Acura CSX. Instruction — page 152

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DTC P0341:

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

11-281

CMP Sensor A and CKP Sensor

Incorrect Phase Detected

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. Test-drive at a steady speed between 30

60 km/h

(19

38 mph) for 10 minutes.

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

Go to step 9.

Go to step 5.

5. Do the VTC TEST in the INSPECTION MENU with

the HDS.

Go to step 6.

Go to step 9.

6. Test-drive at a steady speed between 30

60 km/h

(19

38 mph) for 10 minutes.

7. Check the VTC STATUS in the DATA LIST with the

HDS.

Go to step 8.

Go to step 6 and recheck.

8. Monitor the OBD STATUS for DTC P0341 in the

DTCs MENU with the HDS.

Go to step 9.

If the screen indicates PASSED, intermittent

failure, the system is OK at this time. Check for
poor connections or loose terminals at the VTC oil
control solenoid valve and the ECM/PCM. If the
screen indicates NOT COMPLETED, go to step 6
and recheck.

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

10. Test the VTC oil control solenoid valve (see page

11-294).

Go to step 11.

Replace the VTC oil control solenoid valve

(see page 11-294), then go to step 14.

11. Check the camshaft timing (see page 6-21).

Go to step 12.

Reset the camshaft timing (see page 6-21),

then go to step 14.

12. Check for damage or stretch at the cam chain

(see page 6-32).

Replace the cam chain (see page 6-18), then

go to step 14.

Go to step 13.

13. Inspect the VTC actuator (see page 6-11).

Go to step 14.

Replace the VTC actuator (see page 6-42),

then go to step 14.

Is DT C P0341 indicated?

Is the r esult OK ?

Does it indicate ON?

Does the scr een indicate F AILED?

Is the V T C oil contr ol solenoid valve OK ?

Is the camshaf t timing OK ?

Is the cam chain damaged or str etched?

Is the actuator OK ?

08/08/21 14:28:23 61SNR030_110_0281

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YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

DTC P0344:

11-282

11-282

VTEC/VTC

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

15. Reset the ECM/PCM with the HDS.

16. Clear the CKP pattern with the HDS.

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

11-310).

18. Do the CKP pattern learn procedure (see page 11-4).

19. Test-drive at a steady speed between 30

60 km/h

(19

38 mph) for 10 minutes.

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

Check for poor connections or loose

terminals at the VTC oil control solenoid valve and
the ECM/PCM, then go to step 1.

Go to step 21.

21. Monitor the OBD STATUS for DTC P0341 in the

DTCs MENU with the HDS.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs were indicated in step 20,
go to the indicated DTC’s troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the VTC oil
control solenoid valve and the ECM/PCM, then go
to step 1. If the screen indicates NOT COMPLETED,
go to step 19.

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. Start the engine, and let it idle for 10 seconds.

4. Check the CMP A NOISE in the DATA LIST with the

HDS.

Go to step 7.

Go to step 5.

5. Test-drive the vehicle for several minutes in the

range of these recorded freeze data parameters:

• ENGINE SPEED
• VSS

6. Check the CMP A NOISE in the DATA LIST with the

HDS.

Go to step 7.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at CMP sensor A and the ECM/PCM.

7. Check for poor connections or loose terminals at

these locations:

• CMP sensor A
• ECM/PCM
• Engine ground
• Body ground

Go to step 8.

Repair the connectors or the terminals, then

go to step 11.

CMP Sensor A Circuit

Intermittent Interruption

Is DT C P0341 indicated?

Does the scr een indicate PASSED?

Ar e 0 counts indicated?

Ar e 0 counts indicated?

Ar e the connections and the ter minals OK ?

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01

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YES

NO

YES

NO

YES

NO

YES

NO

DTC P1009:

11-283

11-283

A

8. Check for damage on the CMP sensor A pulser

plate (see page 6-41).

Replace the CMP sensor A pulser plate

(see page 6-41), then go to step 11.

Go to step 9.

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

10. Replace CMP sensor A (see page 11-295).

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

12. Reset the ECM/PCM with the HDS.

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

11-310).

14. Start the engine, and let it idle for 10 seconds.

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

Check for poor connections or loose

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

Troubleshooting is complete. If any other

Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

NOTE:

• Before you troubleshoot, record all freeze data and

any on-board snapshot, and review the general
troubleshooting information (see page 11-3).

• If DTC P0341 is stored at the same time as DTC P1009,

troubleshoot DTC P1009 first, then recheck for DTC
P0341.

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

2. Clear the DTC with the HDS.

3. Start the engine.

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

Go to step 5.

Intermittent failure, the system is OK at this

time.

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

6. Remove the cam chain auto-tensioner (see page

6-29).

7. Remove the VTC strainer (A), and check it for

clogging.

Go to step 8.

Clean the VTC strainer, replace the engine oil

filter and the engine oil, then go to step 10.

VTC Advance Malfunction

Is the pulser plate damaged?

Is DT C P0344 indicated?

Is DT C P1009 indicated?

Is the str ainer OK ?

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YES

NO

YES

NO

YES

NO

Special Tools Required

YES

NO

YES

NO

DTC P2646:

11-284

11-284

VTEC/VTC

8. Test the VTC oil control solenoid valve (see page

11-294).

Go to step 9.

Replace the VTC oil control solenoid valve

(see page 11-294), then go to step 10.

9. Inspect the VTC actuator (see page 6-11).

Check the VTC system oil passages, then go

to step 10.

Replace the VTC actuator (see page 6-42),

then go to step 10.

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

11. Reset the ECM/PCM with the HDS.

12. Clear the CKP pattern with the HDS.

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

11-310).

14. Do the CKP pattern learn procedure (see page 11-4).

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

Check the oil passages at the VTC system,

then go to step 1.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs are indicated, go to the
indicated DTC’s troubleshooting.

• Pressure gauge adapter 07NAJ-P07010A
• A/T low pressure gauge w/panel 07406-0070301
• A/T pressure hose 07406-0020201
• A/T pressure hose, 2,210 mm 07MAJ-PY4011A
• A/T pressure adapter 07MAJ-PY40120
• Oil pressure hose 07ZAJ-S5AA200

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 engine oil level.

Go to step 2.

Adjust the engine oil to the proper level, then

go to step 21.

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

3. Clear the DTC with the HDS.

4. Do the VTEC 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 rocker arm oil pressure switch, the rocker
arm oil control solenoid, and the ECM/PCM.

Go to step 5.

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

6. Disconnect the rocker arm oil pressure switch 2P

connector.

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

Rocker Arm Oil Pressure Switch

Circuit Low Voltage

Is the valve OK ?

Is the actuator OK ?

Is DT C P1009 indicated?

Is the engine oil level OK ?

Is the r esult OK ?

08/08/21 14:28:24 61SNR030_110_0284

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