The automatic transmission fluid(ATF) temperature sensor is installed in the Valve Body. This sensor uses a thermistor whose resistance changes according to the temperature changes. The TCM supplies a 5V reference voltage to the sensor, and the output voltage of the sensor changes when the ATF temperature varies. The automatic transmission fluid(ATF) temperature provides very important data for the TCM’s control of the Torque Converter Clutch, and is also used for many other purposes.
This DTC code is set when the ATF temperature output voltage is lower than the value generated by thermistor resistance, in a normal operating range, for approximately 1 second or longer. The TCM regards the ATF temperature as fixed at a value of 80 ?, if this DTC is detected.
Item
Detecting Condition
Possible Cause
DTC Strategy
? Monitoring resistance range
? Sensor signal circuit is short to ground.
? Faulty sensor
? Faulty PCM
Enable Conditions
? Engine speed = 400rpm
? Shift lever position = R,D,2,L
Threshold Value
? Out of normal range
Diagnostic Time
? More than 5min
Fail Safe
? Oil pressure control is inhibited.
? TCC control is inhibited.
? Fail detection is inhibited for "SOLENOID VALVE".
TEMP.(?)
RESISTANCE(?)
0(32?)
2067
160(320?)
20.7K