Car wiring diagrams: Acura Tcc Circuit Malfunction, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. Code P TCC Circuit malfunction Answered by a verified Mechanic for Acura.Need Help Please !!! Transmission was sent to Transmission shop for transmission problem won't shift as contract labor, a week later check engine light came on with .P Torque Converter Clutch Circuit Torque Converter Clutch Circuit Malfunction. and negative lead on the pins for the TCC power and control circuit..