Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

Check ECU-IG1 fuse.
1. NG: Check for short in all the harness and components connected to ECU-IG1 fuse, and repair them.
2. OK: Go to Next Step
Check voltage between terminal IG of Power Seat Control ECU connector and body ground.
PREPARATION:

Remove Power Seat Control ECU with connectors being connected.

CHECK:

Measure voltage between terminal IG of Power Seat Control ECU connector and body ground when ignition switch is ON and OFF.

OK:

Fig 1: Ignition Switch Position Voltage Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Checking Voltage Between Terminal IG Of Power Seat Control ECU Connector And Body Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: Proceed to next circuit inspection shown on problem symptom table (See PROBLEM SYMPTOMS TABLE ).
2. NG: Check and repair harness or connector between Power Seat Control ECU and battery.