Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage between terminal +B of ECU connector and ground.
PREPARATION:

Remove the wireless door lock ECU connector being connected.

CHECK:

Measure voltage between terminal +B of wireless door lock ECU connector and ground.

OK:
1. Voltage: 10 - 14 V
Fig 1: Measuring Voltage Between Terminal +B Of Wireless Door Lock ECU Connector & Ground
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1. OK : Proceed to next circuit inspection shown in problem symptom table (See PROBLEM SYMPTOMS TABLE ).
2. NG : GO TO NEXT STEP
Check wire harness and connector between wireless door lock ECU and body ECU (Main) (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
1. NG : Repair or replace harness or connector.
2. OK : Proceed to next circuit inspection shown in problem symptom table (See PROBLEM SYMPTOMS TABLE ).