Trouble Shooting

NOTE: Body control system is an integral part of multiplex control system. Before attempting to diagnose any body control systems, ensure body control ECU is able to communicate with rest of multiplex control system. See MULTIPLEX CONTROL SYSTEMS - AVALON article.

Trouble shooting is available for the following systems: ignition switch and key unlock warning, headlight and taillights, interior lights and auto turn off, combination meter, power windows and door locks, trunk opener, wireless door lock control, power mirrors and horn. For specific symptoms and diagnostic testing procedures, see SYMPTOM TESTS .