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. Connector disconnected:
INSPECT LIGHT CONTROL SWITCH CIRCUIT
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.







4. Connector disconnected:
INSPECT HEADLIGHT DIMMER SWITCH CIRCUIT
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.







5. Connector connected:
INSPECT LIGHT CONTROL SWITCH CIRCUIT
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.







6. Connector connected:
INSPECT HEADLIGHT DIMMER SWITCH CIRCUIT
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.




7. INSPECT DAYTIME RUNNING LIGHT NO.3 AND NO.4 RELAY CONTINUITY
If continuity is not as specified, replace the relay.




8. HEADLIGHT RELAY:
INSPECT ENGINE ROOM R/B RELAY CIRCUIT

HINT: The headlight relay is built in the engine room junction block. Also, the relay is constructed with a relay block that is in the junction block as a unit. To disconnect the wire harness connecting with relay block is impossible. If the relay has a malfunction, replace it with junction block assembly wire harness together.

9. INSPECT HEADLIGHT DIMMER ( DAYTIME RUNNING LIGHT NO.2) RELAY CIRCUIT.




10. INSPECT TAILLIGHT CONTROL RELAY:
INSPECT ENGINE ROOM R/B RELAY CIRCUIT.

HINT: The taillight relay is built in engine room junction block.Also the relay is constructed with a relay block that is in the junction block as a unit. To disconnect the wire harness connecting with relay block is impossible. if the relay has a malfunction ,replace it with junction block assembly wire harness together.




11. 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 come on.




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

13. INSPECT LIGHT-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. The driver's door is opened with the ignition switch OFF.

14. 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, and verify that the lights go on when the ignition switch is turned ON.







15. 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 chart.

HINT:
- Ignition switch is ON.
- Light control switch is in AUTO.
- Around the vehicle is light.

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







16. 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 is ON.
- Light control switch is in AUTO.
- Around the vehicle is light.

If circuit is as specified, inspect the circuit.
If the circuits is not as specified, replace the sensor with a new one.