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) monitors each door ajar circuit to indicate the status of the door. When the respective door is opened, the door ajar signal circuit is switched to ground by the door lock ajar indicator switch, the BCM detects the drop in voltage in the circuit and 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 when the transmission is shifted out of PARK, the DIC will also send a serial data message to the radio to activate the door ajar audible warning.
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 and Passenger Door Ajar Sw, parameters while opening and closing the driver and front passenger doors. The parameters should change between Door Closed and Door Ajar.
• If the parameters do not change while opening and closing the doors, refer to Front Door Ajar Malfunction.
2. Observe the DIC message while opening and closing the left rear and right rear doors. The message should display Left Rear Door Open or Right Rear Door Open when the doors are open and should not display when the doors are closed.
• If the DIC message does not display when the doors are open or continuously displays when the doors are closed, refer to Rear Door Ajar Malfunction.
Circuit/System Testing
Front Door Ajar Malfunction
1. Ignition OFF, disconnect the harness connector at the appropriate door latch.
2. Test for less than 1 ohm between the ground circuit terminal listed below and ground.
* Driver door latch ground circuit terminal D
* Passenger door latch ground circuit terminal A
• 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.
* Driver door latch signal circuit terminal B
* Passenger door latch signal circuit terminal C
4. Install a 3 A fused jumper wire between the signal circuit terminal and the ground circuit terminal listed below:
* Driver door latch terminals B and D
* Passenger door latch terminals C and A
5. Verify the scan tool Door Ajar Switch 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.
6. If all circuits test normal, test or replace the door latch.
Rear Door Ajar Malfunction
1. Ignition OFF, disconnect the harness connector at the appropriate door jamb switch.
2. Test for less than 1 ohm between the ground circuit terminal A and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify the DIC Door Open message is not displayed.
• If not the specified value, test the signal circuit terminal B for a short to ground, if the circuit tests normal, replace the BCM.
4. Install a 3 A fused jumper wire between the signal circuit terminal B and the ground circuit terminal A. Verify the DIC Door Open message is displayed
• 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 jamb switch.
Component Testing
Front Door Latch
1. Ignition OFF, disconnect the harness connector at the appropriate door latch.
2. Test for infinite resistance between the signal terminal and the ground terminal listed below with the door latch in the open position.
* Driver door latch terminal B and D
* Passenger door latch terminal C and A
• If not the specified value, replace the door latch.
3. Test for less than 2 ohm between the signal terminal and the ground terminal listed below with the door latch in the closed position;
* Driver door latch terminal B and D
* Passenger door latch terminal C and A
• If greater than the specified range, replace the door latch.
Door Jam Switch
1. Ignition OFF, disconnect the harness connector at the appropriate door jamb switch.
2. Test for infinite resistance between the signal terminal B and the ground terminal A with the door jamb switch in the open position
• If not the specified value, replace the door jamb switch.
3. Test for less than 2 ohm between the signal terminal B and the ground terminal A with the door jamb switch in the closed position.
• If greater than the specified range, replace the door jamb switch.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Rear Door Lock Replacement (Rear Door Lock Replacement)
* Front Side Door Window Module Replacement (Service and Repair)
* Control Module References (Programming and Relearning)for BCM replacement, setup and programming