Symptoms and causes: Inspection
CAUTION:
Check the control operation history. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>WORK SUPPORT>OPERATION
.
| Symptoms | Problem parts etc. | Possible cause |
|---|---|---|
| The engine speed rises but the vehicle cannot accelerate. (The clutch slips.) | Clutch disc | Clutch disc wear, seizure, or oil contamination |
| Clutch cover | Diaphragm spring damage or fatigue | |
| Flywheel | Flywheel distortion, seizure, or oil contamination | |
| Clutch pedal | Improper stroke adjustment | |
| The clutch does not disengage. | Clutch disc | Clutch disc misalignment, runout, facing surface damage, dirt, seizure, oil contamination, or improper spline portion lubrication |
| Clutch cover | Diaphragm spring damage or fatigue | |
| Master cylinder | Faulty master cylinder | |
| Operating cylinder | Faulty operating cylinder | |
| Clutch fluid | Air entry in fluid | |
| Clutch pipe | Clutch fluid leaks or clogs | |
| Clutch hose | Clutch fluid leaks or clogs | |
| Clutch pedal | Improper stroke adjustment | |
| Vibrations occur when the clutch is engaged. | Clutch disc | Clutch disc runout, oil contamination, wear, or damage |
| Clutch cover | Uneven diaphragm spring height | |
| Flywheel | Flywheel distortion, uneven wear, or seizure | |
| Transmission rear crossmember | Loose transmission rear crossmember | |
| Noise is emitted. | Release bearing | Release bearing wear, dirt, or damage |
| Pilot bearing | Pilot bearing wear, dirt, or damage | |
| Clutch disc | Clutch disc damage | |
| Release lever | Improper release lever lubrication | |
| It is difficult to change gears. | Clutch disc | Faulty clutch disc |
| Clutch cover | Diaphragm spring damage or uneven height | |
| Master cylinder | Faulty master cylinder | |
| Operating cylinder | Faulty operating cylinder | |
| Clutch fluid | Air entry in fluid | |
| Clutch pipe | Clutch fluid leaks or clogs | |
| Clutch hose | Clutch fluid leaks or clogs | |
| Clutch pedal | Improper stroke adjustment | |
| The clutch does not engage. | Clutch disc | Clutch disc misalignment, runout. facing surface damage, dirt, seizure, oil contamination, or improper spline portion lubrication |
| Clutch cover | Diaphragm spring damage or uneven height | |
| Master cylinder | Faulty master cylinder | |
| Operating cylinder | Faulty operating cylinder | |
| Clutch fluid | Air entry in fluid | |
| Clutch pipe | Clutch fluid leaks or clogs | |
| Clutch hose | Clutch fluid leaks or clogs | |
| Clutch pedal | Improper stroke adjustment | |
| Clutch pedal is not responsive when depressed. | Master cylinder | Faulty master cylinder |
| Operating cylinder | Faulty operating cylinder | |
| Clutch fluid | Air entry in fluid | |
| Clutch pipe | Clutch fluid leaks | |
| Clutch hose | Clutch fluid leaks | |
| Clutch cover | Diaphragm spring damage |