Advanced Diagnostics

Advanced Diagnostics - DTC P0970: Pressure Control Solenoid "C" Control Circuit Low











General Description
The CVT clutch pressure control solenoid valve controls and optimizes clutch pressure (hydraulic pressure) for various driving conditions. The CVT clutch pressure control solenoid valve is controlled by the duty cycle output. The spool in the CVT clutch pressure control solenoid valve pushes the valve according to the current, and produces hydraulic pressure in proportion to the current. The powertrain control module (PCM) measures the current that passes through the CVT clutch pressure control solenoid valve and uses feedback control to compensate for the difference between the measured current and the commanded one. If the measured current is not equal to the duty cycle command, the PCM detects a malfunction (open, short to ground) and stores a DTC.

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






Enable Conditions






Malfunction Threshold
The measured current for the PCM's command value is as specified here for at least 1 second.






Driving Pattern
1. Start the engine.
2. Shift to D with the brake pedal pressed and wait for at least 1 second.

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
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 or by disconnecting the battery.