Headlamp Control Module: Testing and Inspection

w/ Automatic Light Control System:
INSPECT AUTOMATIC LIGHT CONTROL
a. Turn the ignition switch ON.
b. Turn the light control switch to OFF.
c. Release the parking brake lever.
d. Gradually cover the top of the sensor.
e. Check that the accessory lights and the headlights turn on.




w/ Automatic light control system:
INSPECT AUTOMATIC LIGHT CONTROL
a. Gradually expose the sensor.
b. Check that the headlights and the accessory lights turn off.

w/ Automatic light control system:
INSPECT LIGHT-OFF CONDITION
a. Turn the ignition switch ON.
b. Gradually cover the top of the sensor. Lights auto ON:
c. Verify that the lights will go off when the light control switch position is OFF or the area surrounding the sensor is bright or the driver's door is opened while the ignition switch is OFF.

w/ Automatic Light Control System:
INSPECT LIGHTS-ON CONDITION
a. Open the driver's door while the ignition switch is OFF.
b. Turn the light control switch to AUTO with the door open and cover the top of the sensor, and check that the lights come on when the ignition switch is turned ON.

w/ Automatic light control system:
INSPECT SENSOR CIRCUIT







a. Disconnect the connector from the sensor and inspect the connector on the wire harness side, as shown in the chart.

If circuit is as specified, perform the inspection.
If the circuit is not as specified, inspect the circuit connected to other parts.







b. Connect the wire harness side connector to the sensor and inspect wire harness side connector from the back side.

HINT:
- Ignition switch ON.
- Light control switch OFF.
- Around the vehicle is bright.

If circuit is as specified, replace the sensor with a new one.
If the circuit is not as specified, inspect the circuit connected to other parts.