Power Door Locks - Inoperative

TEST DESCRIPTION

Steps 1-4:

Steps 5-10:

Steps 11-24:

The numbers below refer to the step numbers on the diagnostic table.
3. This step determines if there is a rear door lock actuator control circuit shorted to ground, a condition which could open the RRDR MDL fuse located in the rear fuse block and set DTCs U1162 and U1163 simultaneously current when the rear door lock actuator is actuated.
4. Turning ON the headlamps switch in this step eliminates the possibility of the inoperative door lock switch finding an alternative path to ground through the switch illumination circuit, a condition which could result in the scan tool displaying incorrect lock switch states.
5. This step begins to determine if the lock switch or lock switch circuits are the cause of the malfunction. If the 3 amp jumper wire fuse opens when the jumper wire is connected, test the appropriate lock switch signal circuits for a short to battery voltage.
7. This step determines if the door lock actuator unlock circuit may be the cause of the malfunction. If the test lamp is already illuminated before operating the lock switch to Unlock, test the door lock actuator unlock circuit for a short to battery voltage.
8. This step determines if the door lock actuator lock circuit may be the cause of the malfunction. If the test lamp is already illuminated before operating the lock switch to Lock, test the door lock actuator lock circuit for a short to battery voltage.
16. This step directs you to, either inspect for poor connections at the passenger door module, or, at the driver door switch assembly as a pre-requisite to replacing the passenger door module or driver door switch assembly. This is because lock switch signals for the driver door are detected and processed by the driver door switch assembly, while lock switch signals for the passenger door are detected and processed by the passenger door module.
21. This step directs you to, either replace the passenger door module or driver door switch assembly. This is because lock switch signals for the driver door are detected and processed by the driver door switch assembly, while lock switch signals for the passenger door are detected and processed by the passenger door module.