| DTC P0223: | TP Sensor B Circuit High Voltage |
| 1. | Turn the ignition switch ON (II). |
| 2. | Clear the DTC with the HDS. |
| 3. | Check TP SENSOR B in the DATA LIST with the HDS. Is there about 4.8 V or more? YES - Go to 4. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the throttle body and the ECM.n |
| 4. | Check for Temporary DTCs or DTCs with the HDS. Are DTC P0123 and P0223 indicated at the same time? YES - Go to 13. NO - Go to 5. |
| 5. | Turn the ignition switch OFF. |
| 6. | Disconnect the throttle body 6P connector. |
| 7. | Turn the ignition switch ON (II). |
| 8. | Measure voltage between throttle body 6P connector terminal No. 3 and body ground.
Is there about 5 V? YES - Go to 18. NO - Go to 9. |
| 9. | Turn the ignition switch OFF. |
| 10. | Jump the SCS line with the HDS. |
| 11. | Disconnect ECM connector C (44P). |
| 12. | Check for continuity between ECM connector terminal C21 and throttle body 6P connector terminal No. 3.
Is there continuity? YES - Go to 25. NO - Repair open in the wire between the throttle body and the ECM (C21), then go to 20. |
| 13. | Turn the ignition switch OFF. |
| 14. | Disconnect the throttle body 6P connector. |
| 15. | Jump the SCS line with the HDS. |
| 16. | Disconnect ECM connector C (44P). |
| 17. | Check for continuity between ECM connector terminal C39 and throttle body 6P connector terminal No. 4.
Is there continuity? YES - Go to 25. NO - Repair open in the wire between the throttle body and the ECM (C39), then go to 20. |
| 18. | Turn the ignition switch OFF. |
| 19. | Replace the throttle body. |
| 20. | Reconnect all connectors and the battery. |
| 21. | Turn the ignition switch ON (II). |
| 22. | Reset the ECM with the HDS. |
| 23. | Do the ECM idle learn procedure. |
| 24. | Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P0223 is indicated, check for poor connections or loose terminals at the throttle body and the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Troubleshooting is complete.n |
| 25. | Update the ECM if it does not have the latest software, or substitute a known-good ECM. |
| 26. | Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P0223 is indicated, check for poor connections or loose terminals at TP sensor B and the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM.n |