Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2000PARK AVENUE BASE, 3.8 1REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSPOWER DOOR LOCK SYSTEMSYMPTOM TESTSTEST D: POWER DOOR LOCK INOPERATIVE
2000 Buick Park Avenue Base, 3.8 1
Test D: Power Door Lock Inoperative
2000 Buick Park Avenue Base, 3.8 1SECTION Test D: Power Door Lock Inoperative
- Perform DIAGNOSTIC SYSTEM CHECK under DIAGNOSTIC TESTS. Go to next step.
- Install scan tool. Disconnect inoperative door lock actuator harness connector. Connect test light between the inoperative door lock harness connector C2 terminals "A" and "B". Turn ignition on. Using scan tool, choose suspect door lock in DOOR LOCK TEST application of OUTPUT CONTROL application of SPECIAL FUNCTIONS in DRIVER DOOR MODULE (DDM) data list. Command inoperative door lock to lock and unlock. If test light does not flash once upon commanding LOCK and once upon commanding UNLOCK, go to next step. If test light flashes once upon commanding LOCK and once upon commanding UNLOCK, go to step 5 .
- Test inoperative door lock actuator circuits for open, short to ground, and shorts to each other. See DOOR LOCK ACTUATOR WIRE COLORS table. If problem was not found, go to next step. If problem was found, repair as necessary, and then go to step 8 .
- Inspect for poor connection/terminal tension at harness connector of door module associated with inoperative door lock. If problem was not found, go to step 6 . If problem was found, repair as necessary, and then go to step 8 .
- Inspect for poor connections/terminal tension at harness connector of inoperative door lock actuator. If problem was not found, go to step 7 . If problem was found, repair as necessary, and then go to step 8 .
- Replace inoperative door module. See DOOR CONTROL MODULE under REMOVAL & INSTALLATION. Go to step 8 .
- Replace inoperative door lock actuator. See DOOR LOCK ACTUATOR under REMOVAL & INSTALLATION. Go to next step.
- Operate the system in order to verify the repair.
DOOR LOCK ACTUATOR WIRE COLORS
| Door Actuator | Wire Color | |
|---|---|---|
| Left Front | ||
| Lock | Gray | |
| Unlock | Tan | |
| Right Front | ||
| Lock | Light Green/White | |
| Unlock | Tan | |
| Left Rear | ||
| Lock | Red | |
| Unlock | Pink | |
| Right Rear | ||
| Lock | Purple/White | |
| Unlock | Tan/Black | |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.