Inspection Procedure

Check voltage between terminals +B/BDL and GND1/GND2 of passenger side J/B ECU connectors.
PREPARATION:
1. Turn the ignition switch OFF.
2. Disconnect the passenger side J/B ECU connectors.
CHECK:

Measure the voltage between terminals +B/BDL and GND1/GND2.

OK:

Voltage: 9 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 DOME, CUT and DOOR fuses.
PREPARATION:

Remove the DOME, CUT and DOOR fuses from the engine room J/B.

CHECK:

Measure the resistance of the fuse.

OK:

Resistance: Below 1 Ω

Fig 1: Identifying Engine Room J/B And Driver Side J/B
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG : Replace faulty fuse.
2. OK : Go to next step.
Check for harness and connector between passenger side J/B ECU and body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
1. NG : Repair or replace harness and connector.
2. OK : Check and repair harness and connector between passenger side J/B ECU and battery (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).