Acura TSX / Honda Accord CL. Manual — part 541

Fig. 7: Disconnecting The Vacuum Hose From The EVAP Canister Purge Valve

7. Start the engine and let it idle.

Is there vacuum?

YES: Go to step 8.

NO: Go to step 14 .

8. Turn the ignition switch OFF.

9. Disconnect the EVAP canister purge valve 2P connector.

10. Check for continuity between EVAP canister purge valve 2P connector No. 2 and body ground.

Is there continuity?

YES: Go to step 11.

NO: Go to step 24 .

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 8: Checking For Continuity Between EVAP Canister Purge Valve 2P Connector No. 2 &
Body Ground

11. Jump the SCS line with the HDS.

12. Disconnect ECM/PCM connector B (24P).

13. Check for continuity between EVAP canister purge valve 2P connector terminal No. 2 and body ground.

Is there continuity?

YES: Repair short in the wire between the EVAP canister purge valve and the ECM/PCM
(B21), then go to step 25 .

NO: Go to step 31 .

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 9: Checking For Continuity Between EVAP Canister Purge Valve 2P Connector No. 2 &
Body Ground

14. Turn the ignition switch OFF.

15. Disconnect the EVAP canister purge valve 2P connector.

16. Turn the ignition switch ON (II).

17. Measure voltage between EVAP canister purge valve 2P connector terminal No. 1 and body ground.

Is there battery voltage?

YES: Go to step 18.

NO: Repair open in the wire between the EVAP canister purge valve and the No. 18 ACG
(15A) fuse in the under-dash fuse/relay box, then go to step 26 .

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX

Fig. 10: Measuring Voltage Between EVAP Canister Purge Valve 2P Connector Terminal No.
1 & Body Ground

18. Turn the ignition switch OFF.

19. Jump the SCS line with the HDS.

20. Disconnect ECM/PCM connector B (24P).

21. Connect EVAP canister purge valve 2P connector terminal No. 2 to body ground with a jumper wire.

2004 Acura TSX

2004 ENGINE PERFORMANCE EVAP System - TSX