LIGHTING SYSTEM > Automatic Light Control Sensor Circuit

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DESCRIPTION

The main body ECU receives the signal from the automatic light control sensor.

WIRING DIAGRAM


B128003E01


INSPECTION PROCEDURE

1.CHECK WIRE HARNESS (MAIN BODY ECU - AUTOMATIC LIGHT CONTROL SENSOR)
B128004E02

  1. Disconnect the E19 main body ECU connector.

  1. Disconnect the F2 automatic light control sensor connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    E19-14 (CLTE) - F2-3 (CLTE)
    		Below 1 Ω
    E19-14 (CLTE) or F2-3 (CLTE) - Body ground
    		10 kΩ or higher
    E19-15 (CLTS) - F2-4 (CLTS)
    		Below 1 Ω
    E19-15 (CLTS) or F2-4 (CLTS) - Body ground
    		10 kΩ or higher
    E19-16 (CLTB) - F2-1 (CLTB)
    		Below 1 Ω
    E19-16 (CLTB) or F2-1 (CLTB) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


2.CHECK OPERATION OF AUTOMATIC LIGHT CONTROL SENSOR

  1. Replace the automatic light control sensor with a normally functioning one or a new one.

  1. Check for DTC.

    OK:
    DTC is not output.


NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)
OK

REPLACE AUTOMATIC LIGHT CONTROL SENSOR