| Fault code No. | 13 |
| Symptom | Open or short circuit of intake air pressure sensor lead |
| Fail-safe action | Engine startup: Possible |
| Riding: Possible | |
| Diagnostic monitoring code No. | D:03 |
| Meter display | Displays the intake air pressure. |
| Checking method | Set the engine stop switch to " ", and then push the start switch " ". (If the display value changes, the performance is OK.) |
| Item/components and probable cause | Check or maintenance job | Sensor inspection procedure | |
| 1 | Connection of intake air pressure sensor 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 repair/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 repair/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. |
| 3 | Continuity of wire harness | Open or short circuit → Replace the wire harness. Black/Blue-Black/Blue. Pink/White-Pink/White. Blue-Blue | 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 | Sensor installation status: Check the mounting section for loose or pinched mounting. | Incorrect installation → Reinstall or repair the sensor. | 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 | Intake air pressure sensor malfunction | Check in the diagnostic mode (Code No. 03). When engine is stopped: Atmospheric pressure at the current altitude and weather conditions is indicated. 0 m above sea level: Approx. 101 kPa 1000 m above sea level: Approx. 90 kPa 2000 m above sea level: Approx. 80 kPa 3000 m above sea level: Approx. 70 kPa When engine is cranking: Make sure that the indication value changes. Incorrect indication → Sensor malfunction → Replace the intake air pressure sensor. Sensor inspection procedure Refer to "Checking the intake air pressure sensor". | 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. |