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 driver window motor and passenger window motor each receive a discrete input from their respective door ajar switch signal circuits. The body control module (BCM) receives discrete inputs from each of the rear door ajar switch signal circuits. The door ajar switches are integral to each door latch assembly. When a door is opened, the normally open door ajar switch closes. With the door ajar switch closed, ground is provided to the door ajar switch signal circuit. The window motors and/or BCM interprets this and communicates via serial data with the instrument panel cluster.
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 (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
Ignition ON, observe the scan tool Driver Door Ajar Switch parameter, the Passenger Door Ajar Switch parameter, the Left Rear Door Ajar Switch parameter and the Right Rear Door Ajar Switch parameter while opening and closing each door. Each parameter for each door should change between Active and Inactive
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate A23 door latch assembly.
2. Test for less than 10 ohm between the ground circuit terminal listed below and ground:
* A23D door latch assembly-driver terminal 8
* A23P door latch assembly-passenger terminal 3
* A23LR door latch assembly-left rear terminal 8
* A23RR door latch assembly-right rear terminal 3
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify the appropriate scan tool Door Ajar Switch parameter is Inactive.
• If not the specified value, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the appropriate S79 window switch.
* A23D door latch assembly-driver terminal 6
* A23P door latch assembly-passenger terminal 1
* A23LR door latch assembly-left rear terminal 6
* A23RR door latch assembly-right rear terminal 1
4. Install a 3 A fused jumper wire between the signal circuit terminal listed below and ground. Verify the scan tool Door Ajar Switch parameter is Active.
* A23D door latch assembly-driver terminal 6
* A23P door latch assembly-passenger terminal 1
* A23LR door latch assembly-left rear terminal 6
* A23RR door latch assembly-right rear terminal 1
• If not the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace theS79 window switch.
5. If all circuits tests normal, test or replace the A23 door latch assembly.
Component Testing
Static Test
1. Ignition OFF, disconnect the harness connector at the appropriate A23 door latch assembly.
2. With the switch in the open position, test for infinite resistance between the signal terminal and the ground terminal listed below:
* A23D door latch assembly-driver terminal 6 and terminal 8
* A23LR door latch assembly-left rear terminal 6 and terminal 8
* A23RR door latch assembly-right rear terminal 1 and terminal 3
* A23P door latch assembly-passenger terminal 1 and terminal 3
• If not the specified value, replace the door latch.
3. With the switch in the closed position, test for less than 5 ohm between the signal terminal and the ground terminal listed below:
* A23D door latch assembly-driver terminal 6 and terminal 8
* A23LR door latch assembly-left rear terminal 6 and terminal 8
* A23RR door latch assembly-right rear terminal 1 and terminal 3
* A23P door latch assembly-passenger terminal 1 and 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)
* Front Side Door Window and Multifunction Switch Replacement (Front Side Door Window and Multifunction Switch Replacement)
* Front Side Door Window Switch Replacement (Front Side Door Window Switch Replacement)
* Rear Side Door Window Switch Replacement (Rear Side Door Window Switch Replacement)