Acura CSX. Instruction — page 184

SNR9AA9K7210009145CFAAT00

YES

NO

DTC P145C:

11-404

11-404

EVAP System

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 flow

EVAP System Purge Flow

Malfunction

Does the scr een indicate PASSED?

08/08/21 14:33:25 61SNR030_110_0404

01

*01

SNR9AEBA20323400000FAAT00

Special Tools Required

YES

NO

YES

NO

YES

NO

K20Z3 engine

11-405

Fuel Cap Warning Message System Troubleshooting

A

B

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.

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

Is the f uel f ill cap seal missing or damaged, is the
f uel f ill pipe damaged, or is the tether cor d caught
under the cap?

Does f uel cap war ning message come on?

08/08/21 14:33:26 61SNR030_110_0405

YES

NO

YES

NO

11-406

EVAP System

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 the vacuum r elease immediately?

Does the f uel cap message come on?

08/08/21 14:33:26 61SNR030_110_0406

01

02

03

SNR9A00A20323425211KBAT01

11-407

EVAP Canister Replacement

A

22 N·m
(2.2 kgf·m, 16 lbf·ft)

A

A

B

C

A

A

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.

08/08/21 14:33:27 61SNR030_110_0407

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