| Fault code No. | 66 |
| Symptom | Open or short circuit of steering damper solenoid lead |
| Fail-safe action | Engine startup: Possible |
| Riding: Possible | |
| Diagnostic monitoring code No. | D:47 |
| Meter display | The steering damper warning light lights up. |
| Checking method | The engine warning light flashes according to the ON/OFF switching. |
| Item/components and probable cause | Check or maintenance job | Sensor inspection procedure | |
| 1 | Connection of steering damper solenoid coupler Check the connection of the coupler is secure. Remove the coupler, and check each pin (for bending, wear, or locking). | Poor connection → Connect it securely, or replace the wire harness. | Place the main switch to the ON position, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
| 2 | Connection of main harness ECU coupler. Check the connection of the coupler is secure. Remove the coupler, and check each pin (for bending, wear, or locking). | Poor connection → Connect it securely, or replace the harness. | Place the main switch to the ON position, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
| 3 | Check the steering damper fuse. | Abnormality → Replace the steering damper fuse. | Place the main switch to the ON position, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
| 4 | Continuity of wire harness | Open or short circuit → Replace the wire harness. Red/White-Red/White Violet-Violet | Place the main switch to the ON position, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
| 5 | Steering damper solenoid malfunction | Refer to "Checking the steering damper solenoid". | Place the main switch to the ON position, and check the fault code indication. No fault code indicated. → Recovered. Fault code indicated. → Check the next step. |
| 6 | ECU malfunction | Replace the ECU. |