Door Lock Switch Circuit
Turn ignition off and disconnect ATS ECU connector. Ensure continuity exists between terminal No. 5 (White/Red wire) and ground when either driver's or passenger's door is opened. If continuity exists, replace ATS ECU and retest. If continuity does not exist, repair harness or connectors as necessary. Verify door lock switch operation. See DOOR OPEN DETECTION SWITCH under TESTING ANTI-THEFT SYSTEM COMPONENTS .