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 passenger window switches each provide a 12 V signal to their respective 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 and the voltage within the signal circuit drops. The window switches will detect the voltage drop and will send a serial data message to the body control module which will then send a message to the instrument panel cluster to command the door ajar message.
The driver window motor (AXG) or the driver window switch (AEC) provides a 12V signal to the driver door ajar switch signal circuit. The driver door ajar switch is integral to the driver door latch assembly. When the driver 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 and the voltage within the signal circuit drops. The driver window motor (AXG) or the driver window switch (AEC) will detect the voltage drop and will send a serial data message to the body control module which will then send a message to the instrument panel cluster to command the door ajar message.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics Door Lock/Indicator Schematics
Connector End View Reference
Component Connector End Views Sunshade - Left (DH6)
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 Control Module References for scan tool information
Circuit/System Verification
1. Observe the scan tool Driver Door Ajar Switch parameter while opening and closing the driver door. The parameter should change between Active and Inactive.
• If the value does not change, refer to Driver Door Ajar Switch Malfunction.
2. Observe the scan tool Passenger Door Ajar Switch parameter while opening and closing the front passenger door. The parameter should change between Active and Inactive.
• If the value does not change, refer to Passenger Door Ajar Switch Malfunction.
3. Observe the scan tool Left Rear Door Ajar Switch and Right Rear Door Ajar Switch parameters while opening and closing the left and right rear doors. The value should change between Inactive and Active.
• If a value does not change, refer to Rear Door Ajar Switch Malfunction.
Circuit/System Testing
Driver Door Ajar Switch Malfunction (AEC)
1. Ignition OFF, disconnect the harness connector at the A23D Door Latch Assembly - Driver.
2. Test for less than 10 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 Switch parameter is Inactive.
• If not the specified value, test the signal circuit terminal 6 for a short to ground. If the circuit tests normal, replace the S79D Window Switch- Driver.
4. Install a 3 A fused jumper wire between the signal circuit terminal 6 and ground. Verify the scan tool Driver Door Ajar Switch parameter is Active.
• 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 S79D Window Switch- Driver.
5. If all circuits test normal, test or replace the A23D Door Latch Assembly - Driver.
Driver Door Ajar Switch Malfunction (AXG)
1. Ignition OFF, disconnect the harness connector at the A23D Door Latch Assembly - Driver.
2. Test for less than 10 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 Switch parameter is Inactive.
• If not the specified value, test the signal circuit terminal 6 for a short to ground. If the circuit tests normal, replace the M74D Window Motor - Driver.
4. Install a 3 A fused jumper wire between the signal circuit terminal 6 and ground. Verify the scan tool Driver Door Ajar Switch parameter is Active.
• 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 M74D Window Motor - Driver.
5. If all circuits test normal, test or replace the A23D Door Latch Assembly - Driver.
Passenger Door Ajar Switch Malfunction
1. Ignition OFF, disconnect the harness connector at the A23P Door Latch Assembly - Passenger.
2. Test for less than 10 ohms between the ground circuit terminal 3 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify the scan tool Passenger Door Ajar Switch parameter is Inactive.
• If not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the S79P Window Switch- Passenger.
4. Install a 3 A fused jumper wire between the signal circuit terminal 1 and ground. Verify the scan tool Passenger Door Ajar Switch parameter is Active.
• 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 S79P Window Switch- Passenger.
5. If all circuits test normal, test or replace the A23P Door Latch Assembly - Passenger.
Rear Door Ajar Switch Malfunction
1. Ignition OFF, disconnect the harness connector at the appropriate rear A23 door latch.
2. Test for less than 10 ohms between the ground circuit terminal listed below and ground:
* Left rear door latch ground circuit terminal 8
* 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 appropriate scan tool Rear 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 rear S79 window switch.
* Left rear door ajar switch signal circuit terminal 6
* Right rear door ajar switch signal circuit terminal 1
4. Install a 3 A fused jumper wire between the signal circuit terminal listed below and ground. Verify the scan tool Rear Door Ajar Switch parameter is Active.
* Left rear door ajar switch signal circuit terminal 6
* Right rear door ajar switch signal circuit terminal 1
• If not the specified value, test the signal circuit terminal listed below for an open/high resistance. If the circuit tests normal, replace the S79 window switch.
5. If all circuits tests normal, test or replace the rear A23 door latch.
Component Testing
Static Test
1. Ignition OFF, disconnect the harness connector at the appropriate A23 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 6 and ground terminal 8
* Right rear door latch signal terminal 1 and ground terminal 3
* Passenger door latch signal terminal 1 and ground terminal 3
• If not the specified value, replace the A23 door latch.
3. With the switch in the closed position, test for less than 5 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 6 and ground terminal 8
* Right rear door latch signal terminal 1 and ground terminal 3
* Passenger door latch signal terminal 1 and ground terminal 3
• If greater than the specified range, replace the A23 door latch.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Front Side Door Lock Replacement Front Side Door Lock Replacement
* Rear Side Door Lock Replacement Rear Side Door Lock Replacement
* Front Side Door Window Regulator Motor Replacement Service and Repair
* Control Module References Control Module References for BCM replacement, programming and setup