P2763

DTC P2763 (2.2L)





Circuit Description with 4T40-E / 4T45-E Automatic Transaxle
The torque converter clutch pulse width modulated (TCC PWM) solenoid valve is a normally closed solenoid used to control the apply and release of the converter clutch. The powertrain control module (PCM) operates the solenoid with a negative duty cycle. When vehicle operating conditions are appropriate to apply the TCC, the PCM immediately increases the duty cycle to approximately 42 percent. The PCM then ramps the duty cycle to approximately 90 percent to achieve full TCC apply pressure. 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 short to voltage in the TCC PWM solenoid valve circuit, then DTC P2763 sets. DTC P2763 is a type A DTC.

DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P2763 Torque Converter Clutch (TCC) Pressure Control (PC) Solenoid
Control Circuit High Voltage

Conditions for Running the DTC
^ The engine is running for 5 seconds or more.
^ The TCC PWM solenoid valve duty cycle is 50 percent or more.

Conditions for Setting the DTC
The PCM detects a short to voltage on the TCC PWM solenoid valve circuit for 4.3 seconds.

Action Taken When the DTC Sets
^ The PCM illuminates the malfunction indicator lamp (MIL).
^ The PCM forces the TCC solenoid OFF.
^ The PCM inhibits TCC engagement.
^ The PCM freezes transmission adaptive functions.
^ 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 P2763 in PCM history.

Conditions for Clearing the MIL/DTC
^ The PCM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
^ 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 DTC default actions when the ignition switch is OFF long enough in order to power down the PCM.

Diagnostic Aids
Ensure the wiring harness is not stretched too tightly or other components are pressing on the connector body. Also, inspect for proper clearance to any other components and wiring.

Test Description








The numbers below refer to the step numbers on the diagnostic table.
3. This step tests the PCM and the wiring to the transmission.
5. This step verifies that the circuit has the correct resistance.