Navigation System Navigation Ecu Power Source Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MULTI-DISPLAY POWER SOURCE CIRCUIT

CHECK MULTI-DISPLAY

NAVIGATION SYSTEM - Navigation ECU Power Source Circuit


DESCRIPTION

This circuit provides the power to the navigation ECU.

WIRING DIAGRAM

The wiring diagram is shown below.

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


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


INSPECTION PROCEDURE

1.CHECK MULTI-DISPLAY POWER SOURCE CIRCUIT
Refer to the "multi-display power source circuit" (Click here).
If the power source circuit is operating normally, proceed to the next step.

NEXT


2.CHECK MULTI-DISPLAY


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

  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    h1-31 (+B) - Body ground
    		Always
    		10 to 14 V
    h1-14 (ADET) - Body ground
    		Engine switch on (ACC)
    		10 to 14 V

  1. Measure the resistance of the connector.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    h1-2 (GND) - Body ground
    		Always
    		Below 1 Ω


NG
REPLACE MULTI-DISPLAY
OK

REPLACE NAVIGATION ECU