Acura TSX / Honda Accord CL. Manual — part 545

Fig. 19: Connecting FTP Sensor Connector Terminal No. 2 To Body Ground With A Jumper Wire

19. Check for continuity between ECM/PCM connector terminal E14 and body ground.

Is there continuity?

YES: Go to step 29 .

NO: Repair open in the wire between the ECM/PCM (E14) and the FTP sensor, then go to
step 22 .

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 20: Checking For Continuity Between ECM/PCM Connector Terminal E14 & Body
Ground

20. Turn the ignition switch OFF.

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

22. Reconnect ECM/PCM connector E (31P).

23. Reconnect the FTP sensor 3P connector.

24. Turn the ignition switch ON (II).

25. Reset the ECM/PCM with the HDS.

26. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).

27. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Are any Temporary DTCs or DTCs indicated?

YES: If DTC P0453 is indicated, check for poor connections or loose terminals at the FTP
sensor and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are
indicated, go to the indicated DTC troubleshooting.

NO: Go to step 28.

28. Monitor the OBD STATUS for DTC P0453 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 ECM/PCM, then go to step 1 . If the screen indicates NOT
COMPLETED, go to step 26 and recheck.

29. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see

HOW TO SUBSTITUTE THE ECM/PCM ).

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

Are any Temporary DTCs or DTCs indicated?

YES: If DTC P0453 is indicated, check for poor connections or loose terminals at the FTP
sensor and the ECM/PCM, then go to step 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 (see HOW TO REMOVE THE ECM/PCM
FOR TESTING ).

DTC P0457: EVAP SYSTEM LEAK DETECTED/FUEL CAP LOOSE OR MISSING

1. Check the fuel fill cap (the cap must say "If not tightened 3 clicks check engine light may come on").

Is the correct fuel fill cap installed and properly tightened?

YES: Go to step 2.

NO: Replace or tighten the cap, then go to step 19 .

2. Check the fuel fill cap seal (A) and the fuel fill pipe mating surface (B). Verify that the fuel fill cap tether

cord (C) is not caught under the cap.

Is the fuel fill cap seal missing or damaged, is the fuel fill pipe damaged, or is the tether cord
caught under the cap?

YES: Replace the fuel fill cap or the fuel fill pipe, then go to step 19 .

NO: Go to step 3.

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 21: Checking The Fuel Fill Cap Seal & The Fuel Fill Pipe Mating Surface

3. Turn the ignition switch ON (II).

4. Clear the DTC with the HDS.

5. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.

Is the result OK?

YES: Intermittent failure, system is OK at this time. Check for poor connections or loose
terminals at the FTP sensor or the EVAP canister vent shut valve and the ECM/PCM.

NO: Go to step 6.

6. Turn the ignition switch OFF.

7. Remove the EVAP canister vent shut valve from the EVAP canister (see EVAP CANISTER VENT

SHUT VALVE REPLACEMENT ).

8. Connect the 2P connector to the EVAP canister vent shut valve.

9. Turn the ignition switch ON (II).

10. Do the EVAP CVS ON in the INSPECTION MENU with the HDS.

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX