Inspection Procedure

Check voltage between terminals IG/ACC and GND1/GND2 of passenger side J/B ECU connector.
PREPARATION:

Turn the ignition switch ON.

CHECK:

Measure the voltage between terminals IG/ACC and GND1/GND2 of passenger side J/B ECU connector.

OK:

Voltage: 9 - 14 V

OK: Proceed to next circuit inspection shown in (See page PROBLEM SYMPTOMS TABLE ).

NG: Go To Next Step.
Check AM1, GAUGE and ACC fuses.

Fig 1: Identifying AM1, Gauge & ACC Fuses
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

PREPARATION:

Remove the AM1, GAUGE and ACC fuses from the driver side J/B.

CHECK:

Check the continuity of the AM1, GAUGE and ACC fuses.

OK:

Continuity

NG: Replace faulty fuse.
Check ignition switch (See INSPECTION ).
NG: Replace ignition switch.

OK: Go To Next Step.
Check for harness and connector between passenger side J/B ECU and body ground (See page HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
NG: Repair or replace harness or connector.

OK Check and repair harness or connector between passenger side J/B ECU and battery (See page HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).