ATF Temperature Sensor: Inspection

Disconnect the front side ATF cooler pipe from the elbow and remove the elbow.
Remove the ATF temperature sensor from the transmission case.
Place the ATF temperature sensor in a container of ATF.

Fig 1: Identifying ATF Temperature Sensor
Courtesy of ISUZU MOTOR CO.
Measure the resistance between each terminals, while warming ATF. Resistance: 0.5 - 30 k Ω (at 0°C - 120°C)
If either of the measured values exceeds the specified value, replace the ATF temperature sensor. Torque: 15 N.m (11 lb ft)