2006 ACURA CSX engine

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YES
NO YES
NO
YES
NO
11-389
A
B
C
23. Reconnect the vacuum hose (engine side) (A) to theEVAP canister purge valve (B) and disconnect the
vacuum hose (EVAP canister side) (C) from the
EVAP canister purge valve, then connect a vacuum
pump/gauge 0 30 in.Hg, to the vacuum hose as
shown.
24. Select EVAP CVS ON in the INSPECTION MENU with the HDS.
25. Apply vacuum to the EVAP system until the FTP reads 1.90 V ( 0.59 in.Hg, 15.1 mmHg).
NOTE: Be careful not to exceed the vacuum. If you
do, the FTP sensor can be damaged.
26. Monitor the FTP SENSOR in the DATA LIST for 1 minute with the HDS.
Replace the EVAP canister vent shut valve
(see page 11-409), then go to step 29.
Go to step 27.
27. Select EVAP CVS OFF in the INSPECTION MENU. 28. Check these parts for looseness or damage:
 Fuel fill pipe
 Fuel vapor return pipe
Check the fuel tank unit base gasket
(see page 11-335), and check the fuel tank, then go
to step 29.
Repair or replace the damaged parts, then go
to step 29.
29. Reconnect all hoses and connectors.
30. Turn the ignition switch to ON (II).
31. Reset the ECM/PCM with the HDS.
32. Do the ECM/PCM idle learn procedure (see page 11-310).
33. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.
Check for poor connections or loose terminals
at the FTP sensor, the EVAP canister purge valve,
the EVAP canister vent shut valve, and the ECM/
PCM, then go to step 1.
*: This illustration shows K20Z2 engine.
Does the voltage increase more than 0.2 V ( 2.5 mmH g, 0.1 i n.H g)? Ar e t he par t s OK ?
Is the result OK ?
08/08/21 14:32:38 61SNR030_110_0389
ProCarManuals.com
DYNOMITE -2009-

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DTC P0497:
Special Tools Required
YES
NO
YES
NO
YES
NO YES
NO
11-392EVAP System
DTC Troubleshooting (cont’d)
A
C
07JAZ-001000B
B
EVAP System Low Purge Flow
Detected
 Vacuum/pressure gauge, 0 4 in.Hg, 07JAZ-001000B
 Vacuum pump/gauge, 0 30 in.Hg, Snap-on YA4000A
or equivalent, commercially available
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3). 1. Check the fuel fill cap installation (The cap must say TIGHTEN TO CLICK. The cap should tighten 1/4 turn
after it is tight.).
Go to step 2.
Properly install the fuel fill cap, then go to
step 23.
2. Turn the ignition switch to ON (II).
3. Clear the DTC with the HDS.
4. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the FTP sensor, the EVAP canister purge valve,
the EVAP canister vent shut valve, and the ECM/
PCM.
Go to step 5.
5. Check for a loose or damaged EVAP canister purge line between the intake manifold and the EVAP
canister purge valve.
Go to step 6.
Reconnect or repair the EVAP canister purge
line, then go to step 23. 6. Disconnect the vacuum hose (A) from the EVAP
canister purge valve (B) in the engine compartment,
and connect a T-fitting (C) between the vacuum
gauge, the vacuum pump/gauge, 0 30 in.Hg, and
the vacuum hose as shown.
7. Select EVAP PCS ON in the INSPECTION MENU with the HDS.
8. Slowly apply about 2 kPa (15 mmHg, 0.6 in.Hg) of vacuum to the hose.
Replace the EVAP canister purge valve, then
go to step 22.
Go to step 9.
Is the f uel f ill cap installed and properlytightened?
Is the result OK ?Is the line OK ? Does i t hol d v acuum?
08/08/21 14:33:20 61SNR030_110_0392
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DYNOMITE -2009-

