Symptom Chart
WARNING: This page is about a different variant/trim than selected.
| Symptom | Possible Sources | Action |
|---|---|---|
| TCC does not apply | Solenoid filter blocked to the TCC solenoid | INSTALL a new TCC solenoid. |
| TCC solenoid mechanically stuck off | INSTALL a new TCC solenoid. | |
| TCC regulator valve stuck off | DISASSEMBLE, CLEAN and INSPECT the TCC regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . | |
| TCC APPLY hydraulic circuit blocked or leaking | DISASSEMBLE and INSPECT the transmission, main control and pump assembly passages for debris/blockage. CLEAN as necessary. INSPECT the TCC hydraulic circuit leak paths, REFER to: Main Control Valve Body . REFER to: Transmission . REFER to: Leakage Inspection . | |
| TCC friction material worn or damaged. | INSTALL a new torque converter. REFER to: Transmission . | |
| TCC always applied/stalls vehicle | TCC solenoid mechanically stuck on | INSTALL a new TCC solenoid. |
| TCC regulator valve stuck on | DISASSEMBLE, CLEAN and INSPECT the TCC regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body . | |
| TCC RELEASE hydraulic circuit blocked or leaking | DISASSEMBLE and INSPECT the transmission, main control and pump assembly passages for debris/blockage. CLEAN as necessary. INSPECT the TCC hydraulic circuit leak paths, REFER to: Main Control Valve Body . REFER to: Transmission . REFER to: Leakage Inspection . | |
| TCC welded or damaged. | INSTALL a new torque converter. REFER to: Transmission . | |
| TCC cycles, shudders or chatters | Incorrect Transmission Strategy programmed into the PCM/ TCM | PERFORM transmission strategy download, REFER to: Transmission Strategy Download . |
| TCC solenoid filter or seal damaged at TCC solenoid | INSTALL a new TCC solenoid. | |
| TCC solenoid mechanically sticking | INSTALL a new TCC solenoid. | |
| TCC regulator valve, springs, clips loose, stuck, binding, missing, misassembled | DISASSEMBLE, CLEAN and INSPECT the TCC regulator valve. If bore or valve is damaged, INSTALL a new main control. REFER to: Main Control Valve Body . | |
| TCC RELEASE/TCC APPLY hydraulic circuit blocked or leaking | DISASSEMBLE and INSPECT the transmission, main control and pump assembly passages for debris/blockage. CLEAN as necessary. INSPECT the TCC hydraulic circuit leak paths, REFER to: Main Control Valve Body . REFER to: Transmission . REFER to: Leakage Inspection . | |
| TCC cycling/shudder/chatter | VERIFY the TCC is causing the concern. ATTEMPT to duplicate event while commanding the PID TCC_OSC OFF. If the concern cannot be duplicated while the TCC is commanded off the TCC may be worn or damaged. REFER to: Transmission . | |