Engine Coolant Temperature Sensor: Inspection

INSPECT EFI. ENGINE COOLANT TEMPERATURE SENSOR

Check the resistance.
1. Using an ohmmeter, measure the resistance between the terminal.

Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
1 (E2) - 2 (THW)	2.32 to 2.59 kΩ at 20°C (68°F)
1 (E2) - 2 (THW)	0.310 to 0.326 kΩ at 20°C (68°F)

NOTE: If checking the engine coolant temperature sensor in water, be careful not to allow water to intrude into the terminals. After checking, wipe up water on the engine coolant temperature sensor.

If the result is not as specified, replace the engine coolant temperature sensor.

Fig 1: Inspecting EFI. Engine Coolant Temperature Sensor

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.