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YES
NO YES
NO
YES
NO
11-397
A
07JAZ-001000B A B
15. Connect the vacuum pump/gauge, 0 30 in.Hg, to
the vacuum hose (A) as shown.
16. Start the engine, and let it idle. Go to step 17.
Check for a blockage at the EVAP purge line
between the throttle body and the EVAP canister
purge valve, then go to step 25.
17. Turn the ignition switch to LOCK (0).
18. Remove the FTP sensor with its connector connected (see page 11- 408).
19. Connect a T-fitting (A) between the vacuum pump/ gauge, 0 30 in.Hg and connect the vacuum pump
and the FTP sensor (B) as shown. 20. Turn the ignition switch to ON (II).
21. Check and record the FTP SENSOR reading in the
DATA LIST with the HDS.
22. Slowly apply about 1.3 kPa (10 mmHg, 0.4 in.Hg) of vacuum to the hose.
23. ChecktheFTPSENSORintheDATALISTwiththe HDS.
Check for debris or blockage at the EVAP
canister port, then go to step 25.
Go to step 24.
24. Replace the FTP sensor (see page 11-408).
25. Reconnect all hoses.
26. Turn the ignition switch to ON (II).
27. Reset the ECM with the HDS.
28. Do the ECM idle learn procedure (see page 11-310).
29. Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Troubleshooting is complete.
Check for poor connections or loose terminals
at the FTP sensor and the ECM, then go to step 1.
Is ther e v acuum? Does t he v al ue change?
Is the result OK ?
08/08/21 14:33:23 61SNR030_110_0397
ProCarManuals.com
DYNOMITE -2009-

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DTC P1454:
DTC P2422:
YES
NO
YES
NO YES
NO
11-402EVAP System
DTC Troubleshooting (cont’d)
A
FTP Sensor Range/Performance
Problem
EVAP Canister Vent Shut Valve
Stuck Closed Malfunction
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0).
4. Remove the fuel fill cap, and wait 1 minute.
5. ChecktheFTPSENSORintheDATALISTwiththe 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, and let it idle without load (A/T in P or N, M/T in neutral) until the radiator fan comes
on.
9. Monitor the OBD STATUS for DTC P1454 in the DTCs MENU with the HDS.
Go to step 10.
If the screen indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals at the FTP
sensor, the EVAP canister vent shut valve, and the
ECM/PCM. Also check for a blockage in the vent
hoses and the drain joint. If the screen indicates
NOT COMPLETED, keep idling until a result comes
on. 10. Clear the DTC with the HDS.
11. Turn the ignition switch to LOCK (0).
12. Remove the EVAP canister vent shut valve from the
EVAP canister (see page 11-409).
13. Connect the 2P connector to the EVAP canister vent shut valve.
14. Turn the ignition switch to ON (II).
15. Select 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,
the vent hoses, and the drain joint, then install the
EVAP canister vent shut valve, and go to step 23.
Replace the EVAP canister vent shut valve
(see page 11-409), then go to step 23.
Is i t bet w een 0.67 and 0.67 k Pa ( 5 and 5 mmH g, 0.2 and 0.2 i n.H g), or 2.4 and 2.6 V ?
Does t he scr een i nd i cat e F AILE D? Does t he v al v e oper at e?
08/08/21 14:33:24 61SNR030_110_0402
ProCarManuals.com
DYNOMITE -2009-

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YES
NO YES
NO
YES
NO
11-403
A
B
A
17. Disconnect the air tube (A) from the FTP sensor (B).
18. ChecktheFTPSENSORintheDATALISTwiththeHDS.
Check for a blockage in the FTP sensor air
tube or the vent, then go to step 23.
Go to step 19.
19. Turn the ignition switch to LOCK (0).
20. Remove the FTP sensor (A) from the EVAP canister with its connector connected (see page 11-408). 21. Turn the ignition switch to ON (II).
22. ChecktheFTPSENSORintheDATALISTwiththe
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 11-408),
then go to step 23.
23. Turn the ignition switch to ON (II).
24. Reset the ECM/PCM with the HDS.
25. Do the ECM/PCM idle learn procedure (see page 11-310).
26. Start the engine, and let it idle without load (A/T in P or N, M/T in neutral) until the radiator fan comes
on.
27. Check for Temporary DTCs or DTCs with the HDS.
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.
Go to step 28.
(cont’d)
Is i t bet w een 0.67 and 0.67 k Pa ( 5 and5 mmH g, 0.2 and 0.2 i n.H g), or 2.4 and 2.6 V ? Is i t bet w een 0.67 k Pa and 0.67 k Pa ( 5 and
5 mmH g, 0.2 and 0.2 i n.H g), or 2.4 and 2.6 V ?
Is DT C P1454 and/ or P2422 indicated?
08/08/21 14:33:25 61SNR030_110_0403
ProCarManuals.com
DYNOMITE -2009-

