Symptom Related Diagnostic Procedures

TROUBLESHOOTING
This system uses the multiplex communication system. so check diagnosis system of the multiplex communication system before you proceed with troubleshooting.
The table above will be useful for you in troubleshooting these electrical problems. The most likely causes of the malfunction are shown in the order of their probability. Inspect each part in the order shown, and replace the part when it is found to be faulty.





HINT: Tail cancellation refers to the illumination brightness becoming 100% when the rheostat light control is turned to the right beyond the moderate position. (Light is not applied to the automatic light control sensor at this time.)

Rheostat Light Control





Wire Harness Side





From Back Side

Automatic Light Control Sensor





Wire Harness Side








1. None of the illumination can be adjusted

2. Only the combination meter can be adjusted

3. The combination meter can be adjusted, but not other illumination

4. Tall cancellation does not work for the clock, air conditioner panel or combination meter

5. Tall cancellation does not work for one of clock, air conditioner panel or combination meter

6. Tail cancellation (illumination at 100% brightness) does not occur when tail cancellation of the rheostat light control is released, the light control switch is put on AUTO and light strikes the automatic light control sensor. (Area surrounding vehicle is dark.)