Acura CSX. Instruction — page 182

02

01

YES

NO

YES

NO

11-396

EVAP System

A

07JAZ-001000B

A

B

C

07JAZ-001000B

7. Disconnect the vacuum hose from the purge line (at

the EVAP canister side), and connect a T-fitting (A)
between the vacuum gauge and the vacuum pump/
gauge, 0

30 in.Hg, as shown.

8. Apply about 2 kPa (15 mmHg, 0.6 in.Hg) of vacuum

to the hose.

9. Select EVAP PCS ON in the INSPECTION MENU

with the HDS.

Go to step 15.

Go to step 10.

10. Select EVAP PCS OFF in the INSPECTION MENU

with the HDS.

11. Disconnect the vacuum hose (A) from the EVAP

canister purge valve (B). 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.

12. Apply about 2 kPa (15 mmHg, 0.6 in.Hg) of vacuum

to the hose.

13. Turn the ignition switch to ON (II).

14. Select EVAP PCS ON in the INSPECTION MENU

with the HDS.

Check for a blockage in the vacuum hose

between the EVAP canister purge valve and the
EVAP canister, then go to step 25.

Replace the EVAP canister purge valve

(see page 11-409), then go to step 25.

Does the vacuum r elease immediately?

Does the vacuum r elease immediately?

08/08/21 14:33:22 61SNR030_110_0396

04

05

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. Check the FTP SENSOR in the DATA LIST with the

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 vacuum?

Does the value change?

Is the r esult OK ?

08/08/21 14:33:23 61SNR030_110_0397

01

02

SNR9AA7K72100090498FAAT30

DTC P0498:

YES

NO

YES

NO

YES

NO

YES

NO

11-398

EVAP System

B (PUR)

EVAP CANISTER VENT SHUT VALVE
2P CONNECTOR

EVAP CANISTER VENT SHUT VALVE
2P CONNECTOR

EVAP Canister Vent Shut Valve

Circuit Low Voltage

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. Check for Temporary DTCs or DTCs with the HDS.

Go to step 6.

Go to step 4.

4. Select EVAP CVS ON in the INSPECTION MENU

with the HDS.

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

Go to step 6.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at the EVAP canister vent shut valve and the ECM/
PCM.

6. Turn the ignition switch to LOCK (0).

7. Disconnect the EVAP canister vent shut valve 2P

connector.

8. Turn the ignition switch to ON (II).

9. Measure the voltage between EVAP canister vent

shut valve 2P connector terminal No. 2 and body
ground.

Go to step 10.

Repair open in the wire between the EVAP

canister vent shut valve and the PGM-FI subrelay,
then go to step 18.

10. Turn the ignition switch to LOCK (0).

11. At the valve side, measure the resistance between

EVAP canister vent shut valve 2P connector
terminals No. 1 and No. 2.

Go to step 12.

Go to step 17.

Wire side of female terminals

Terminal side of male terminals

Is DT C P0498 indicated?

Is DT C P0498 indicated?

Is ther e batter y voltage?

Is ther e about 25

30

at r oom temper atur e?

08/08/21 14:33:23 61SNR030_110_0398

03

04

05

YES

NO

YES

NO

11-399

VSV
(LT GRN)

ECM/PCM CONNECTOR A (44P)

VSV (LT GRN)

EVAP CANISTER VENT SHUT VALVE
2P CONNECTOR

JUMPER WIRE

VSV
(LT GRN)

ECM/PCM CONNECTOR A (44P)

12. Jump the SCS line with the HDS.

13. Disconnect ECM/PCM connector A (44P).

14. Check for continuity between ECM/PCM connector

terminal A10 and body ground.

Repair short in the wire between the EVAP

canister vent shut valve and the ECM/PCM (A10),
then go to step 18.

Go to step 15.

15. Connect EVAP canister vent shut valve 2P

connector terminal No. 1 to body ground with a
jumper wire.

16. Check for continuity between ECM/PCM connector

terminal A10 and body ground.

Go to step 25.

Repair open in the wire between the EVAP

canister vent shut valve and the ECM/PCM (A10),
then go to step 18.

17. Replace the EVAP canister vent shut valve

(see page 11-409).

18. Reconnect all connectors.

Terminal side of female terminals

Wire side of female terminals

Terminal side of female terminals

Is ther e continuity?

Is ther e continuity?

08/08/21 14:33:24 61SNR030_110_0399

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