Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota MR2. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage between terminal B of body ECU connector and body ground.
PREPARATION:
1. Remove the instrument panel. See INSTRUMENT PANEL .
2. Disconnect the B5 connector from the body ECU.
CHECK:

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

Fig 1: Checking ECU Terminal For Voltage
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: = Voltage: 9-14 V
1. OK: Proceed to next circuit inspection shown in PROBLEM SYMPTOMS .
2. NG: Go to next step.
Check DOOR fuse.
PREPARATION:

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

Fig 2: Locating DOOR Fuse In Relay Block No. 3
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK:

Check the continuity of the DOOR fuse.

OK = Continuity
1. OK: Go to next step.
2. NG: Check for short in all harness and components connected to DOOR fuse.
Check harness and connector between body ECU and body ground.
1. OK: Check and repair harness or connector between body ECU and battery.
2. NG: Repair or replace harness or connector.