Inspection Procedure

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

Check ECU-ACC, DOOR No. 1, DOOR No. 2, ECU-IG No. 2, ECU-B and DCC fuse.
CHECK:

Check continuity of ECU-ACC, DOOR No. 1, DOOR No. 2, ECU-IG No. 2, ECU-B and DCC fuse.

OK: Continuity

NG: Replace the failure fuse.

OK: Go to next step.
Check voltage between terminals ACC, B, BDR 1, BDR 2, SIG and GND or GND2 of Body ECU connector.
PREPARATION:

Turn ignition switch ON.

CHECK:

Measure voltage between terminals ACC, SIG, BDR 1, and GND, GND2.

OK: Voltage: 10-14V

PREPARATION:
1. Turn ignition switch OFF.
2. Disconnect the Body ECU connector.
CHECK:

Measure voltage between terminals B, BDR 2, BSUB and GND, GND2.

OK: Voltage: 10-14V

OK: Proceed to next circuit inspection shown on problem symptoms table (See PROBLEM SYMPTOMS TABLE ).

NG: Go to next step.
Check wire harness and connector between Body ECU and body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
NG: Repair or replace wire harness or connector.

OK: Check and repair wire harness and connector between Body ECU and battery (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).