Engine Immobiliser System (For 4Gr-Fse) Id Code Box Power Source Circuit

Securities. Lexus Is250, Is220D. Gse20 Ale20
Engine Immobiliser. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUSE (SECURITY)

CHECK HARNESS AND CONNECTOR (ID CODE BOX - BATTERY)

CHECK HARNESS AND CONNECTOR (ID CODE BOX - BODY GROUND)

ENGINE IMMOBILISER SYSTEM (for 4GR-FSE) - ID Code Box Power Source Circuit


DESCRIPTION

This circuit provides power to operate the ID code box.

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Engine Immobiliser.Engine Immobiliser System (For 2Ad-Fhv).Engine Immobiliser System (For 4Gr-Fse) Id Code Box 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 HARNESS AND CONNECTOR (ID CODE BOX - BATTERY)


    Lexus Is250, Is220D. Gse20 Ale20.Engine Immobiliser.Engine Immobiliser System (For 2Ad-Fhv).Engine Immobiliser System (For 4Gr-Fse) Id Code Box Power Source Circuit

  1. Disconnect the J69 ECU connector.

  1. Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    J69-1 (+B) - Body ground
    		Always
    		10 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (ID CODE BOX - BODY GROUND)


    Lexus Is250, Is220D. Gse20 Ale20.Engine Immobiliser.Engine Immobiliser System (For 2Ad-Fhv).Engine Immobiliser System (For 4Gr-Fse) Id Code Box Power Source Circuit

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J69-8 (GND) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE