NO. 12 TORQUE CONVERTER CLUTCH (TCC) NON-OPERATION [SJ6A-EL]
| 12 | Torque converter clutch (TCC) non-operation |
|---|
| DESCRIPTION | TCC does not operate when vehicle reaches TCC operation range. |
| POSSIBLE CAUSE | Basically, the 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 range 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 throttle position signal Incorrect accelerator pedal position signal Incorrect engine speed signal Incorrect engine coolant temperature signal Incorrect engine torque signal Turbine 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) Turbine sensor or VSS malfunction Operation of fail-safe function. Short to power or GND at TCC control solenoid related circuit. NOTE: Before following the troubleshooting steps, make sure that the Automatic Transmission On-Board Diagnostic and Automatic Transmission Basic Inspection are conducted. (See «BASIC INSPECTION [SJ6A-EL]» ) |
| 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. |
| NOTE |
|---|
| Before following the troubleshooting steps, make sure that the Automatic Transmission On-Board Diagnostic and Automatic Transmission Basic Inspection are conducted. (See «BASIC INSPECTION [SJ6A-EL]» ) |
POSSIBLE CAUSE DESCRIPTION
NO. 16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [SJ6A-EL]
| 16 | Judder upon torque converter clutch (TCC) operation |
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| DESCRIPTION | Vehicle jolts when TCC is engaged. |
| POSSIBLE CAUSE | Poor TCC engagement due to either slippage because the TCC piston is stuck or the line pressure is low. 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 throttle position signal Incorrect accelerator pedal position signal Incorrect engine speed signal Incorrect engine coolant temperature signal Incorrect engine torque signal VSS malfunction Turbine sensor malfunction Sensor GND malfunction TCC control solenoid malfunction Control valve body malfunction Torque converter malfunction |
| 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. |
POSSIBLE CAUSE DESCRIPTION
NO. 19 EXCESSIVE SHIFT SHOCK ON TORQUE CONVERTER CLUTCH (TCC) [SJ6A-EL]
| 19 | Excessive shift shock on torque converter clutch (TCC) |
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| DESCRIPTION | Strong shock is felt when the TCC is engaged. |
| POSSIBLE CAUSE | The troubleshooting flow is the same as "NO. 16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION". (See «NO. 16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [SJ6A-EL]» ) |
POSSIBLE CAUSE DESCRIPTION
