Headlamp Dimmer Switch: Testing and Inspection

W/O Automatic light control system:
INSPECT LIGHT CONTROL SWITCH CONTINUITY




If continuity is not as specified, replace the switch.

W/ Automatic light control system:
INSPECT LIGHT CONTROL SWITCH CONTINUITY




If continuity is not as specified, replace the switch.

INSPECT HEADLIGHT DIMMER SWITCH CONTINUITY




If continuity is not as specified, replace the switch.




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 on the following page.
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 AUTO.
- Vehicle's surroundings are bright.




If 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.