Acura RL. Manual - part 481

Fig. 9: Measuring Voltage Between FTP Sensor 3P Connector Terminal No. 1 And Body 
Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 5 V?  

YES - Go to step 16. 

NO - Go to step 15. 

15. Measure voltage between PCM connector terminal E12 and body ground. 

Fig. 10: Measuring Voltage Between PCM Connector Terminal E12 And Body Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 5 V?  

YES - Repair open in the wire between the PCM (E12) and the FTP sensor, then go to step 22. 

NO - Go to step 28. 

16. Turn the ignition switch OFF.  

17. Jump the SCS line with the HDS.  

18. Disconnect PCM connector E (31P).  

19. Check for continuity between FTP sensor 3P connector terminal No. 2 and body ground. 

 

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2005-08 ENGINE PERFORMANCE EVAP System - RL

  

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Fig. 11: Checking Continuity Between FTP Sensor 3P Connector Terminal No. 2 And Body 
Ground 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Repair short in the wire between the PCM (E29) and the FTP sensor, then go to step 22. 

NO - Go to step 28. 

20. Turn the ignition switch OFF.  

21. Replace the FTP sensor (see FTP SENSOR REPLACEMENT ).  

22. Reconnect all connectors.  

23. Turn the ignition switch ON (II).  

24. Reset the PCM with the HDS.  

25. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).  

26. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P0452 indicated?  

YES - Check for poor connections or loose terminals at the FTP sensor and the PCM, then go to step 
1. 

NO - Go to step 27. 

27. Monitor the OBD STATUS for DTC P0452 in the DTCs MENU with the HDS. 

Does the screen indicate PASSED?  

YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 26, 
go to the INDICATED DTCS TROUBLESHOOTING. 

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, keep idling until a result 
comes on. 

28. Reconnect all connectors.  

29. Update the PCM if it does not have the latest software (see UPDATING THE PCM ), or substitute a 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE EVAP System - RL

  

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© 2005 Mitchell Repair Information Company, LLC. 

known-good PCM (see SUBSTITUTING THE PCM ).

30. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P0452 indicated?  

YES - Check for poor connections or loose terminals at the FTP sensor and the PCM. If the PCM was 
updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the 
PCM was substituted, go to step 1. 

NO - Go to step 31. 

31. Monitor the OBD STATUS for DTC P0452 in the DTCs MENU with the HDS. 

Does the screen indicate PASSED?  

YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the 
original PCM (see PCM REPLACEMENT ). If any other Temporary DTCs or DTCs were indicated 
in step 30, go to the INDICATED DTCS TROUBLESHOOTING. 

NO - If the screen indicates FAILED, check for poor connections or loose terminals at the FTP sensor 
and the PCM. If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE 
PCM ), then recheck. If the PCM was substituted, go to step 1. If the screen indicates NOT 
COMPLETED, keep idling until a result comes on. 

DTC P0453: FTP SENSOR CIRCUIT HIGH VOLTAGE 

1. 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 4.7 V or more 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 P0453 in the DTCs MENU with the HDS. 

Does the screen indicate FAILED?  

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, 
and review the general troubleshooting information (see GENERAL 
TROUBLESHOOTING INFORMATION ).

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE EVAP System - RL

  

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YES - Go to step 10. 

NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for 
poor connections or loose terminals at the FTP sensor and the PCM. If the screen indicates NOT 
COMPLETED, go to step 6 and recheck. 

10. Turn the ignition switch OFF.  

11. Disconnect the FTP sensor 3P connector.  

12. Connect FTP sensor 3P connector terminals No. 2 and No. 3 with a jumper wire. 

Fig. 12: Connecting FTP Sensor 3P Connector Terminals No. 2 And No. 3 With Jumper Wire 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

13. Turn the ignition switch ON (II).  

14. Check the FTP SENSOR in the DATA LIST with the HDS. 

Is about 7.3 kPa (2.16 in.Hg, 55 mmHg), or 4.7 V or more indicated?  

YES - Go to step 15. 

NO - Go to step 25. 

15. Measure voltage between FTP sensor 3P connector terminals No. 1 and No: 3. 

Fig. 13: Measuring Voltage Between FTP Sensor 3P Connector Terminals No. 1 And No: 3 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there about 5 V?  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE EVAP System - RL

  

me 

 

Friday, June 05, 2009 2:30:48 PM

Page 12 

© 2005 Mitchell Repair Information Company, LLC.