DTC Advanced Diagnostics: P0746
DTC P0746:CVT Drive Pulley Pressure Control Solenoid Valve Stuck OFF General Description
The CVT drive pulley pressure control solenoid valve controls hydraulic pressure to the drive pulley. The CVT drive pulley pressure control solenoid valve is controlled by duty cycle output. The spool in the CVT drive pulley pressure control solenoid valve moves the valve according to the current, and produces hydraulic pressure in proportion to the current. To shift the transmission properly, the transmission control module (TCM) outputs a drive pulley hydraulic pressure control signal. If the pulley ratio is overdrive while the vehicle is stopped with the forward clutch engaged, and the estimated input torque when starting is a specified value or more and belt slippage does not occur when driving, the TCM detects a CVT drive pulley pressure control solenoid valve stuck OFF failure and stores a DTC. Monitor Execution, Sequence, Duration, DTC Type
Enable Conditions
Malfunction Threshold
Symptom 1, Symptom 2-A, and Symptom 2-B occurs.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
Confirmation Procedure
Operating Condition
With the HDS
None. Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the TCM memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on, the shift position indicator blinks, and a Confirmed DTC and the freeze data are stored. Conditions for clearing the DTC
The shift position indicator comes off by turning the vehicle to the OFF (LOCK) mode. The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command. |