Automatic Light Control Sensor Circuit

LIGHTING: LIGHTING SYSTEM: Automatic Light Control Sensor Circuit
- Automatic Light Control Sensor Circuit

DESCRIPTION

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

HINT
DTC code is output when malfunction of automatic light control sensor or open or short of automatic light control sensor circuit occurs.

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

OK:

Normal condition listed above is displayed.

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.

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

(a) Check for open or short circuit in the harness and the connector between the terminal 6 of the automatic light control sensor and the terminal B6-6 of the multiplex network body ECU Electronic Circuit Inspection Procedure.

(b) Check for open or short circuit in the harness and the connector between the terminal 3 of the automatic light control sensor and the terminal B6-4 of the multiplex network body ECU Electronic Circuit Inspection Procedure.

(c) Check for open or short circuit in the harness and the connector between the terminal 5 of the automatic light control sensor and the terminal B6-5 of the multiplex network body ECU Electronic Circuit Inspection Procedure.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Measure voltage between the terminal B6-4 and the terminal B6-6 of the multiplex network body ECU in the instrument panel junction block assembly.

Voltage:

NG -- REPLACE AUTOMATIC LIGHT CONTROL SENSOR

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