Headlamp Switch: Testing and Inspection
INSPECT LIGHTS-OFF CONDITIONa. Turn the ignition switch ON.
b. Gradually cover the top of the sensor. Lights auto ON:
c. Check that the lights go off under the following conditions.
1. Light control switch is OFF.
2. The area surrounding the sensor gets bright.
3. The driver's door is opened with the ignition switch OFF.
INSPECT LIGHTS-ON CONDITION
a. Open the driver's door while the ignition switch is OFF.
b. Turn the light control switch to AUTO leaving the door open and cover the top of the sensor, make sure that the lights go on when the ignition switch is turned ON.
ADJUST AUTOMATIC LIGHT CONTROL SENSOR
a. Adjustment of the light control is performed by turning the sensitivity knob on the sensor.
b. This will be determined at what light condition the automatic control will take place.
- If response is too quick, turn the knob counterclockwise.
- If response is too slow, turn the knob clockwise.
INSPECT AUTOMATIC LIGHT CONTROL SENSOR CIRCUIT
Connector connected:
Connect the wire harness side connector to the sensor and inspect wire harness side connector from the back side, as shown.
HINT:
- Ignition switch ON.
- Light control switch AUTO.
- Vehicle's surroundings are bright.
It circuit is as specified, try replacing the sensor with a new one. If the circuit is not as specified, inspect the circuit connected to other parts.
INSPECT AUTOMATIC LIGHT CONTROL SENSOR CIRCUIT
Connector disconnected:
Disconnect the connector from the sensor and inspect the connector on the wire harness side, as shown in the table.
If circuit is as specified, perform the inspection.
If the circuit is not as specified, inspect the circuit connected to other parts.