Door Ajar Indicator Malfunction
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Door Ajar Indicator Malfunction
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Diagnostic Fault Information
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Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Left Front Door Ajar Switch Signal
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1
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2
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2
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-
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Left Rear Door Ajar Switch Signal
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1
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2
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2
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-
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Right Front Door Ajar Switch Signal
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1
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2
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2
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-
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Right Rear Door Ajar Switch Signal
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1
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2
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2
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-
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Driver Door Latch Ground
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-
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2
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-
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-
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Passenger Door Latch Ground
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-
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2
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-
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-
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Left Rear Door Latch Ground
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-
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2
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-
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-
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Right Rear Door Latch Ground
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-
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2
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-
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-
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1. Ajar Indicator Always Illuminated
2. Ajar Indicator Inoperative
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Circuit/System Description
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Each front window motor monitors the ajar signal circuit for its respective front door ajar switch. If a front door is open, contacts within the door latch close and cause the voltage within the ajar circuit to drop. The front window motor will detect the drop in voltage and will then send a serial data message to the body control module (BCM), the BCM in turn will then send a serial data message to the driver information center which will display the appropriate door ajar message.
Each rear window switch monitors the ajar signal circuit for its respective rear door ajar switch. If a rear door is open, contacts within the door latch close and cause the voltage within the ajar circuit to drop. Therear window switch will detect the drop in voltage and will then send a serial data message to the body control module (BCM), the BCM in turn will then send a serial data message to the driver information center which will display the appropriate door ajar message.
Schematic Reference
Door Lock/Indicator Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Door Ajar Indicator Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References
for scan tool information
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Circuit/System Verification
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1.
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Ignition ON, observe the scan tool Driver Door Ajar Switch parameter while opening and closing the driver door. The parameter should change between Active and Inactive.
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2.
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If the value does not change, refer to Driver Door Ajar Switch Malfunction.
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3.
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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.
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4.
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If the value does not change, refer to Passenger Door Ajar Switch Malfunction.
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5.
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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 parameters should change between Inactive and Active.
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6.
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If the appropriate value does not change, refer to Rear Door Ajar Switch Malfunction.
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Driver Door Ajar Switch Malfunction
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1.
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Ignition OFF, disconnect the harness connector at the A23D door latch assembly-driver.
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2.
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Test for less than 10 Ω between the ground circuit terminal listed below and ground:
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Left hand drive terminal 8
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•
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Right hand drive terminal 3
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3.
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If greater than the specified range, test the ground circuit for an open/high resistance.
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4.
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Ignition ON, verify the scan tool Driver Door Ajar Switch parameter is Inactive.
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5.
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If not the specified value, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the M74D window motor - driver.
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Left hand drive terminal 2
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Right hand drive terminal 1
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6.
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Install a 3 A fused jumper wire between the signal circuit terminal listed below and ground. Verify the scan tool Driver Door Ajar Switch parameter is Active.
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Left hand drive terminal 2
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Right hand drive terminal 1
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7.
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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.
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8.
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If all circuits test normal, test or replace the A23D door latch assembly - driver.
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Passenger Door Ajar Switch Malfunction
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1.
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Ignition OFF, disconnect the harness connector at the A23P door latch assembly - passenger.
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2.
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Test for less than 10 Ω between the ground circuit terminal listed below and ground.
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Left hand drive terminal 3
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Right hand drive terminal 8
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3.
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If greater than the specified range, test the ground circuit for an open/high resistance.
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4.
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Ignition ON, verify the scan tool Passenger Door Ajar Switch parameter is Inactive.
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5.
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If not the specified value, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the S79P window switch-passenger.
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Left hand drive terminal 1
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Right hand drive terminal 6
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6.
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Install a 3 A fused jumper wire between the appropriate signal circuit terminal listed below and ground. Verify the scan tool Passenger Door Ajar Switch parameter is Active.
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Left hand drive terminal 1
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Right hand drive terminal 6
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7.
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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.
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8.
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If all circuits test normal, test or replace the A23P door latch assembly - passenger.
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Rear Door Ajar Switch Malfunction
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1.
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Ignition OFF, disconnect the harness connector at the appropriate rear door latch.
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2.
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Test for less than 10 Ω between the ground circuit terminal listed below and ground:
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Left rear door latch ground circuit terminal 8
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Right rear door latch ground circuit terminal 3
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3.
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If greater than the specified range, test the ground circuit for an open/high resistance.
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4.
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Ignition ON, verify the appropriate scan tool Rear Door Ajar Switch parameter is Inactive.
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5.
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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 rear window switch.
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Left rear door ajar switch signal circuit terminal 6
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Right rear door ajar switch signal circuit terminal 1
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6.
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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.
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Left rear door ajar switch signal circuit terminal 6
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Right rear door ajar switch signal circuit terminal 1
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7.
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If not the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the rear window switch.
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8.
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If all circuits tests normal, test or replace the rear door latch.
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Static Test
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1.
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Ignition OFF, disconnect the harness connector at the appropriate door latch.
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2.
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With the switch in the open position, test for infinite resistance between the signal and the ground terminals listed below:
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Driver door latch signal terminal 6 and ground terminal 8
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Left rear door latch signal terminal 6 and ground terminal 8
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Right rear door latch signal terminal 1 and ground terminal 3
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Passenger door latch signal terminal 1 and ground terminal 3
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3.
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If not the specified value, replace the door latch.
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4.
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With the switch in the closed position, test for less than 5 Ω between the signal and the ground terminals listed below:
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Driver door latch signal terminal 6 and ground terminal 8
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Left rear door latch signal terminal 6 and ground terminal 8
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Right rear door latch signal terminal 1 and ground terminal 3
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Passenger door latch signal terminal 1 and ground terminal 3
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5.
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If greater than the specified range, replace the door latch.
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Perform the
Diagnostic Repair Verification
after completing the repair.
