Engine Immobiliser System Certification Ecu Power Source Circuit

Securities. Lexus Gs430, Gs300. Uzs190 Grs190
Engine Immobiliser. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUSE (SECURITY)

CHECK WIRE HARNESS (CERTIFICATION ECU - BATTERY AND BODY GROUND)

ENGINE IMMOBILISER SYSTEM - Certification ECU Power Source Circuit


DESCRIPTION

This circuit provides power to operate the certification ECU.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Engine Immobiliser.Engine Immobiliser System.Engine Immobiliser System Certification Ecu Power Source Circuit


INSPECTION PROCEDURE

1.INSPECT FUSE (SECURITY)

  1. Remove the SECURITY fuse from the cowl side junction block RH.

  1. Measure the resistance of the fuse.

    Standard resistance:
    Below 1 Ω


NG
REPLACE FUSE
OK


2.CHECK WIRE HARNESS (CERTIFICATION ECU - BATTERY AND BODY GROUND)
Lexus Gs430, Gs300. Uzs190 Grs190.Engine Immobiliser.Engine Immobiliser System.Engine Immobiliser System Certification Ecu Power Source Circuit

  1. Disconnect the V28 ECU connector.

  1. Measure the resistance and voltage of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Specified Condition
    V28-17 (E) - Body ground
    		Below 1 Ω
    Standard voltage:
    Tester Connection
    		Specified Condition
    V28-1 (+B1) - Body ground
    		10 to 14 V


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE CERTIFICATION ECU