Gateway ECU Power Source Circuit

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: Gateway ECU Power Source Circuit

Gateway ECU Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the gateway ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (ECU-IG, ACC, ECU-B)
(a) Disconnect the ECU-IG, ECU-B and ACC fuses from the driver side junction block.
(b) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.

2. CHECK WIRE HARNESS (GATEWAY ECU - BATTERY AND BODY GROUND)




(a) Disconnect the G1 ECU connector.
(b) Measure the resistance of the wire harness side connector.
Standard resistance:





(c) Measure the voltage of the wire harness side connector.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE