Inspection Procedure

Remove the door trim panel and service hole cover. See DOOR TRIM PANEL (FRONT) under REMOVAL & INSTALLATION in appropriate POWER DOOR LOCKS & LIFTGATE article in DOOR LOCKS & ANTI-THEFT SYSTEMS. Disconnect the door key lock and unlock switch connector and check continuity between terminals.

Connect the positive (+) lead to terminal No. 2 and the negative (-) lead to terminal No. 1 . See CONNECTOR IDENTIFICATION .
Connect the positive (+) lead to terminal No. 3 and the negative (-) lead to terminal No. 1.

See INSPECTING DOOR KEY LOCK & UNLOCK SWITCH CONTINUITY table. If continuity is OK, go to the next step. If continuity is not good replace the door key lock and unlock switch located in the key cylinder. See DOOR LOCK ASSEMBLY (FRONT) under REMOVAL & INSTALLATION in appropriate POWER DOOR LOCKS & LIFTGATE article in DOOR LOCKS & ANTI-THEFT SYSTEMS.

INSPECTING DOOR KEY LOCK & UNLOCK SWITCH CONTINUITY

Switch Position	Tester Connection	Specified Condition
Lock Side	2 - 3	Continuity
Unlock Side	1 - 3	Continuity
OFF	.....	No Continuity

Check the harness and connectors between the theft deterrent ECU and door key lock and unlock switch, door key lock and unlock switch and body ground. For 2001 vehicles, see ANTI-THEFT in 2001 SYSTEM WIRING DIAGRAMS article in ELECTRICAL. For 2002 vehicles, see ANTI-THEFT in 2002 SYSTEM WIRING DIAGRAMS article in ELECTRICAL. If the results are OK, check and replace the theft deterrent ECU. When there is a malfunction that the anti-theft system cannot be set, proceed to the next circuit inspection of the problem symptom. See PROBLEM SYMPTOM INDEX table. If the results are not good, repair or replace the harness or connector.