Content .. 185 186 187 188 ..

Honda Ridgeline. Manual - part 187

−

YES

14-133

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

software (see page 14-8), or substitute a known-
good PCM (see page 14-9).

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

operating temperature (the radiator fan comes on).

25. Drive the vehicle in 3rd gear in D in the D3 driving

mode for at least 2 seconds, then release the D3
driving mode by pressing the D3 switch, and drive
in 4th gear for at least 2 seconds. Slow down and
stop the wheels.

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

Check for poor connections or loose

terminals at the 3rd clutch transmission fluid
pressure switch and the PCM. If the PCM was
updated, substitute a known-good PCM (see page
14-9), then go to step 24. If the PCM was substituted,
go to step 1.

If Temporary DTC or DTC P0848 is not

indicated, or if any other Temporary DTCs or DTCs
are indicated, go to step 27.

27. Monitor the OBD STATUS for P0848 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 11-205). If any other
Temporary DTCs or DTCs were indicated on step
26, go to the indicated DTCs troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the 3rd clutch
transmission fluid pressure switch and the PCM. If
the PCM was updated, substitute a known-good
PCM (see page 14-9), then go to step 24. If the PCM
was substituted, go to step 1. If the screen indicates
NOT COMPLETED, go to step 24.

Is DT C P0848 indicated?

Does the scr een indicate PASSED?

０１

ＳＪＣ８Ａ００Ｋ７７１０００９０８７２ＦＡＡＴ００

−

DTC P0872:

YES

14-134

Automatic Transmission

DTC Troubleshooting (cont’d)

PCM CONNECTOR C (44P)

OP4SW (BLU/YEL)

Short in 4th Clutch Transmission

Fluid Pressure Switch Circuit, or 4th Clutch
Transmission Fluid Pressure Switch Stuck
ON

NOTE:

• Before you troubleshoot, record all freeze data and

any on-board snapshot, and review General
Troubleshooting Information (see page 14-4).

• This code is caused by an electrical circuit problem

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

1. Clear the DTC with the HDS.

2. Check the 4TH PRESSURE SWITCH SIGNAL with

the HDS in the A/T data list when not in 4th gear.

Go to step 3.

Go to step 6.

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

operating temperature (the radiator fan comes on).

4. Drive the vehicle in 4th gear in D for at least

2 seconds, and drive in 5th gear for at least
2 seconds. Slow down and stop the wheels.

5. Monitor the OBD STATUS for P0872 in the DTCs

MENU with the HDS.

Intermittent failure, the system is OK at this

time. Check the OP4SW (BLU/YEL) wire for an
intermittent short to ground between the 4th clutch
transmission fluid pressure switch and the PCM.

If the screen indicates FAILED, go to step 6. If

the screen indicates NOT COMPLETED, return to
step 3 and recheck.

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

7. Disconnect the 4th clutch transmission fluid

pressure switch connector.

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

9. Check the 4TH PRESSURE SWITCH SIGNAL in the

DATA LIST with the HDS.

Go to step 14.

Go to step 10.

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

11. Jump the SCS line with the HDS.

12. Disconnect PCM connector C (44P).

13. Check for continuity between PCM connector

terminal C16 and body ground.

Repair a short to ground in the wire between

PCM connector terminal C16 and the 4th clutch
transmission fluid pressure switch, then go to step
15.

Go to step 22.

Terminal side of female terminals

Is the 4T H PRESSURE SW IT CH OF F ?

Does the scr een indicate PASSED?

Is the 4T H PRESSURE SW IT CH OF F ?

Is ther e continuity?

−

YES

14-135

14. Replace the 4th clutch transmission fluid pressure

switch (see page 14-207).

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. Drive the vehicle in 4th gear in D for at least

2 seconds, and drive in 5th gear for at least
2 seconds. Slow down and stop the wheels.

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

Check for poor connections or loose

terminals at the 4th clutch transmission fluid
pressure switch and the PCM, then go to step 1.

If Temporary DTC or DTC P0872 is not

indicated, or if any other Temporary DTCs are
indicated, go to step 21.

21. Monitor the OBD STATUS for P0872 in the DTCs

MENU with the HDS.

Troubleshooting is complete. If any other

Temporary DTC or DTCs were indicated on step 20,
go to the indicated DTCs troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the 4th clutch
transmission fluid pressure switch and the PCM,
then go to step 1. If the screen indicates NOT
COMPLETED, go to step 18.

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

software (see page 14-8), or substitute a known-
good PCM (see page 14-9).

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

operating temperature (the radiator fan comes on).

24. Driver the vehicle in 4th gear in D for at least

2 seconds, and drive in 5th gear for at least
2 seconds. Slow down and stop the wheels.

25. Check for Temporary DTC or DTCs with the HDS.

Check for poor connections or loose

terminals at the 4th clutch transmission fluid
pressure switch and the PCM. If the PCM was
updated, substitute a known-good PCM (see page
14-9), then go to step 23. If the PCM was substituted,
go to step 1.

If Temporary DTC or DTC P0872 is not

indicated, or if any other Temporary DTC or DTCs
are indicated, go to step 26.

26. Monitor the OBD STATUS for P0872 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 11-205). If any other
Temporary DTC or DTCs were indicated on step 25,
go to the indicated DTCs troubleshooting.

If the screen indicates FAILED, check for poor

connections or loose terminals at the 4th clutch
transmission fluid pressure switch and the PCM. If
the PCM was updated, substitute a known-good
PCM (see page 14-9), then go to step 23. If the PCM
was substituted, go to step 1. If the screen indicates
NOT COMPLETED, go to step 23.

Is DT C P087 2 indicated?

Does the scr een indicate PASSED?

Is DT C P087 2 indicated?

Does the scr een indicate PASSED?

０１

ＳＪＣ８Ａ００Ｋ７７１０００９０８７３ＦＡＡＴ００

−

DTC P0873:

YES

14-136

Automatic Transmission

DTC Troubleshooting (cont’d)

4TH CLUTCH TRANSMISSION FLUID
PRESSURE SWITCH CONNECTOR

OP4SW (BLU/YEL)

Open in 4th Clutch Transmission

Fluid Pressure Switch Circuit, or 4th Clutch
Transmission Fluid Pressure Switch Stuck
OFF

NOTE:

• Before you troubleshoot, record all freeze data and

any on-board snapshot, and review General
Troubleshooting Information (see page 14-4).

• This code is caused by an electrical circuit problem

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

1. Clear the DTC with the HDS.

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

operating temperature (the radiator fan comes on).

3. Drive the vehicle in 4th gear in D for at least

2 seconds, then drive in 5th gear for at least
2 seconds.

4. Check the 4TH PRESSURE SWITCH SIGNAL in the

DATA LIST with the HDS.

Go to step 5.

Go to step 7.

5. Drive the vehicle in 4th gear in D for at least

2 seconds, then drive in 5th gear for at least
2 seconds.

6. Monitor the OBD STATUS for P0873 in the DTCs

MENU with the HDS.

Intermittent failure, the system is OK at this

time. Check for poor connections or loose terminals
at the 4th clutch transmission fluid pressure switch
and the PCM.

If the screen indicates NOT COMPLETED,

return to step 5 and recheck.

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

8. Disconnect the 4th clutch transmission fluid

pressure switch connector.

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

10. Measure the voltage between the 4th clutch

transmission fluid pressure switch connector
terminal and body ground.

Go to step 15.

Go to step 11.

Wire side of female terminals

Is the 4T H PRESSURE SW IT CH ON?

Does the scr een indicate PASSED?

Is ther e about 5 V ?

Content .. 185 186 187 188 ..