Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus ES 300 and 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.

For inspection procedure, see Fig 1. If inspection results in replacement of the body ECU, see MULTIPLEX COMMUNICATION SYSTEM article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT.

Fig 1: Inspecting Passenger's Rear Door Courtesy Switch Circuit (Power Door Lock Control System)