Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage between terminals IG/ACC and GND1/GND2 of passenger side J/B ECU connectors.
PREPARATION:

Turn the ignition switch ON.

CHECK:

Measure the voltage between terminals IG/ACC and GND1/GND2 of the passenger side J/B ECU connectors.

OK:

Voltage: 9 to 14 V
1. OK : Proceed to next circuit inspection shown in problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
2. NG : Go to next step.
Check AM1, GAUGE and ACC fuses.
PREPARATION:

Remove the AM1, GAUGE and ACC fuses from the driver side J/B.

CHECK:

Measure the resistance of the fuse.

Fig 1: Identifying Driver Side J/B
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK:

Resistance: Below 1 Ω
1. NG : Replace faulty fuse.
2. OK : Go to next step.
Check ignition switch (See INSPECTION ).
1. NG : Replace ignition switch.
2. OK : Go to next step.
Check for harness and connector between passenger side J/B ECU and body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
1. NG : Repair or replace harness and connector.
2. OK : Check and repair harness and connector between passenger side J/B ECU and battery (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).