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 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: Checking Voltage Between Terminal +B Of ECU Connector And Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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 ).