Combination Meter ECU Power Source Circuit

Check fuses (GAUGE, MPX-B and SRS-B fuse).
NG: Replace fuse.

OK: Go to next step
Check voltage between terminals A15, A16, A17 and A19 of combination meter connector.
PREPARATION:
1. Remove combination meter.
2. Disconnect the combination meter connector.
CHECK:

Measure voltage between terminals A15 and A19 of combination meter connector.

OK:
1. Voltage: 10-14 V
CHECK:

Measure voltage between terminals A16 and A19 of combination meter connector.

OK:
1. Voltage: 10-14 V
CHECK:

Measure voltage between terminals A17 and A19 of combination meter connector.

OK:
1. Voltage: 10-14 V
Fig 1: Identifying Combination Meter Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Proceed to next circuit inspection shown in PROBLEM SYMPTOMS TABLE .

NG: Go to next step
Check for open in harness and connector between terminal A19 of combination meter 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 and connector between combination meter and battery.