Left Front Door Unlock Detection Switch Circuit

Verify door unlock detection switch operation. See DOOR UNLOCK DETECTION SWITCH  under TESTING ANTI-THEFT SYSTEM COMPONENTS. Turn ignition off and disconnect ATS ECU connector. Close and unlock left front door. Ensure continuity between ground and ATS ECU connector terminal No. 3 (without power locks, Pink/Blue wire). If continuity is present, go to next step. If continuity is not present, repair open in harness or connectors as necessary.