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 DIAGNOSISBODY & FRAMEDOOR LOCKSANTI-THEFT SYSTEMSYMPTOM TESTSTEST 2: CTD DOES NOT DISARM WITH KEY LOCK
2000 Buick Park Avenue Base, 3.8 1
Test 2: CTD Does Not Disarm With Key Lock
2000 Buick Park Avenue Base, 3.8 1SECTION Test 2: CTD Does Not Disarm With Key Lock
- Turn ignition on. Using scan tool, select Driver Door Module (DDM), data display, and inputs. Observe door lock cylinder switch parameter for each door. If scan tool displays IDLE for both lock switches, go to next step. If scan tool does not display IDLE for any lock switch, go to step 3 .
- Activate outside door locks. Using scan tool, observe door lock parameters. If both switch parameters change, check for intermittent problem. If both switch parameters do not change, go to next step.
- Turn ignition off. Disconnect inoperative door switch. Turn ignition on, engine off. Using scan tool, observe door lock cylinder switch parameter. If scan tool displays IDLE, go to step 6 . If scan tool does not display IDLE, go to next step.
- Check switch wiring between lock switch and door module for short to ground. See WIRING DIAGRAMS . Repair as necessary. If no problem is found, go to next step.
- Check door module connector for poor connections. Repair as necessary. If connections are okay, replace faulty door module. See DOOR MODULE under REMOVAL & INSTALLATION. Recheck system.
- Check door lock switch connector for poor connections. Repair as necessary. If connections are okay, replace faulty door lock switch. See DOOR LOCK SWITCH under REMOVAL & INSTALLATION. Recheck system operation.
RENDER: 1.0x
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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.