Tech Tips
When a malfunction cannot be confirmed by conducting a DTC check and the cause of the problem cannot be identified through a basic inspection, troubleshoot according to the priority order indicated in the table below.
Inspect the fuse and relay before confirming the suspected areas as shown in the chart below.
Note
When removing the following parts, perform the operations correctly by following the precautions on the relevant pages.
| Symptom | Suspected area | See page |
|---|---|---|
| No up-shift, No down-shift | 1. Transmission | |
| 2. Clutch disk (Clutch cover) | ||
| 3. Clutch stroke sensor | ||
| 4. Clutch actuator assembly | ||
| 5. Shift stroke sensor | ||
| 6. Select stroke sensor | ||
| 7. Shift and select actuator | ||
| 8. Shift lever position sensor | ||
| 9. Shift lever assembly | ||
| 10. Speed signal circuit | ||
| 11. Transmission control ECU | ||
| Multi-mode manual transmission warning light defective | 1. Multi-mode manual transmission warning light circuit | |
| 2. IG signal circuit | ||
| 3. ECU power source circuit | ||
| 4. Transmission control ECU | ||
| Shift position indicator light defective | 1. Multi-mode manual transmission warning light circuit | |
| 2. IG signal circuit | ||
| 3. Transmission control ECU | ||
| Multi-mode manual transmission system buzzer does not sound (when incorrect operation occurs) | 1. Transmission control ECU | |
| Shift impossible to any gear | 1. Transmission | |
| 2. Shift stroke sensor | ||
| 3. Select stroke sensor | ||
| 4. Shift and select actuator | ||
| 5. Shift lever position sensor | ||
| 6. Clutch disc (Clutch cover) | ||
| 7. Clutch stroke sensor | ||
| 8. Clutch actuator assembly | ||
| 9. Transmission control ECU | ||
| Too much time lag when changing gear position | 1. Transmission | |
| 2. Clutch disc (Clutch cover) | ||
| 3. Clutch stroke sensor | ||
| 4. Clutch actuator assembly | ||
| 5. Shift stroke sensor | ||
| 6. Select stroke sensor | ||
| 7. Shift and select actuator | ||
| 8. Shift lever position sensor | ||
| 9. Shift lock solenoid circuit | ||
| 10. Shift lever assembly | ||
| 11. Speed signal circuit | ||
| 12. Transmission control ECU | ||
| Engine stalls when starting off or stopping | 1. Transmission revolution sensor | |
| 2. Transmission control ECU | ||
| Gear not automatically shifted up or down during E mode driving | 1. CAN communication circuit | |
| 2. Transmission control ECU | ||
| Mode switch impossible (from E to M) | 1. Transmission shift main switch | |
| 2. Shift lever assembly | ||
| 3. Transmission control ECU | ||
| Setting to 1st or R positions impossible | 1. Shift lever position sensor | |
| 2. Transmission control ECU | ||
| Shift timing delays occur during M mode driving | 1. Accelerator pedal position sensor | |
| 2. Transmission control ECU | ||
| Engine does not start | 1. SFI system | |
| 2. Starter circuit | ||
| 3. Park/neutral position switch | ||
| 4. Stop light switch | ||
| 5. Shift position sensor | ||
| 6. Starter assembly (for standard) | ||
| 7. Starter assembly (for cold area) | ||
| 7. Transmission control ECU | ||
| Assist control does not operate when engine started | 1. Parking brake switch circuit | |
| 2. Transmission control ECU | ||
| Noise | 1. Oil (Level low) | |
| 2. Oil (Wrong) | ||
| 3. Gear (Worn or damaged) | ||
| 4. Bearing (Worn or damaged) | ||
| Oil leakage | 1. Oil (Level too high) | |
| 2. Gasket (Damaged) | ||
| 3. Oil seal (Worn or damaged) | ||
| 4. O-ring (Worn or damaged) | ||
| Hard or impossible to shift | 1. Synchronizer ring (Worn or damaged) | |
| 2. Shift key spring (Damaged) | ||
| Jumps out of gear | 1. Shift fork (Worn) | |
| 2. Gear (Worn or damaged) | ||
| 3. Bearing (Worn or damaged) |