No.12 Torque Converter Clutch (TCC) Non-Operation: Notes
WARNING: This page is about a different variant/trim than selected.
| 12 |
Torque converter clutch (TCC) non-operation |
| DESCRIPTION |
- TCC does not operate when vehicle reaches TCC operation range.
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| POSSIBLE CAUSE |
- Basically, TCC does not operate when the fail-safe is operating. Verify the DTC at first. If the TCC operates when driving at high speeds only, the malfunction (improper adjustment) is in the M position switch circuit or TR switch circuit.
CAUTION:
- If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which may have mixed in with the ATF.
- TCC slippage, burnt
- Line pressure low
- Incorrect accelerator opening signal
- Input/turbine speed sensor malfunction
- VSS malfunction
- Output solenoid valve system malfunction (Sticking)
- TCC control solenoid malfunction
- Control valve body system malfunction (Poor operation, sticking)
- TCC hydraulic pressure system malfunction
- APP sensor malfunction (Not operating linearly)
- Input/turbine speed sensor or VSS malfunction
- Brake switch malfunction (always ON)
- CKP sensor malfunction
- CHT sensor malfunction
- Operation of fail-safe function.
- Short to power or ground at TCC control solenoid related circuit.
NOTE:
- Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See BASIC INSPECTION .)
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