LIGHTING SYSTEM > Headlight Beam Level Control Actuator Circuit

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DESCRIPTION

When the actuator is received a signal from the headlight beam level control ECU, the step motor is activated and the angle of the reflector in the headlight will be adjusted.

WIRING DIAGRAM


E069008E02


INSPECTION PROCEDURE

1.INSPECT HEADLIGHT BEAM LEVEL CONTROL MOTOR LH


    I003440E01

  1. Disconnect the connector from headlight beam level control motor LH.

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

    Resistance:
    Tester connection
    		Condition
    		Specified condition
    1 (LH2) - 5 (LHB1)
    		Always
    		26 to 30 Ω
    3 (LH4) - 5 (LHB1)
    		Always
    		26 to 30 Ω
    4 (LH1) - 5 (LHB1)
    		Always
    		26 to 30 Ω
    6 (LH3) - 5 (LHB1)
    		Always
    		26 to 30 Ω



NG
REPLACE HEADLIGHT BEAM LEVEL CONTROL MOTOR LH
OK


2.CHECK HARNESS AND CONNECTOR (LEVEL CONTROL MOTOR LH - LEVEL CONTROL ECU)


    B110646E01

  1. Disconnect the H3 connector of headlight beam level control motor LH and the H17 connector of the headlight beam level control ECU.

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

    Resistance:
    Tester connection
    		Condition
    		Specified condition
    H3-1 (LH2) - H17-26 (LH2)
    		Always
    		Below 1 Ω
    H3-3 (LH4) - H17-25 (LH4)
    		Always
    		Below 1 Ω
    H3-4 (LH1) - H17-24 (LH1)
    		Always
    		Below 1 Ω
    H3-5 (LHB1) - H17-22 (LHG)
    		Always
    		Below 1 Ω
    H3-6 (LH3) - H17-23 (LH3)
    		Always
    		Below 1 Ω
    H17-26 (LH2) - Body ground
    		Always
    		10 kΩ or higher
    H17-25 (LH4) - Body ground
    		Always
    		10 kΩ or higher
    H17-24 (LH1) - Body ground
    		Always
    		10 kΩ or higher
    H17-22 (LHG) - Body ground
    		Always
    		10 kΩ or higher
    H17-23 (LH3) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT HEADLIGHT BEAM LEVEL CONTROL MOTOR RH


    I003440E03

  1. Disconnect the connector from headlight leveling motor RH.

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

    Resistance:
    Tester connection
    		Condition
    		Specified condition
    1 (RH2) - 5 (RHB1)
    		Always
    		26 to 30 Ω
    3 (RH4) - 5 (RHB1)
    		Always
    		26 to 30 Ω
    4 (RH1) - 5 (RHB1)
    		Always
    		26 to 30 Ω
    6 (RH3) - 5 (RHB1)
    		Always
    		26 to 30 Ω



NG
REPLACE HEADLIGHT BEAM LEVEL CONTROL MOTOR RH
OK


4.CHECK HARNESS AND CONNECTOR (LEVEL CONTROL MOTOR RH - LEVEL CONTROL ECU)


    B110646E03

  1. Disconnect the H4 connector of headlight beam level control motor RH and the H17 connector of the headlight beam level control ECU.

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

    Resistance:
    Tester connection
    		Condition
    		Specified condition
    H4-1 (RH2) - H17-13 (RH2)
    		Always
    		Below 1 Ω
    H4-3 (RH4) - H17-12 (RH4)
    		Always
    		Below 1 Ω
    H4-4 (RH1) - H17-11 (RH1)
    		Always
    		Below 1 Ω
    H4-5 (RHB1) - H17-9 (RHG)
    		Always
    		Below 1 Ω
    H4-6 (RH3) - H17-10 (RH3)
    		Always
    		Below 1 Ω
    H17-13 (RH2) - Body ground
    		Always
    		10 kΩ or higher
    H17-12 (RH4) - Body ground
    		Always
    		10 kΩ or higher
    H17-11 (RH1) - Body ground
    		Always
    		10 kΩ or higher
    H17-9 (RHG) - Body ground
    		Always
    		10 kΩ or higher
    H17-10 (RH3) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE