Troubleshooting

CIRCUIT DIAGRAM








HARNESS INSPECTION PROCEDURES

SENSOR INSPECTION
1. Remove the engine coolant temperature sensor from the intake manifold.








2. With temperature sensing portion of engine coolant temperature sensor immersed in hot water, check resistance.
3. If the resistance deviates from the standard value greatly, replace the sensor.


TROUBLESHOOTING HINTS
If the fast idle speed is not high enough or the engine gives off dark smoke during the engine warm-up operation, it might be caused by the engine coolant temperature sensor.





USING VOLTMETER

INSTALLATION
1. Apply sealant LOCTITE 962T or equivalent to threaded portion.
2. Install engine coolant temperature sensor and tighten it to specified torque.

Tightening Torque: Engine coolant temperature sensor 15-20 Nm (150-200 kg.cm, 11-15 lb.ft)

3. Connect the harness connector securely.