Inspection Procedure

Check PWR No. 5, ECU-B, AM1 and ECU-IG fuse.
CHECK:

Check continuity of the PWR No. 5, ECU-B, AM1 and ECU-IG fuse.

OK:

Continuity
1. NG: Replace the faulty fuse.
2. OK: Go to next step.
Check voltage between terminals, SIG, BDR, BECU and GND of back door ECU connector.
PREPARATION:
1. Turn the ignition switch ON.
2. Disconnect the back door ECU connector.
CHECK:

Measure the voltage between terminals SIG, and GND of the back door ECU of the wire harness connector.

OK:

Voltage: 10 to 14 V

PREPARATION:

Turn the ignition switch OFF.

CHECK:

Measure the voltage between terminals BDR, BECU and GND of the back door ECU of the wire harness connector.

OK:

Voltage: 10 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 wire harness and connector between back door ECU and battery (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
1. NG: Repair or replace wire harness or connector.
2. OK: Go to next step.
Check wire harness and connector between back door ECU and body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
1. NG: Repair or replace wire harness or connector.
2. OK: Proceed to next circuit inspection shown in problem symptoms table (See PROBLEM SYMPTOMS TABLE ).