ACURA CSX 2006 Service Repair Manual

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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?
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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?
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YES
NO
DTC P145C:
11-40411-404 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 any other
Temporary DTCs or DTCs were indicated in step 27,
go to the indicated DTC’s troubleshooting.
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. NOTE:
 Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
 This DTC is representative of an EVAP system purge flow problem. If DTC P145C is indicated alone,
troubleshoot P0496 and P0497 using the freeze data
for P145C.
 If DTC P0497 and P145C are stored at the same time, check for a poor connection, a blockage, or damage
at the EVAP canister purge line between the EVAP
canister purge valve and the EVAP canister, or check
for a stuck closed EVAP canister purge valve.
 If any of the DTCs listed below are indicated at the same time as DTC P145C, troubleshoot those DTC
first, then recheck for P145C:
P0496, P0497: EVAP system purge flowEVAP System Purge Flow
Malfunction
Does t he scr een i nd i cat e PASSE D?
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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?
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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?
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11-407
EVAP Canister Replacement
A
22 N·m
(2.2 kgf·m, 16 lbf·ft) A A
B
C
AA
D
9.8 N·m
(1.0 kgf·m,
7.2 lbf·ft)
1. Raise the vehicle on a lift.
2. Remove the cover (A).
3. Remove the EVAP canister guard pipe (A). 4. Remove the hoses (A), the FTP sensor connector
(B), the EVAP canister vent shut valve connector (C)
and the bolts (D).
5. Remove the EVAP canister.
(cont’d)
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11-40811-408 EVAP System
EVAP Canister Replacement
(cont’d)
FTP Sensor Replacement
A
B
CAB C
D E
6. Remove the cap (A).
7. Remove the EVAP canister vent shut valve (B).
8. Install the EVAP canister vent shut valve to the new
EVAP canister with new O-rings (C).
NOTE: Do not coat the O-ring with oil.
9. Install the parts in the reverse order of removal. 1. Remove the cover (see step 2 on page 11-407).
2. Disconnect the FTP sensor connector (A).
3. Disconnect the hose (B), and then remove the FTP
sensor (C).
4. Install the parts in the reverse order of removal with a new O-ring (D) and retainer (E).
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11-40811-408 EVAP System
EVAP Canister Replacement
(cont’d)
FTP Sensor Replacement
A
B
CAB C
D E
6. Remove the cap (A).
7. Remove the EVAP canister vent shut valve (B).
8. Install the EVAP canister vent shut valve to the new
EVAP canister with new O-rings (C).
NOTE: Do not coat the O-ring with oil.
9. Install the parts in the reverse order of removal. 1. Remove the cover (see step 2 on page 11-407).
2. Disconnect the FTP sensor connector (A).
3. Disconnect the hose (B), and then remove the FTP
sensor (C).
4. Install the parts in the reverse order of removal with a new O-ring (D) and retainer (E).
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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.
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