| DTC P2128: | APP sensor B (Throttle Position Sensor E) Circuit High Voltage |
| 1. | Turn the ignition switch ON (II). |
| 2. | Check the APP SENSOR-B in the DATA LIST with the Honda PGM Tester or the HDS. Is there about 100 % or 4.9 V or more? YES - Go to 3. NO - Intermittent failure, system is OK at this time. |
| 3. | Turn the ignition switch OFF. |
| 4. | Disconnect the APP sensor 6P connector. |
| 5. | Turn the ignition switch ON (II). |
| 6. | At wire harness side, measure voltage between the APP sensor 6P connector terminals No.1 and No. 2. Is there about 5 V? YES - Go to 8. NO - Go to 7. |
| 7. | Measure voltage between ECM/PCM connector terminals A20 and A23. Is there about 5 V? YES - Repair open in the wire between the ECM/PCM (A23) and the APP sensor B, then go to 10. NO - Go to 14. |
| 8. | Turn the ignition switch OFF. |
| 9. | Replace the APP sensor. |
| 10. | Turn the ignition switch ON (II). |
| 11. | Do the ECM/PCM RESET in the CLEAR MENU with the Honda PGM Tester or the HDS. |
| 12. | Do the ECM/PCM idle learn procedure. |
| 13. | Check for Temporary DTCs or DTCs in the DTCs MENU with the Honda PGM Tester or the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P2128 is indicated, check for poor connections or loose terminals at the APP sensor B and the ECM/PCM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC troubleshooting. NO - Troubleshooting is complete.n |
| 14. | Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM. |
| 15. | Check for Temporary DTCs or DTCs in the DTCs MENU with the Honda PGM Tester or the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P2128 is indicated, check for poor connections or loose terminals at the APP sensor B and the ECM/PCM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC troubleshooting. NO - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM.n |