Inspection Procedure

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

Check RAD No.2, WSH, ECU-IG and ECU-B fuse.
CHECK:

Check continuity of RAD No.2, WSH, ECU-IG and ECU-B fuse.

OK:
1. Continuity
1. NG : Replace the failure fuse.
2. OK : Go To Next Step.
Check voltage between terminals ACC, WIG, IG, BECU and BDR and GND of Body ECU connector.
PREPARATION:

Turn The ignition switch ON.

CHECK:

Measure voltage between terminals ACC, WIG, IG and body ground.

OK:
1. Voltage: 10 - 14 V
PREPARATION:

Turn the ignition switch OFF.

CHECK:

Measure voltage between terminals BECU, BDR and body ground.

OK:
1. Voltage: 10 - 14 V
1. OK : Proceed to next circuit inspection shown in PROBLEM SYMPTOMS TABLE .
2. NG : Go To Next Step.
Check wire harness and connector between ECU and body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
1. NG : Repair or replace wire harness or connector.
2. OK : Proceed to next circuit inspection shown in PROBLEM SYMPTOMS TABLE .