Inspection Procedure

Check voltage between terminals 1I-2/1L-20 and 1J-8 of body ECU connector.
Preparation:

Turn the ignition switch ON.

Check:

Measure the voltage between terminals 1I-2/1L-20 and 1J-8 of the body ECU connector.

OK:

Voltage: 9 - 14 V
1. OK: Proceed to next circuit inspection shown in PROBLEM SYMPTOMS TABLE .
2. NG: Go to next step.
Check ECU-IG and ACC fuses.
Preparation:

Remove the ECU-IG and ACC fuses from the J/B No. 1.

Fig 1: Identifying ECU-IG Fuse & ACC Fuse
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check:

Check the continuity of the ECU-IG and ACC fuses.

OK:

Continuity
1. NG: Replace faulty fuse.
2. OK: Go to next step.
Check Ignition Switch. See IGNITION SWITCH .
1. NG: Replace ignition switch.
2. OK: Go to next step.
Check for harness and connector between body ECU and body ground. See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .
1. NG: Repair or replace harness or connector.
2. OK: Check and repair harness or connector between body ECU and battery. See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .