Advanced Diagnostics

DTC P0767: Shift Solenoid Valve D Stuck ON




General Description
Shift solenoid valve D is installed in the transmission housing. It is controlled by the ON/OFF signal from the powertrain control module (PCM) to apply line pressure to the lock-up shift valve. The signal from the PCM is output to apply clutch pressure control pressure to the proper gear change clutch according to the gear change schedule. When the signal to shift solenoid valve D from the PCM is OFF, and line pressure is discharged, the lock-up shift valve is inactive. When the signal to shift solenoid valve D from the PCM is ON, and line pressure is applied to lock-up shift valve, it operates against the lock-up shift valve spring. The PCM monitors the input shaft (mainshaft) speed and the output shaft (countershaft) speed at the gear change determined by the shift schedule. When an improper gear ratio is output compared to the predetermined gear change mode, a shift solenoid valve D ON failure is detected and a DTC is stored.




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




Enable Conditions

Malfunction Threshold
One of these conditions occurs.
- The actual gear position is neutral for at least 3 seconds when 1st gear in-gear is commanded, though there is no record of being in neutral when reverse gear in-gear is commanded.
- The actual gear position is neutral for at least 3 seconds though 1st gear in-gear is commanded and reverse drive occurred during this driving cycle.

Driving Pattern
Start the engine, and accelerate the vehicle until the transmission shifts into 5th gear in the D position.

- Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

Diagnosis Details

Conditions for illuminating the MIL
When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the PCM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

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.