Inspection Procedure

WARNING: This page is about a different car, the 2002 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 : continuity of RAD No.2, WSH, ECU-IG and ECU-B fuse.

OK : continuity.
1. NG : Replace the failure fuse.
2. OK : Go to step 2.
Check voltage between terminals ACC, WIG, IG, BECU and BDR and GND of Body ECU connector.
Preparation : turn ignition switch on.

Check : measure voltage between terminals ACC, WIG, IG and body ground.

OK : voltage: 10 - 14 V.

Preparation : turn the ignition switch off.

Check : measure voltage between terminals BECU, BDR and body ground.

OK Voltage: 10 - 14 V.
1. NG : Proceed to next circuit inspection shown in problem symptoms. See PROBLEM SYMPTOMS .
2. OK go to step 3.
Check wire harness and connector between ECU and body ground . See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS .
1. NG : Repair or replace wire harness or connector.
2. OK : Check and repair wire harness and connector between ECU and battery.