Operation CHARM: Car repair manuals for everyone.

Engine Temperature Sensor: Testing and Inspection

ENGINE COOLANT TEMPERATURE SENSOR

INSPECTION

1. INSPECT E.F.I. ENGINE COOLANT TEMPERATURE SENSOR




a. Resistance inspection.
1. Using an ohmmeter, measure the resistance between each terminal.

Standard Resistance:
2.32 to 2.59 Ohms at Approx. 20 degree C (68 degree F)
0.310 to 0.326 Ohms at Approx. 80 degree C (126 degree F)


NOTE: While checking the engine coolant temperature sensor in water, be careful not to allow water to go into the terminals, and after checking, dry the sensor.