Transmission Fluid Temperature Sensor Check

Remove the transmission fluid temperature sensor.
Measure the resistance between terminals No. 1 and No. 2 of the transmission fluid temperature sensor connector.
Standard value:

Fig 1: Transmission Fluid Temperature Sensor Continuity Table
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 2: Checking Resistance Between Terminals No. 1 & 2
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
If the transmission fluid temperature sensor resistance is outside the specified range and the "A/T TEMP" indicator light is illuminating, replace the transmission fluid temperature sensor.
NOTE: The "A/T TEMP" indicator light on the combination meter illuminating when the temperature reaches approximately 125°C (257°F) or greater, and then stops flashing when the temperature drops below approximately 115°C (238°F).