Navigation System Television Camera Ecu Power Source Circuit

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Navigation. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUSE (TV, ECU-IG LH, ACC)

CHECK TELEVISION CAMERA ECU (+B, ACC, IG TERMINAL)

CHECK WIRE HARNESS (TELEVISION CAMERA ECU - BODY GROUND)

NAVIGATION SYSTEM - Television Camera ECU Power Source Circuit


DESCRIPTION

This circuit provides the power to the television camera ECU.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Navigation.Navigation System.Navigation System  Television Camera Ecu Power Source Circuit


INSPECTION PROCEDURE

1.INSPECT FUSE (TV, ECU-IG LH, ACC)
  1. Remove the TV and ECU-IG LH fuses from the cowl side junction block LH.

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

  1. Measure the resistance of the fuses.

    Standard resistance:
    Below 1 Ω


NG
REPLACE FUSE
OK


2.CHECK TELEVISION CAMERA ECU (+B, ACC, IG TERMINAL)
Lexus Gs430, Gs300. Uzs190 Grs190.Navigation.Navigation System.Navigation System  Television Camera Ecu Power Source Circuit
  1. Disconnect the L65 ECU connector.

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

    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    L65-1 (+B) - Body ground
    Always
    10 to 14 V
    L65-5 (ACC) - Body ground
    Engine switch on (ACC)
    10 to 14 V
    L65-2 (IG) - Body ground
    Engine switch on (IG)
    10 to 14 V


NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK


3.CHECK WIRE HARNESS (TELEVISION CAMERA ECU - BODY GROUND)
Lexus Gs430, Gs300. Uzs190 Grs190.Navigation.Navigation System.Navigation System  Television Camera Ecu Power Source Circuit
  1. Disconnect the L65 ECU connector.

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

    Standard resistance:
    Tester Connection
    Condition
    Specified Condition
    L65-8 (GND1) - Body ground
    Always
    Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE