California

TROUBLESHOOTING PROCEDURES








CIRCUIT DIAGRAM





INSPECTION USING SCAN TOOL








HARNESS INSPECTION PROCEDURE

TROUBLESHOOTING HINTS
Hint: If the fast idle speed is inadequate or the engine emits dark smoke during engine warm up operation, the engine coolant temperature sensor is often faulty.

SENSOR INSPECTION
(1) Remove 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.

INSTALLATION
(1) Apply sealant to threaded portion.
(2) Install engine coolant temperature sensor and tighten it to specified torque.

Torque: 30 Nm (22 ft-lbs.)

(3) Fasten harness connectors securely.