LIGHTING SYSTEM > Indicator Circuit

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DESCRIPTION

The headlight beam level control system indicator light in the combination meter assembly comes on for approximately 3 seconds when the power switch is turned on (IG). The indicator light also comes on when the headlight leveling ECU assembly detects a malfunction.

WIRING DIAGRAM


E223772E01


INSPECTION PROCEDURE

1.CHECK HEADLIGHT LEVELING ECU ASSEMBLY (INPUT SIGNAL)


    E223776E02

  1. Disconnect the A46 headlight leveling ECU assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A46-6 (WNG) - Body ground
    		Power switch on (IG)
    		11 to 14 V
    Power switch off
    		Below 1 V

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Headlight leveling ECU assembly)



NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)  

2.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT LEVELING ECU ASSEMBLY)

  1. Disconnect the H19 combination meter assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A46-6 (WNG) - H19-3 (LVWG)
    		Always
    		Below 1 Ω
    A46-6 (WNG) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE COMBINATION METER ASSEMBLY
OK

GO TO METER / GAUGE SYSTEM (Click here)