LIGHTING SYSTEM > Automatic Light Control Sensor Circuit

for Preparation Click here


DESCRIPTION

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

WIRING DIAGRAM


B110585E04


INSPECTION PROCEDURE

1.READ VALUE OF INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position and press the intelligent tester main switch ON.

  1. Select the items below in the DATA LIST, and read the displays on the intelligent tester.

    BODY NO.1: 
    Item
    		Measurement Item/
    Display (Range)
    		Normal Condition
    		Diagnostic Note
    Illumination Rate Info
    		Illumination rate/ON or OFF
    		ON: Illuminate rate ON
    OFF: Illuminate rate OFF
    		-



NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

2.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - AUTOMATIC LIGHT CONTROL SENSOR)


    B113770E01

  1. Disconnect the automatic light control sensor connector and multiplex network body ECU connector.

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

    Resistance:
    Tester connection
    		Condition
    		Specified condition
    CLTE (A13-3) - CLTE (B6-4)
    		Always
    		Below 1 Ω
    CLTS (A13-5) - CLTS (B6-5)
    		Always
    		Below 1 Ω
    CLTB (A13-6) - CLTB (B6-6)
    		Always
    		Below 1 Ω
    CLTE (B6-4) - Body ground
    		Always
    		10 kΩ or higher
    CLTS (B6-5) - Body ground
    		Always
    		10 kΩ or higher
    CLTB (B6-6) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


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


    E068632E14

    Voltage:
    Tester connection
    		Condition
    		Specified voltage
    CLTE (B6-4) - CLTB (B6-6)
    		Ignition switch OFF → ON
    		Below 1 V → 10 to 14 V



NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK

REPLACE AUTOMATIC LIGHT CONTROL SENSOR