Inspection Procedure

Check voltage between terminal B of body ECU connector and body ground.
PREPARATION:
1. Remove the instrument panel (See REMOVAL ).
2. Disconnect the B5 connector from the body ECU.
  
  Fig 1: Checking Voltage Between Terminal B Of Body ECU Connector And Body Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK:

Measure the voltage between terminal B of the body ECU connector and body ground.

OK:

Voltage: 9 - 14 V

OK: Proceed to next circuit inspection shown on problem symptoms table (See PROBLEM SYMPTOMS TABLE ).

NG: Go to next step.
Check DOOR fuse.
PREPARATION:

Remove the DOOR fuse from the R/B No. 3.

CHECK:

Check the continuity of the DOOR fuse.

OK:

Continuity

Fig 2: Identifying Door Fuse
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Check for short in all harness and components connected to DOOR fuse.

OK: Go to next step.
Check harness and connector between body ECU and body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
NG: Repair or replace harness or connector.

OK: Check and repair harness or connector between body ECU and battery (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).