Advanced Diagnostics

Advanced Diagnostics

DTC P0715: Input Shaft (Mainshaft) Speed Sensor Circuit Malfunction (M/T Model)







General Description
The input shaft (mainshaft) speed sensor is attached to the transmission housing to sense input shaft (mainshaft) revolutions. The engine control module (ECM) determines the vehicle speed according to the signal from the input shaft (mainshaft) speed sensor for the control units. If no signal from the input shaft (mainshaft) speed sensor is received for a set time, the ECM detects a malfunction and a DTC is stored.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status







Enable Conditions







Malfunction Threshold
No signal from the input shaft (mainshaft) speed sensor is detected for at least 20 seconds.

Driving Pattern
Start the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on.

Diagnosis Details

Conditions for illuminating the MIL
When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the DTC and the freeze frame data are stored.The MIL does not come on.

Conditions for clearing the MIL
The DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.