Acura TSX / Honda Accord CL. Manual — part 543

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 (-55 mm Hg, -2.16 in. Hg), 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 5 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 (54.7 mm Hg, 2.15 in. Hg), 4.90 V indicated?

YES: Go to step 20 .

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 16 .

NO: Go to step 15.

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 14: Measuring Voltage Between FTP Sensor 3P Connector Terminal No. 1 & Body
Ground

15. Measure voltage between ECM/PCM connector terminal E5 and body ground.

Is there 5 V?

YES: Repair open in the wire between the ECM/PCM (E5) and the FTP sensor, then go to
step 23 .

NO: Go to step 29 .

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 15: Measuring Voltage Between ECM/PCM Connector Terminal E5 & Body Ground

16. Turn the ignition switch OFF.

17. Jump the SCS line with the HDS.

18. Disconnect ECM/PCM connector E (31P).

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

Is there continuity?

YES: Repair short in the wire between the ECM/PCM (E14) and the FTP sensor, then go to
step 22 .

NO: Go to step 29 .

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 16: Checking For Continuity Between FTP Sensor 3P Connector Terminal No. 2 & Body
Ground

20. Turn the ignition switch OFF.

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

22. Reconnect the ECM/PCM connectors.

23. Reconnect the FTP sensor 3P connector.

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX