P0452
DTC P0452: FTP Sensor Circuit Low Voltage1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch OFF.
4. Remove the fuel fill cap.
5. Turn the ignition switch ON (II).
6. Check the FTP SENSOR in the DATA LIST with the HDS.
Is about -7.3 kPa (-2.16 in.Hg, -55 mmHg) or 0.3 V, or less indicated?
YES - Go to step 10.
NO - Go to step 7.
7. Install the fuel fill cap.
8. Start the engine.
9. Monitor the OBD STATUS for DTC P0452 in the DTCs MENU with the HDS;
Does the screen indicate FAILED?
YES - Go to step 10.
NO - If the screen indicates PASSED, intermittent failure, system is OK at this time. If the screen indicates NOT COMPLETED, go to step 8 and recheck.
10. Turn the ignition switch OFF.
11. Disconnect the FTP sensor 3P connector.
12. Turn the ignition switch ON (II).
13. Check the FTP SENSOR in the DATA LIST with the HDS.
Is about -7.3 kPa (-2.16 in.Hg, -55 mmHg) or 0.3 V, or more indicated?
YES - Go to step 24.
NO - Go to step 14.
14. Measure voltage between FTP sensor 3P connector terminal No.1 and body ground.
Is there about 5 V?
YES - Go to step 20.
NO - Go to step 15.
15. Turn the ignition switch OFF.
16. Jump the SCS line with the HDS.
17. Disconnect PCM connector A (44P).
18. Connect FTP sensor 3P connector terminal No.1 to body ground with a jumper wire.
19. Check for continuity between PCM connector terminal A19 and body ground.
Is there continuity?
YES - Go to step 33,
NO - Repair open in the wire between the PCM (A19) and the FTP sensor, then go to step 26.
20. Turn the ignition switch OFF.
21. Jump the SCS line with the HDS.
22. Disconnect PCM connector A (44P).
23. Check for continuity between the FTP sensor 3P connector terminal No.3 and body ground.
Is there continuity?
YES - Repair short in the wire between the PCM (A33) and the FTP sensor, then go to step 26.
NO - Go to step 33.
24. Turn the ignition switch OFF.
25. Replace the FTP sensor.
26. Reconnect PCM connector A (44P).
27. Reconnect the FTP sensor 3P connector.
28. Turn the ignition switch ON (II).
29. Reset the PCM with the HDS.
30. Do the PCM idle learn procedure.
31. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0452 is indicated, check for poor connections or loose terminals at the FTP sensor and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - Go to step 32.
32. Monitor the OBD STATUS for DTC P0452 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete.
NO - If the screen indicates FAILED, check for poor connections or loose terminals at the FTP sensor and the PCM, then go to step 1. If the screen indicates NOT COMPLETED, go to step 30 and recheck.
33. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
34. Check for Temporary DTCs in the DTCs MENU with the HDS.
Are any Temporary DTCs indicated?
YES - If DTC P0452 is indicated, check for poor connections or loose terminals at the FTP sensor and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM.