The input(turbine) speed sensor outputs pulse-signals according to the revolutions of the input shaft of the transmission. The TCM determines the input shaft speed by counting the frequency of the pulses. This value is mainly used to control the optimum fluid pressure during shifting.
The TCM sets this code if an output pulse-signal is not detected, from the input speed sensor, when the Output pulse signal is detected over the 24 pulse. The Fail-Safe function will be set by the TCM if this code is detected.
Item
Detecting Condition
Possible Cause
DTC Strategy
? Check the voltage range
? Faulty INPUT SPEED SENSOR
? Faulty PCM/TCM
? Signal circuit is open or short.
Enable Conditions
? Engine speed > 400rpm
? 10.2V < Battery voltage < 15.5V
? System is normal
? TCU communication = normal
? Shift lever switch = normal
Threshold Value
? To detect no pulse while detecting output revolution sensor signal 24 pulses
Diagnostic Time
? More than 500times × more than1sec
Fail Safe
? Self learning control is inhibited
? Locked in 3 rd gear