Headlamp Dimmer Switch: Testing and Inspection

INSPECT FAIL-SAFE FUNCTION
(Light Control Unit)







INSPECT HEADLIGHT DIMMER SWITCH CONTINUITY
If continuity is not as specified, replace the switch.







INSPECT HEADLIGHT DIMMER SWITCH CIRCUIT
Connector disconnected:
Disconnect the connector from the switch and inspect the connector on the wire harness side, as shown.
If circuit is not as specified, inspect the wire harness.







INSPECT HEADLIGHT DIMMER SWITCH CIRCUIT
Connector connected:
Connect the wire harness side connector to the light control and dimmer switch and inspect the connector from the back side, as shown.
If circuit is not as specified, inspect the wire harness.