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LIGHTING SYSTEM > Headlight Beam Level Control Actuator Circuit

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DESCRIPTION

The headlight leveling ECU assembly actuates the headlight leveling motor according to vehicle conditions.

WIRING DIAGRAM


E142598E08


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING MOTOR - HEADLIGHT LEVELING ECU ASSEMBLY)

  1. Disconnect the A48 headlight leveling ECU connector.

  1. Disconnect the A14 or A49 headlight leveling motor connector.

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

    Standard Resistance:
    LH Side 
    Tester Connection
    		Condition
    		Specified Condition
    A48-18 (LHT) - A14-2 (LHT)
    		Always
    		Below 1 Ω
    A48-11 (LH+) - A14-3 (LHIG)
    		Always
    		Below 1 Ω
    A48-24 (LH-) - A14-1 (LHE)
    		Always
    		Below 1 Ω
    A48-18 (LHT) - Body ground
    		Always
    		10 kΩ or higher
    A48-11 (LH+) - Body ground
    		Always
    		10 kΩ or higher
    A48-24 (LH-) - Body ground
    		Always
    		10 kΩ or higher
    RH Side 
    Tester Connection
    		Condition
    		Specified Condition
    A48-17 (RHT) - A49-2 (RHT)
    		Always
    		Below 1 Ω
    A48-10 (RH+) - A49-3 (RHIG)
    		Always
    		Below 1 Ω
    A48-23 (RH-) - A49-1 (RHE)
    		Always
    		Below 1 Ω
    A48-17 (RHT) - Body ground
    		Always
    		10 kΩ or higher
    A48-10 (RH+) - Body ground
    		Always
    		10 kΩ or higher
    A48-23 (RH-) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

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