Component Tests and General Diagnostics

INSPECTION







1. INSPECT LIGHT CONTROL SWITCH CONTINUITY
If continuity is not as specified, replace the switch.







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







3. INSPECT HEADLIGHT CONTROL RELAY CONTINUITY
If continuity is not as specified, replace the relay.







4. INSPECT TAILLIGHT CONTROL RELAY CONTINUITY
If continuity is not as specified, replace the relay.







5. INSPECT D.R.L. RELAY CIRCUIT
If continuity is not as specified, replace the relay.







6. INSPECT DIMMER RELAY CIRCUIT
If continuity is not as specified, replace the relay.




7. AUTO ON:
INSPECT AUTOMATIC LIGHT CONTROL
a. Turn the ignition switch ON.
b. Turn the light control switch to AUTO.
c. Gradually cover the top of the sensor.
d. Check the accessory lights and the headlights should turn ON.




8. AUTO OFF:
INSPECT AUTOMATIC LIGHT CONTROL
a. Gradually expose the sensor.
b. Check the headlights and the accessory lights should turn OFF.

9. INSPECT LIGHTS-OFF CONDITION
a. Turn the ignition switch ON.
b. Lights auto ON:
Gradually cover the top of the sensor.
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. After the ignition switch is turned OFF and after 30 sec. from when open doors are all closed.

10. 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.




11. 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.







12. Connector connected:
INSPECT AUTOMATIC LIGHT CONTROL SENSOR CIRCUIT
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.

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.







13. Connector disconnected:
INSPECT AUTOMATIC LIGHT CONTROL SENSOR CIRCUIT
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 on the following page.
If the circuit is not as specified, inspect the circuit connected to other parts.







14. INSPECT DAYTIME RESISTOR CONTINUITY
If continuity is not as specified, replace the resistor.