• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Left Front Door Ajar Switch Signal | 1 | 2 | 2 | -- |
Left Rear Door Ajar Switch Signal | 1 | 2 | 2 | -- |
Right Front Door Ajar Switch Signal | 1 | 2 | 2 | -- |
Right Rear Door Ajar Switch Signal | 1 | 2 | 2 | -- |
Driver Door Latch Low Reference | -- | 2 | 2 | -- |
LR Door Latch Ground | -- | 2 | 2 | -- |
Front Passenger Door Latch Low Reference | -- | 2 | 2 | -- |
RR Door Latch Ground | -- | 2 | 2 | -- |
1. Door Ajar Indicator Always Illuminated 2. Door Ajar Indicator Inoperative |
The driver door switch (DDS) and the passenger door switch (PDS) receive a discrete input from the driver door ajar switch and the passenger door ajar switch respectively. The body control module (BCM) receives discrete inputs from both the left and right rear door ajar switches. The door ajar switches are normally open when the doors are fully closed. When a door is opened, the door ajar switch contacts close providing a path to ground. The instrument panel cluster (IPC) receives a serial data message from the BCM, DDS, or PDS indicating the door ajar status and the driver information center (DIC) located at the bottom of the IPC, illuminates the appropriate door ajar message when one of the doors is open. If this message is displayed and the vehicle speed is greater than 8 km/h (5 mph), a chime will sound.
Door Ajar Indicator Description and Operation
Control Module References for scan tool information
⇒ | If the parameter does not change, refer to Driver Door Ajar Malfunction. |
⇒ | If the parameter does not change, refer to Passenger Door Ajar Malfunction. |
⇒ | If the parameter does not change, refer to Rear Door Ajar Malfunction. |
⇒ | If greater than the specified range, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the DDS. |
⇒ | If not the specified value, test the signal circuit terminal 6 for a short to ground. If the circuit tests normal, replace the DDS. |
⇒ | 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 DDS. |
⇒ | If greater than the specified range, test the low reference circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the PDS |
⇒ | If not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the PDS. |
⇒ | 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 PDS. |
• | Left rear door latch ground circuit terminal 6 |
• | Right rear door latch ground circuit terminal 3 |
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
⇒ | 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 signal circuit terminal 4 |
• | Right rear door latch signal circuit terminal 1 |
• | LR door latch signal circuit terminal 4 and ground circuit terminal 6 |
• | RR 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. |
• | Driver door latch terminal 4 and 6 |
• | Front passenger door latch terminal 1 and 3 |
• | LR door latch terminal 4 and 6 |
• | RR door latch terminal 1 and 3 |
⇒ | If not the specified value, replace the door latch. |
• | Driver door latch terminal 4 and 6 |
• | Front passenger door latch terminal 1 and 3 |
• | LR door latch terminal 4 and 6 |
• | RR door latch terminal 1 and 3 |
⇒ | If greater than the specified range, replace the door latch. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for the DDS, PDS, or BCM replacement, setup, and programming. |