P2764

DTC P2764

Circuit Description
The ignition 1 voltage is supplied to the Torque Converter Clutch Pulse Width Modulated (TCC PWM) solenoid valve. The PCM controls the ON and OFF time of the TCC PWM solenoid by controlling the ground side of the TCC solenoid valve control circuit. The PCM uses a PWM duty cycle, in order to control application and release of the TCC. When the solenoid is commanded OFF, the PCM senses high voltage. When the solenoid is commanded ON, the PCM senses low voltage.

When the PCM detects a continuous open or short to ground in the TCC Solenoid valve control circuit, then DTC P2764 sets. DTC P2764 is a type B DTC.

Conditions for Running the DTC
^ The engine run time is greater than 5 seconds.
^ TCC PWM solenoid valve duty cycle is less than or equal to 0 percent.

Conditions for Setting the DTC
DTC P2764 sets when the PCM detects an open and short to ground in the TCC PWM solenoid valve circuit.

Action Taken When the DTC Sets
^ The PCM illuminates the Malfunction Indicator Lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met.
^ The PCM commands maximum line pressure.
^ The PCM inhibits fourth gear when the transmission is in Hot Mode.
^ The PCM freezes transmission adaptive function.
^ The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Freeze Frame and Failure records.
^ The PCM stores DTC P2764 in PCM history.

Conditions for Clearing the MIL/DTC
^ A scan tool can clear the MIL/DTC.
^ The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without an emission related diagnostic fault occurring.
^ The PCM cancels the default actions when the ignition is OFF long enough in order to power down the PCM.

Test Description
The number below refers to the step number on the diagnostic table.
2. Listen for a click when the solenoid energizes. Use a stethoscope if necessary.

Part 1:

Part 2:

Part 3:

DTC P2764