Slide Door Key Unlock Switch Circuit

Close and unlock slide door with key. Ensure continuity exists between ECU terminals B15 (Blue/Yellow wire) and B4 (Blue/Black wire). If continuity is not present, repair open in unlock switch circuit. If continuity is present, lock slide door with key 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.