ENGINE COOLANT TEMPERATURE SENSOR INSPECTION

PROCEDURE

1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR

   CAUTION:

   
   

   • Do not put your hands into the water that has been heated for the inspection.

   • Touching the heated water could result in burns.

   
   
   
   1. 

      *a	Component without harness connected (Engine Coolant Temperature Sensor)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition D23-1 - D23-2 20°C (68°F) 2.32 to 2.59 kΩ 80°C (176°F) 0.310 to 0.326 kΩ

      Note

      If checking the engine coolant temperature sensor in water, be careful not to allow water to contact the terminals. After checking, wipe the water off the engine coolant temperature sensor.

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

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

   CAUTION:

   
   

   • Do not put your hands into the water that has been heated for the inspection.

   • Touching the heated water could result in burns.

   
   
   
   1. 

      *A	for Front
      *B	for Rear
      *a	Component without harness connected (E.F.I. Engine Coolant Temperature Sensor)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (for Front)
      Tester Connection Condition Specified Condition D21-1 - D21-2 20°C (68°F) 2.32 to 2.59 kΩ 80°C (176°F) 0.310 to 0.326 kΩ

      Standard Resistance (for Rear)
      Tester Connection Condition Specified Condition D20-1 - D20-2 20°C (68°F) 2.32 to 2.59 kΩ 80°C (176°F) 0.310 to 0.326 kΩ

      Note

      If checking the E.F.I. engine coolant temperature sensor in water, be careful not to allow water to contact the terminals. After checking, wipe the water off the E.F.I. engine coolant temperature sensor.

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