Pinpoint Test J : Torque Converter Clutch Operation

WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions
- Torque converter clutch (TCC) does not apply
  - Access the PCM/ TCM and monitor parameter identifications (PIDs) TCC, TC_SLIPDSD and TC_SLIPACT. Road test the vehicle, making sure TCC lockup is attempted. If the parameter identifications (PIDs) indicate the TCC is slipping when lockup is commanded, check the TCC for a does not apply condition. REFER to: Torque Converter Clutch (TCC) .
- Torque converter clutch (TCC) always applied
  - Access the PCM/ TCM and monitor parameter identifications (PIDs) TCC, TC_SLIPDSD and TC_SLIPACT. Start the engine and select Drive. If the parameter identifications (PIDs) indicate the TCC does not slip and the engine lugs or stalls when Drive is selected, check the TCC for an always applied condition. REFER to: Torque Converter Clutch (TCC) .
- Torque converter clutch (TCC) cycles, shudders, chatters
  - Access the PCM/ TCM and monitor parameter identifications (PIDs) TCC, TC_SLIPDSD and TC_SLIPACT. Road test the vehicle, making sure TCC lockup is attempted. If the parameter identifications (PIDs) indicate TCC shuddering, check the TCC for a shuddering condition. REFER to: Torque Converter Clutch (TCC) .
Possible Sources
- Low transmission fluid level
- TCC solenoid
- Torque converter
- TCC hydraulic circuit
Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods