Acura CSX. Manual — part 178

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DTC P0452:

YES

NO

YES

NO

YES

NO

YES

NO

11-380

EVAP System

FTP SENSOR 3P CONNECTOR

VCC6 (BLU)

FTP Sensor 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. Turn the ignition switch to LOCK (0).

4. Remove the fuel fill cap.

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

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

HDS.

Go to step 10.

Go to step 7.

7. Install the fuel fill cap.

8. Start the engine, and let it idle.

9. Monitor the OBD STATUS for DTC P0452 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 and the ECM/PCM. If the screen indicates
NOT COMPLETED, go to step 4 and recheck.

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

11. Disconnect the FTP sensor 3P connector.

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

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

HDS.

Go to step 14.

Go to step 24.

14. Measure the voltage between FTP sensor 3P

connector terminal No. 1 and body ground.

Go to step 20.

Go to step 15.

Wire side of female terminals

Is about

7 .3 kPa (

55 mmHg,

2.16 in.Hg), or

0.3 V or less indicated?

Does the scr een indicate F AILED?

Is about

7 .3 kPa (

55 mmHg,

2.16 in.Hg), or

0.3 V or less indicated?

Is ther e about 5 V ?

08/08/21 14:32:34 61SNR030_110_0380

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YES

NO

YES

NO

11-381

FTP SENSOR 3P CONNECTOR

VCC6 (BLU)

JUMPER WIRE

ECM/PCM CONNECTOR A (44P)

VCC6
(RED)

FTP SENSOR 3P CONNECTOR

FTP (LT GRN)

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

16. Jump the SCS line with the HDS.

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

18. Connect FTP sensor 3P connector terminal No. 1 to

body ground with a jumper wire.

19. Check for continuity between ECM/PCM connector

terminal A19 and body ground.

Go to step 32.

Repair open in the wire between the ECM/

PCM (A19) and the FTP sensor, then go to step 26.

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

21. Jump the SCS line with the HDS.

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

23. Check for continuity between FTP sensor 3P

connector terminal No. 2 and body ground.

Repair short in the wire between the ECM/

PCM (A26) and the FTP sensor, then go to step 26.

Go to step 32.

Wire side of female terminals

Terminal side of female terminals

Wire side of female terminals

Is ther e continuity?

Is ther e continuity?

08/08/21 14:32:34 61SNR030_110_0381

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YES

NO

YES

NO

YES

NO

YES

NO

11-382

EVAP System

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

25. Replace the FTP sensor (see page 11-408).

26. Reconnect all connectors.

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

28. Reset the ECM/PCM with the HDS.

29. Do the ECM/PCM idle learn procedure (see page

11-310).

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

Check for poor connections or loose

terminals at the FTP sensor and the ECM/PCM, then
go to step 1.

Go to step 31.

31. Monitor the OBD STATUS for DTC P0452 in the

DTCs MENU with the HDS.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs were indicated in step 30,
go to the indicated DTC’s troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the FTP sensor
and the ECM/PCM, then go to step 1. If the screen
indicates NOT COMPLETED, keep idling until a
result comes on.

32. Reconnect all connectors.

33. Update the ECM/PCM if it does not have the latest

software (see page 11-227), or substitute a known-
good ECM/PCM (see page 11-7).

34. Start the engine, and let it idle.

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

Check for poor connections or loose

terminals at the FTP sensor and the ECM/PCM. If
the ECM/PCM was updated, substitute a known-
good ECM/PCM (see page 11-7), then go to step 34.
If the ECM/PCM was substituted, go to step 1.

Go to step 36.

36. Monitor the OBD STATUS for DTC P0452 in the

DTCs MENU with the HDS.

If the ECM/PCM was updated,

troubleshooting is complete. If the ECM/PCM was
substituted, replace the original ECM/PCM
(see page 11-228). If any other Temporary DTCs or
DTCs were indicated in step 35, go to the indicated
DTC’s troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the FTP sensor
and the ECM/PCM. If the ECM/PCM was updated,
substitute a known-good ECM/PCM (see page 11-7),
then go to step 34. If the ECM/PCM was substituted,
go to step 1. If the screen indicates NOT
COMPLETED, keep idling until a result comes on.

Is DT C P0452 indicated?

Does the scr een indicate PASSED?

Is DT C P0452 indicated?

Does the scr een indicate PASSED?

08/08/21 14:32:35 61SNR030_110_0382

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DTC P0453:

YES

NO

YES

NO

YES

NO

YES

NO

11-383

FTP SENSOR 3P CONNECTOR

SG6
(BLK)

FTP
(LT GRN)

JUMPER WIRE

FTP SENSOR 3P CONNECTOR

SG6
(BLK)

VCC6
(BLU)

FTP Sensor Circuit High 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. Turn the ignition switch to LOCK (0).

4. Remove the fuel fill cap.

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

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

HDS.

Go to step 10.

Go to step 7.

7. Install the fuel fill cap.

8. Start the engine, and let it idle.

9. Monitor the OBD STATUS for DTC P0453 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 and the ECM/PCM. If the screen indicates
NOT COMPLETED, go to step 4 and recheck.

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

11. Disconnect the FTP sensor 3P connector.

12. Connect FTP sensor 3P connector terminals No. 2

and No. 3 with a jumper wire.

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

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

HDS.

Go to step 15.

Go to step 26.

15. Measure the voltage between FTP sensor 3P

connector terminals No. 1 and No. 3.

Go to step 21.

Go to step 16.

Wire side of female terminals

Wire side of female terminals

Is about 7 .3 kPa ( 55 mmHg, 2.16 in.Hg), or 4.7 V
or mor e indicated?

Does the scr een indicate F AILED?

Is about 7 .3 kPa ( 55 mmHg, 2.16 in.Hg), or 4.7 V
or mor e indicated?

Is ther e about 5 V ?

08/08/21 14:32:35 61SNR030_110_0383