P0743 OBD Trouble Code

Torque Converter Clutch Circuit Electrical

Torque Converter Clutch Solenoid Circuit Conditions

Key on or engine running, then the PCM detected an open or short circuit condition in the TCC solenoid or its circuit

TCC Circuit Conditions

Engine running in gear, VSS signals received, and PCM did not detect a voltage change at TCC solenoid with it on

TCC Enable Circuit Electrical (4L30-E Transmission)

Engine running with the TCC commanded off, TCM high side driver closed, then the PCM detected a short to ground (TCM detected less than 2.45v for 0.18 seconds on the control circuit), or an open circuit (TCM detected 2 45-3 53 volts for 0.18 seconds on the control circuit), or it detected a short to battery (TCM detects more than 4 02 volts for 0.18 seconds on the control circuit)