Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

Check RAD NO. 2, ECU-IG and ECU-B fuses.
CHECK:

Check the resistance of RAD NO. 2, ECU-IG and ECU-B fuses.

OK:

Below 1 Ω
1. NG: Replace failure fuse.
2. OK: Go to next step
Check voltage between terminals ACC, IG, BECU or BDR and GND of body ECU connector.
PREPARATION:

Turn the ignition switch ON.

CHECK:

Measure voltage between terminals ACC or IG of the ECU connector and body ground.

OK:

Voltage: 10 to 14 V

PREPARATION:

Turn the ignition switch OFF.

CHECK:

Measure voltage between terminals BECU or BDR of the ECU connector and body ground.

OK:

Voltage: 10 to 14 V
1. OK: Proceed to next circuit inspection shown on PROBLEM SYMPTOMS TABLE .
2. 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 ).
1. NG: Repair or replace wire harness and connector.
2. OK: Proceed to next circuit inspection shown on PROBLEM SYMPTOMS TABLE .