Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
ENGINE COOLANT TEMPERATURE SENSOR CHECKCAUTION: Be careful not to touch the connector (resin section) with the tool when removing and installing.
1. Drain engine coolant, then remove the engine coolant temperature sensor.
2. With the temperature sensing portion of engine coolant temperature sensor immersed in hot water, check the resistance.
Standard value:
14 - 17 kOhm [at -2 °C (-4 °F)]
5.1 - 6.5 kOhm [at 0 °C (32 °F)]
2.1 - 2.7 kOhm [at 20 °C (68 °F)]
0.9 - 1.3 kOhm [at 40 °C (104 °F)]
0.48 - 0.68 kOhm [at 60 °C (140 °F)]
0.26 - 0.36 kOhm [at 80 °C (176 °F)]
3. If resistance deviates from the standard value greatly, replace the sensor.
4. Apply 3M(TM) AAD part number 8731 or equivalent to threaded portion.
5. Install the engine coolant temperature sensor and tighten it to the specified torque.
Tightening torque: 29 ± 10 N.m (22 ± 7 ft-lb)