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 ECU-IG, PWR No. 2 and ECU-B fuse. .
Check : continuity of ECU-IG, PWR No. 2 and ECU-B fuse.

OK : Continuity
1. NG : Replace the failure fuse.
2. OK : Go to step 2.
Check voltage between terminals BDR, CPUB, SIG and GND of passenger door ECU connector.
Preparation : turn ignition switch ON.

Check : measure voltage between terminals SIG, and GND.

OK : voltage: 10 - 14 volts

Preparation:
1. Turn ignition switch OFF.
2. Disconnect the passenger door ECU connector.
Check : measure voltage between terminals BDR, CPUB and GND.

OK : voltage: 10 - 14 volts.
1. OK : proceed to next circuit inspection shown on problem symptoms table. See PROBLEM SYMPTOMS .
2. NG : Go to step 3.
Check wire harness and connector between ECU and body ground.
1. NG : repair or replace wire harness or connector.
2. OK : check and repair wire harness and connector between ECU and battery.