Honda Civic. Manual — part 621

Courtesy of AMERICAN HONDA MOTOR CO., INC.

21. Turn the ignition switch ON (II).
22. Check the FTP SENSOR in the DATA LIST with the HDS.

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

YES - Check for debris or clogging at the EVAP canister and the FTP sensor
port, then go to step 23.

NO - Replace the FTP sensor (see FTP SENSOR REPLACEMENT ), then
go to step 23.

23. Turn the ignition switch ON (II).
24. Reset the ECM/PCM with the HDS.
25. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN

PROCEDURE ).

26. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or

neutral) until the radiator fan comes on, then let it idle.

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

If DTC P1454 and/or P2422 indicated?

YES - Check for poor connections or loose terminals at the FTP sensor, the
EVAP canister vent shut valve, and the ECM/PCM, then go to step 1.

NO - Go to step 28.

28. Monitor the OBD STATUS for DTC P1454 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 27, go to the indicated DTCs troubleshooting.

2008 Honda Civic EX

2006-08 ENGINE PERFORMANCE EVAP System (R18A1) - Civic (All Except Hybrid)

NO - If the screen indicates FAILED, check for poor connections or loose
terminals at the FTP sensor, the EVAP canister vent shut valve, and the
ECM/PCM, then go to step 1. If the screen indicates NOT COMPLETED, keep
idling until a result comes on.

EVAP CANISTER REPLACEMENT

1. Remove the cover (A).

Fig. 36: Removing Cover
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. Remove the EVAP canister guard pipe (A).

Fig. 37: Removing EVAP Canister Guard Pipe (With Specifications)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2008 Honda Civic EX

2006-08 ENGINE PERFORMANCE EVAP System (R18A1) - Civic (All Except Hybrid)

3. Remove the hoses (A), the FTP sensor connector (B), the EVAP canister vent

shut valve connector (C) and the bolts (D).

Fig. 38: Removing Hoses, FTP Sensor Connector, EVAP Canister Vent
Shut Valve Connector And Bolts (With Specifications)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Remove the EVAP canister.
5. Remove the cap (A).

2008 Honda Civic EX

2006-08 ENGINE PERFORMANCE EVAP System (R18A1) - Civic (All Except Hybrid)

Fig. 39: Removing Cap
Courtesy of AMERICAN HONDA MOTOR CO., INC.

6. Remove the EVAP canister vent shut valve (B).
7. Install the EVAP canister vent shut valve in the new EVAP canister with new

O-rings (C).

8. Install the parts in the reverse order of removal.

FTP SENSOR REPLACEMENT

1. Remove the cover (see step 1 in EVAP CANISTER REPLACEMENT ).
2. Disconnect the FTP sensor connector (A).

NOTE:

Do not coat the O-rings with oil.

2008 Honda Civic EX

2006-08 ENGINE PERFORMANCE EVAP System (R18A1) - Civic (All Except Hybrid)