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Acura RSX Honda Integra. Manual - part 187

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０１

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DTC P1454:

DTC P2422:

YES

11-454

EVAP System

DTC Troubleshooting (cont’d)

FTP Sensor Circuit Range/

Performance Problem
(2005-2006 models)

EVAP Canister Vent Shut Valve

Stuck Closed Malfunction
(2005-2006 models)

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. Check the FTP SENSOR in the DATA LIST with the

HDS.

Go to step 6.

Go to step 17.

6. Install the fuel fill cap.

7. Clear the DTC with the HDS.

8. 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.

9. Monitor the OBD STATUS for DTC P1454 or P2422

in the DTCs MENU with the HDS.

Go to step 10.

If the screen indicates PASSED, 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. If the screen indicates NOT COMPLETED, go
to step 7 and recheck.

10. Clear the DTC with the HDS.

11. Turn the ignition switch OFF.

12. Remove the EVAP canister vent shut valve from the

EVAP canister (see page 11-474).

13. Connect the 2P connector to the EVAP canister vent

shut valve.

14. Turn the ignition switch ON (II).

15. Do the EVAP CVS ON in the INSPECTION MENU

with the HDS.

16. Check the EVAP canister vent shut valve (A)

operation.

Check for a blockage in the EVAP canister,

and install the EVAP canister vent shut valve, then
go to step 23.

Replace the EVAP canister vent shut valve

(see page 11-474), then go to step 23.

Is it between

0.67 kPa and 0.67 kPa (

0.2

in.Hg,

5 mmHg), or 2.4

2.6 V ?

Does the scr een indicate F AILED?

Does the valve oper ate?

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YES

11-455

17. Disconnect the air tube (A) from the FTP sensor (B).

18. Check the FTP SENSOR in the DATA LIST with the

HDS.

Check for a blockage in the FTP sensor air

tube, then go to step 23.

Go to step 19.

19. Turn the ignition switch OFF.

20. Remove the FTP sensor (A) from the EVAP canister

with its connector connected.

21. Turn the ignition switch ON (II).

22. Check the FTP SENSOR in the DATA LIST with the

HDS.

Check for debris or clogging at the EVAP

canister and the FTP sensor port, then go to step 23.

Replace the FTP sensor (see page 11-473),

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 page

11-349).

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 is indicated, check

for poor connections or loose terminals at the FTP
sensor, or 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’s troubleshooting.

Go to step 28.

(cont’d)

Is it between

0.67 kPa and 0.67 kPa (

0.2

in.Hg,

5 mmHg), or 2.4

2.6 V ?

Is it between

0.67 kPa and 0.67 kPa (

0.2

in.Hg,

5 mmHg), or 2.4

2.6 V ?

Ar e any T empor ar y DT Cs or DT Cs indicated?

05/06/27 17:44:49 61S6M040_110_0455

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YES

11-456

EVAP System

DTC Troubleshooting (cont’d)

28. Monitor the OBD STATUS for DTC P1454 in the

DTCs MENU with the HDS.

Troubleshooting is complete.

If the screen indicates FAILED, check for poor

connections or loose terminals at the FTP sensor,
or the EVAP canister vent shut valve and the ECM/
PCM, then go to step 1. If the screen indicates NOT
COMPLETED, go to step 26 and recheck.

Does the scr een indicate PASSED?

05/06/27 17:44:49 61S6M040_110_0456

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DTC P1456:

Special Tools Required

Fuel Fill Cap Check

YES

EVAP Canister Purge Valve Test

YES

11-457

EVAP Control System Leakage

(Fuel Tank System)
(2002-2004 models)

The fuel system is designed to allow specified
maximum vacuum and pressure conditions. Do not
deviate from the vacuum and pressure tests as
indicated in these procedures. Excessive pressure/
vacuum would damage the EVAP components or
cause eventual fuel tank failure.

Vacuum pump/gauge, 0

30 in.Hg, Snap-on YA4000A

or equivalent, commercially available

Please note that this is a two-trip code. Once cleared, it
cannot be reproduced in one trip. Also, certain specific
driving and ambient conditions must occur before the
ECM/PCM will complete the system checks. Additional
test drives may still not meet the specific conditions
needed to reproduce the code.

Follow these troubleshooting procedures carefully to
ensure the integrity of the system and to comfirm the
cause of the problem or code.

NOTE: Fresh fuel has a higher volatility that will create
greater pressure/vacuum. The optimum condition for
testing is fresh fuel, and must be less than a full tank of
gas. If possible, to assist in leak detection, add 1 gallon
of fresh fuel to the tank (as long as it will not fill the
tank), just before starting these procedures.

1. Check the fuel fill cap (the cap must say ‘‘If not

tightened 3 clicks check engine light may come
on’’).

Go to step 2.

Replace or tighten the cap.

2. Check the fuel fill cap seal and the fuel fill pipe

sealing surface.

Replace the fuel fill cap (gray or black

colored cap), or the fuel fill pipe.

The fuel fill cap is OK. Go to step 3.

3. Disconnect the vacuum hose from the EVAP

canister purge valve (A), and connect the vacuum
pump/gauge, 0

30 in.Hg, to the hose.

4. Turn the ignition switch ON (II).

5. Apply vacuum to the hose.

The EVAP canister purge valve is OK. Go to

step 11.

Go to step 6.

6. Turn the ignition switch OFF.

7. Disconnect the EVAP canister purge valve 2P

connector.

(cont’d)

Is the pr oper f uel f ill cap installed and pr oper ly
tightened?

Is the f uel f ill cap seal missing or damaged, or is
the f ill pipe damaged?

Does the valve hold vacuum?

05/06/27 17:44:49 61S6M040_110_0457

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