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Special Tools Required
YES
NO
YES
NO YES
NO
K20Z3 engine
11-405
Fuel Cap Warning Message System Troubleshooting
AB
C A
B
C 07JAZ-001000B
 Vacuum/pressure gauge, 0 4 in.Hg 07JAZ-001000B
 Vacuum pump/gauge, 0 30 in.Hg, Snap-on YA4000A
or equivalent, commercially available
Do this procedure if the fuel cap warning message
comes on frequently, or if the message does not go off
after the fuel fill cap is tightened and the vehicle is
driven several days.
1. Check the fuel fill cap (the cap must say TIGHTEN TO CLICK). It should turn 1/4 after it’s tight, then it
clicks.
Go to step 2.
Replace or tighten the cap, then go to step 13.
2. Check the fuel fill cap seal (A) and the fuel fill pipe mating surface (B). Verify that the fuel fill cap tether
cord (C) is not caught under the cap.
Replace the fuel fill cap or the fuel fill pipe,
then go to step 13.
Go to step 3. 3. Reinstall and tighten the fuel fill cap.
4. Clear the DTC with the HDS.
5. Start the engine. Hold the engine speed at
3,000 rpm without load (in neutral) until the
radiator fan comes on, then let it idle for 1 minute.
6. Test drive at 72 km/h (45 mph) for 1 minute or more.
Go to step 7.
Intermittent failure, the system is OK at this
time.
7. Turn the ignition switch to LOCK (0).
8. Disconnect the vacuum hose (A) from the EVAP canister purge valve (B) in the engine compartment,
and connect a T-fitting (C) between the vacuum
gauge and the vacuum pump/gauge 0 30 in.Hg,
and the EVAP canister purge valve as shown.
(cont’d)
Is the correct f uel f ill cap installed and properlytightened?
Is the f uel f ill cap seal missing or damaged, is thef uel f i l l pi pe d amaged , or i s t he t et her cor d caughtund er the cap? Does f uel cap w ar ni ng message come on?
08/08/21 14:33:26 61SNR030_110_0405
ProCarManuals.com
DYNOMITE -2009-

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YES
NO
YES
NO
11-406 EVAP System
Fuel Cap Warning Message System Troubleshooting (cont’d)
9. Turn the ignition switch to ON (II).
10. Apply about 2 kPa (15 mmHg, 0.6 in.Hg) of vacuum to the hose.
11. Select the EVAP PCS ON in the INSPECTION MENU with the HDS.
Check for a blockage at the EVAP canister
purge line between EVAP canister purge valve and
the EVAP canister, then go to step 12.
Replace the EVAP canister purge valve
(see page 11-409), then go to step 12.
12. Reconnect all hoses.
13. Turn the ignition switch to ON (II).
14. Reset the ECM with the HDS.
15. Do the ECM idle learn procedure (see page 11-310).
16. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the
radiator fan comes on, then let it idle for 1 minute.
17. Test drive at 72 km/h (45 mph) for 1 minute or more.
Go to step 1 and recheck.
Troubleshooting is complete.
Does t he v acuum r el ease i mmed i at el y ?
Does t he f uel cap message come on?
08/08/21 14:33:26 61SNR030_110_0406
ProCarManuals.com
DYNOMITE -2009-


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11-40911-409
EVAP Canister Vent Shut Valve
Replacement EVAP Canister Purge Valve
Replacement
A
B
C
AB
C
D
E D
1. Remove the EVAP canister (see page 11-407).
2. Remove the cap (A).
3. Remove the EVAP canister vent shut valve (B).
4. Install the parts in the reverse order of removal
with new O-rings (C) and new cap.
NOTE: Do not coat the O-ring with oil. 1. Remove the engine cover (see step 1 on page 9-3).
2. Remove the air cleaner (see page 11-345).
3. Relieve the fuel pressure (see page 11-322).
4. Remove the fuel line (A).
5. Disconnect the EVAP canister purge valve 2P
connector (B).
6. Remove the bolts (C) and the hoses (D), then remove the EVAP canister purge valve (E).
7. Install the parts in the reverse order of removal.
* : This illustration shows K20Z2 engine.
08/08/21 14:33:28 61SNR030_110_0409
ProCarManuals.com
DYNOMITE -2009-