Acura TSX / Honda Accord CL. Manual — part 549

Fig. 31: Connecting EVAP Canister Vent Shut Valve 2P Connector Terminal No. 1 To Body
Ground With A Jumper Wire

14. Check for continuity between ECM/PCM connector terminal E19 and body ground.

Is there continuity?

YES: Go to step 23 .

NO: Repair open in the wire between the EVAP canister vent shut valve and the ECM/PCM
(E19), then go to step 16 .

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 32: Checking For Continuity Between ECM/PCM Connector Terminal E19 & Body
Ground

15. Replace the EVAP canister vent shut valve (see EVAP CANISTER VENT SHUT VALVE

REPLACEMENT ).

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

17. Reconnect the EVAP canister vent shut valve 2P connector.

18. Turn the ignition switch ON (II).

19. Reset the ECM/PCM with the HDS.

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

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

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

Are any Temporary DTCs or DTCs indicated?

YES: If DTC P0499 is indicated, check for poor connections or loose terminals at the EVAP
canister vent shut valve 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: Troubleshooting is complete.

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

23. 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 ).

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

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

Are any Temporary DTCs or DTCs indicated?

YES: If DTC P0499 is indicated, check for poor connections or loose terminals at the EVAP
canister vent shut valve 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 P1454: FTP SENSOR RANGE/PERFORMANCE PROBLEM

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, and wait 1 minute.

5. Turn the ignition switch ON (II).

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

Is it between -0.67 kPa and 0.67 kpa (-5 and 5 mm Hg, -0.2 and 0.2 in. Hg), or 2.4-2.6 V?

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

NO: Go to step 7.

7. Remove the FTP sensor (A) from the EVAP canister with its connector connected (see FTP SENSOR

REPLACEMENT ).

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 33: Removing The FTP Sensor From The EVAP Canister

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

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX