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Acura CSX. Manual - part 266

０１

ＳＮＲ９ＡＡ１Ｋ７７１０００９０８４７ＦＡＡＴ００

−

DTC P0847:

YES

14-145

PCM CONNECTOR B (44P)

OP3SW (BLU/WHT)

Short in 3rd Clutch Transmission

Fluid Pressure Switch Circuit, or 3rd Clutch
Transmission Fluid Pressure Switch Stuck
ON

NOTE:

• Before you troubleshoot, record all freeze data and

any on-board snapshot with the HDS, and review
General Troubleshooting Information (see page 14-3).

• This code is caused by an electrical circuit problem

and cannot be caused by a mechanical problem in the
transmission.

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

2. Clear the DTC with the HDS.

3. Check the 3rd Pressure Switch in the Data List with

the HDS when the transmission is not in 3rd gear.

Go to step 4.

Go to step 7.

4. Start the engine, and warm it up to normal

operating temperature (the radiator fan comes on).

5. Test-drive the vehicle in 4th gear with the shift lever

in D for at least 2 seconds.

6. Monitor the OBD STATUS for P0847 in the DTCs

MENU with the HDS.

Go to step 7.

If the HDS indicates PASSED, intermittent

failure, the system is OK at this time. Check for
intermittent short to body ground in the wire
between the 3rd clutch transmission fluid pressure
switch and the PCM. If the HDS indicates NOT
COMPLETED, go to step 4.

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

8. Disconnect the 3rd clutch transmission fluid

pressure switch connector.

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

10. Check the 3rd Pressure Switch in the Data List with

the HDS.

Replace the 3rd clutch transmission fluid

pressure switch (see page 14-228), then go to step
15.

Go to step 11.

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

12. Jump the SCS line with the HDS.

13. Disconnect PCM connector B (44P).

14. Check for continuity between PCM connector

terminal B9 and body ground.

Repair short to body ground in the wire

between PCM connector terminal B9 and the 3rd
clutch transmission fluid pressure switch, then go
to step 15.

Go to step 22.

Terminal side of female terminals

Is the 3r d Pr essur e Switch OF F ?

Does the HDS indicate F AILED?

Is the 3r d Pr essur e Switch OF F ?

Is ther e continuity?

08/08/21 14:42:35 61SNR030_140_0147

−

YES

14-146

Automatic Transmission

15. Reconnect all connectors.

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

17. Clear the DTC with the HDS.

18. Start the engine, and warm it up to normal

operating temperature (the radiator fan comes on).

19. Test-drive the vehicle in 3rd gear with the shift

lever in D for at least 2 seconds, then drive in 4th
gear for at least 2 seconds.

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

Check for intermittent short to body ground

in the wire between the 3rd clutch transmission
fluid pressure switch and the PCM, then go to step
1.

Go to step 21.

21. Monitor the OBD STATUS for P0847 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 HDS indicates FAILED, check for

intermittent short to body ground in the wire
between the 3rd clutch transmission fluid pressure
switch and the PCM, then go to step 1. If the HDS
indicates NOT COMPLETED, go to step 18.

22. Reconnect all connectors.

23. Update the PCM if it does not have the latest

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

24. Start the engine, and warm it up to normal

operating temperature (the radiator fan comes on).

25. Test-drive the vehicle in 3rd gear with the shift

lever in D for at least 2 seconds, then drive in 4th
gear for at least 2 seconds.

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

Check for intermittent short to body ground

in the wire between the 3rd clutch transmission
fluid pressure switch and the PCM. If the PCM was
updated, substitute a known-good PCM (see page
11-7), then go to step 24. If the PCM was substituted,
go to step 1.

Go to step 27.

27. Monitor the OBD STATUS for P0847 in the DTCs

MENU with the HDS.

If the PCM was updated, troubleshooting is

complete. If the PCM was substituted, replace the
original PCM (see page 11-228). If any other
Temporary DTCs or DTCs were indicated in step 26,
go to the indicated DTC’s troubleshooting.

If the HDS indicates FAILED, check for

intermittent short to body ground in the wire
between the 3rd clutch transmission fluid pressure
switch and the PCM. If the PCM was updated,
substitute a known-good PCM (see page 11-7), then
go to step 24. If the PCM was substituted, go to step
1. If the HDS indicates NOT COMPLETED, go to step
24.

Is DT C P0847 indicated?

Does the HDS indicate PASSED?

Is DT C P0847 indicated?

Does the HDS indicate PASSED?

08/08/21 14:42:35 61SNR030_140_0148

０１

ＳＮＲ９ＡＡ１Ｋ７７１０００９０８４８ＦＡＡＴ００

−

DTC P0848:

YES

14-147

3RD CLUTCH TRANSMISSION FLUID
PRESSURE SWITCH CONNECTOR

OP3SW (BLU/WHT)

Open in 3rd Clutch Transmission

Fluid Pressure Switch Circuit, or 3rd Clutch
Transmission Fluid Pressure Switch Stuck
OFF

NOTE:

• Before you troubleshoot, record all freeze data and

any on-board snapshot with the HDS, and review
General Troubleshooting Information (see page 14-3).

• This code is caused by an electrical circuit problem

and cannot be caused by a mechanical problem in the
transmission.

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

2. Clear the DTC with the HDS.

3. Start the engine, and warm it up to normal

operating temperature (the radiator fan comes on).

4. Test-drive the vehicle in 3rd gear in S, and check if

the Shift Control indicates 3rd in the Data List with
the HDS.

5. Check the 3rd Pressure Switch in the Data List with

the HDS.

Go to step 6.

Go to step 8.

6. Test-drive the vehicle in 3rd gear with the shift

lever in D for at least 2 seconds.

7. Monitor the OBD STATUS for P0848 in the DTCs

MENU with the HDS.

Go to step 8.

If the HDS indicates PASSED, intermittent

failure, the system is OK at this time. Check for
poor connections or loose terminals between the
3rd clutch transmission fluid pressure switch and
the PCM. If the HDS indicates NOT COMPLETED, go
to step 6.

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

9. Disconnect the 3rd clutch transmission fluid

pressure switch connector.

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

11. Measure the voltage between the 3rd clutch

transmission fluid pressure switch connector
terminal and body ground.

Replace the 3rd clutch transmission fluid

pressure switch (see page 14-228), then go to step
16.

Go to step 12.

Wire side of female terminals

Is the 3r d Pr essur e Switch ON?

Does the HDS indicate F AILED?

Is ther e about 5 V ?

08/08/21 14:42:35 61SNR030_140_0149

０２

−

YES

14-148

Automatic Transmission

PCM CONNECTOR B (44P)

OP3SW (BLU/WHT)

3RD CLUTCH
TRANSMISSION FLUID
PRESSURE SWITCH
CONNECTOR

OP3SW
(BLU/WHT)

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

13. Jump the SCS line with the HDS.

14. Disconnect PCM connector B (44P).

15. Check for continuity between PCM connector

terminal B9 and the 3rd clutch transmission fluid
pressure switch connector terminal.

Go to step 23.

Repair open in the wire between PCM

connector terminal B9 and the 3rd clutch
transmission fluid pressure switch, then go to step
16.

16. Reconnect all connectors.

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

18. Clear the DTC with the HDS.

19. Start the engine, and warm it up to normal

operating temperature (the radiator fan comes on).

20. Test-drive the vehicle in 3rd gear with the shift

lever in D for at least 2 seconds, then drive in 4th
gear for at least 2 seconds.

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

Check for poor connections or loose

terminals between the 3rd clutch transmission fluid
pressure switch and the PCM, then go to step 1.

Go to step 22.

22. Monitor the OBD STATUS for P0848 in the DTCs

MENU with the HDS.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs were indicated in step 21,
go to the indicated DTC’s troubleshooting.

If the HDS indicates FAILED, check for poor

connections or loose terminals between the 3rd
clutch transmission fluid pressure switch and the
PCM, then go to step 1. If the HDS indicates NOT
COMPLETED, go to step 19.

Wire side of
female terminals

Terminal side of
female terminals

Is ther e continuity?

Is DT C P0848 indicated?

Does the HDS indicate PASSED?

08/08/21 14:42:36 61SNR030_140_0150

Content .. 264 265 266 267 ..