Passenger's Door Key Unlock Switch Circuit

Turn ignition off and disconnect ATS ECU connector. Unlock passenger's door with key. Ensure continuity exists between ground and ATS ECU connector terminal A15 (with power door locks, White/Blue wire) or No. 10 (without power door locks, White/Blue wire). If continuity is not present, repair open in unlock switch circuit. If continuity is present, lock passenger's door and ensure continuity is not present. If continuity is present, repair short in unlock switch circuit. If continuity is not present, replace ATS ECU and retest.