 for a short to ground. If the circuit tests normal, replace the BCM.
4. Install a 3A fused jumper wire between the signal circuit terminal 6 and the ground circuit terminal 8. Verify the scan tool Driver Door Ajar Sw parameter is Door Ajar.
• If not the specified value, test the 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 driver door latch.
Passenger Door Ajar Malfunction
1. Ignition OFF, disconnect the harness connector at the appropriate door latch.
2. Test for less than 5 ohms between the ground circuit terminal listed below and ground:
* Left rear door latch ground circuit terminal 6
* Passenger door latch ground circuit terminal 3
* Right rear 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 scan tool Door Ajar Switch parameter is Door Closed.
• 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 ground circuit terminal 4
* Right rear door latch signal circuit terminal 1
* 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 scan tool Door Ajar Switch parameter is Door Ajar.
* 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
* Passenger door latch signal circuit terminal 1 and ground circuit terminal 3
• If not the specified value, test the 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 assembly.
3. With the switch in the closed position, test for less than 2 ohms 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 Lock Replacement Front Side Door Lock Replacement
* Rear Side Door Lock Replacement Rear Side Door Lock Replacement
* Control Module References Programming and Relearning for BCM replacement, setup, and programming