P0743
DTC P0743 - TORQUE CONVERTER CLUTCH (TCC) CIRCUIT ELECTRICALConditions for Setting the DTC
- The Transmission Control Module (TCM) detects an OFF signal from the lockup solenoid monitor for 630 milliseconds when the lockup solenoid driver outputs the ON signal.
- The TCM detects an ON signal from the lockup solenoid monitor for 500 milliseconds when the lockup solenoid driver outputs the OFF signal.
Action Taken When the DTC Sets
- The TCM illuminates the Malfunction Indicator Lamp (MIL) after two consecutive trips with a failure reported. No TCC lockup control.
Conditions for Clearing the MIL/DTC
- The TCM turns off the MIL after three consecutive trips without a failure reported.
- The Scan-100 scan tool can clear the Diagnostic Trouble Code (DTC) from the TCM history.
- The TCM clears the DTC from the TCM history if it does not detect a failure for 1 second.
DTC P0743 - Torque Converter Clutch (TCC) Circuit Electrical