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Fluid Temperature Sensor Test

  1. Check resistance between fluid temperature sensor terminals. Resistance should be 2500 ohms at 68°F (20°C), and 300 ohms at 176°F (80°C). If resistance is not as specified, replace sensor.
  2. Disconnect solenoid harness connector in engine compartment. Check resistance between terminals No. 33 and 35 when transaxle is cold. See FLUID TEMPERATURE SENSOR DIAGNOSIS  table. Check voltage between ATCU terminal No. 33 and ground, while warming up transaxle. If resistance and voltage is not as specified, repair circuit as necessary.
FLUID TEMPERATURE SENSOR DIAGNOSIS

Transaxle Terminal Temperature Resistance Voltage
33 To 35 Cold (1) 2500 Ohms N/A
33 To Ground Warming Up (2) N/A 1.5-.5
(1) Cold 68°F (20°C).
(2) Cold 68°F (20°C); Hot 176°F (80°C).
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