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 (ACC, ECU-IG RH, MPX-B)
(a) Disconnect the ACC and ECU-IG RH fuses from the main body ECU RH.
(b) Disconnect the MPX-B fuse from the engine room No. 2 relay block.
(c) 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 K66 ECU connector.
(b) Measure the resistance and voltage of the wire harness side connector.
Standard resistance:






Standard voltage:






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