Automatic Light Control Sensor Circuit

LIGHTING: LIGHTING SYSTEM: Automatic Light Control Sensor Circuit

Automatic Light Control Sensor Circuit

DESCRIPTION

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

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Body / Data List.
(e) Read the display on the Techstream.

Body (Body ECU)





OK:
Normal condition listed above is displayed.
NG -- CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - AUTOMATIC LIGHT CONTROL SENSOR)
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - AUTOMATIC LIGHT CONTROL SENSOR)




(a) Disconnect the automatic light control sensor connector and multiplex network body ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
(a) Measure the voltage according to the value(s) in the table below.





Voltage:






NG -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK -- REPLACE AUTOMATIC LIGHT CONTROL SENSOR