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 position sensor.
CHECK:

Measure voltage between terminal O/P of Power Seat Control ECU and body ground with connector being connected.

OK:

Fig 1: Position Sensor Voltage Chart
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Fig 2: Checking Position Sensor
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1. OK: Proceed to next circuit inspection shown on problem symptom table (See PROBLEM SYMPTOMS TABLE ).
2. NG: Go to Next Step
Check harness and connectors between Power Seat Control ECU and position sensors (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
1. NG: Repair or replace harness or connectors.
2. OK: Proceed to next circuit inspection shown on problem symptom table (See PROBLEM SYMPTOMS TABLE ).