Power Door Locks - Inoperative

TEST DESCRIPTION

Steps 1-4:

Steps 5-13:

Steps 14-24:

The numbers below refer to the step numbers on the diagnostic table.
3. This step determines if there is a lock actuator control circuit of one of the rear doors shorted to ground. This condition could open the RRDR MDL fuse located in the rear fuse block and simultaneously set DTCs U1162 and U1163 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 which could result in the scan tool displaying incorrect lock switch states.
5. This step determines if the lock switch or lock switch circuits are the cause of the malfunction. If the 3 amp jumper fuse opens when the jumper wire is connected, test the switch signal circuits for a short to battery positive 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.

"For the description of RPO code(s) shown in this article or any of the images therein, refer to the RPO code list found at the Vehicle/Application And ID". RPO Codes