Acura CSX. Manual — part 259

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＊０１

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YES

NO

YES

NO

14-117

OUTPUT SHAFT (COUNTERSHAFT)
SPEED SENSOR CONNECTOR

VCC1 (YEL/RED)

OUTPUT SHAFT (COUNTERSHAFT)
SPEED SENSOR CONNECTOR

NC (BLK/WHT)

10. Connect PCM connector C (44P).

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

12. Measure the voltage between output shaft

(countershaft) speed sensor connector terminal
No. 1 and body ground.

Go to step 13.

Go to step 19.

13. Measure the voltage between output shaft

(countershaft) speed sensor connector terminal
No. 2 and body ground.

Replace the output shaft (countershaft)

speed sensor (see page 14-227), then go to step 23.

Go to step 14.

Wire side of female terminals

Wire side of female terminals

Is ther e about 5 V ?

Is ther e about 5 V ?

08/08/21 14:41:09 61SNR030_140_0119

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０５

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YES

NO

YES

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14-118

Automatic Transmission

OUTPUT SHAFT (COUNTERSHAFT)
SPEED SENSOR CONNECTOR

NC (BLK/WHT)

OUTPUT SHAFT
(COUNTERSHAFT)
SPEED SENSOR
CONNECTOR

NC
(BLK/WHT)

PCM CONNECTOR C (44P)

NC (BLK/WHT)

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

15. Jump the SCS line with the HDS.

16. Disconnect PCM connector C (44P).

17. Check for continuity between output shaft

(countershaft) speed sensor connector terminal
No. 2 and body ground.

Repair short to body ground in the wire

between PCM connector terminal C43 and the
output shaft (countershaft) speed sensor, then go
to step 23.

Go to step 18.

18. Check for continuity between PCM connector

terminal C43 and output shaft (countershaft) speed
sensor connector terminal No. 2.

Go to step 29.

Repair open in the wire between PCM

connector terminal C43 and the output shaft
(countershaft) speed sensor, then go to step 23.

Wire 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 14:41:10 61SNR030_140_0120

０６

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YES

NO

YES

NO

YES

NO

14-119

OUTPUT SHAFT
(COUNTERSHAFT)
SPEED SENSOR
CONNECTOR

VCC1 (YEL/RED)

PCM CONNECTOR C (44P)

VCC1
(YEL/RED)

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

20. Jump the SCS line with the HDS.

21. Disconnect PCM connector C (44P).

22. Check for continuity between PCM connector

terminal C13 and output shaft (countershaft) speed
sensor connector terminal No. 1.

Go to step 29.

Repair open in the wire between PCM

connector terminal C13 and the output shaft
(countershaft) speed sensor, then go to step 23.

23. Reconnect all connectors.

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

25. Clear the DTC with the HDS.

26. Test-drive the vehicle with the shift lever in D at

speeds over 20 km/h (12 mph), and let the
transmission shift through all five gears.

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

Check for poor connections or loose

terminals between the output shaft (countershaft)
speed sensor and the PCM, then go to step 1.

Go to step 28.

28. Monitor the OBD STATUS for P0723 in the DTCs

MENU with the HDS.

Troubleshooting is complete. If any other

Temporary DTCs or DTCs were indicated in step 27,
go to the indicated DTC’s troubleshooting.

If the HDS indicates FAILED, check for poor

connections or loose terminals between the output
shaft (countershaft) speed sensor and the PCM,
then go to step 1. If the HDS indicates NOT
COMPLETED, go to step 26.

Wire side of
female terminals

Terminal side of
female terminals

Is ther e continuity?

Is DT C P07 23 indicated?

Does the HDS indicate PASSED?

08/08/21 14:42:30 61SNR030_140_0121

ＳＮＲ９ＡＡ１Ｋ７７１０００９０７３１ＦＡＡＴ００

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YES

NO

YES

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YES

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YES

NO

YES

NO

DTC P0731:

14-120

14-120

Automatic Transmission

29. Reconnect all connectors.

30. 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).

31. Test-drive the vehicle with the shift lever in D at

speeds over 20 km/h (12 mph), and let the
transmission shift through all five gears.

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

Check for poor connections or loose

terminals between the output shaft (countershaft)
speed sensor and the PCM. If the PCM was updated,
substitute a known-good PCM (see page 11-7), then
go to step 31. If the PCM was substituted, go to step
1.

Go to step 33.

33. Monitor the OBD STATUS for P0723 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 32,
go to the indicated DTC’s troubleshooting.

If the HDS indicates FAILED, check for poor

connections or loose terminals between the output
shaft (countershaft) speed sensor and the PCM. If
the PCM was updated, substitute a known-good
PCM (see page 11-7), then go to step 31. If the PCM
was substituted, go to step 1. If the HDS indicates
NOT COMPLETED, go to step 31.

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).

1. Warm up the engine to normal operating

temperature (the radiator fan comes on).

2. Make sure that the transmission is filled to the

proper level, and check for fluid leaks.

3. Drain the ATF (see step 3 on page 14-232) through a

strainer. Inspect the strainer for metal debris or
excessive clutch material.

Replace the transmission, then go to step 12.

Replace the ATF (see page 14-232), then go to

step 4.

4. Test stall speed in D (see page 14-210).

Go to step 5.

Shift valves A and D are stuck. Repair these

valves and the hydraulic circuit, or replace the
transmission, then go to step 12.

5. Measure the line pressure (see page 14-211).

Go to step 6.

Repair the ATF pump and the regulator valve,

or replace the transmission, then go to step 12.

Problem in 1st Clutch and 1st

Clutch Hydraulic Circuit (1st Gear Incorrect
Ratio)

Is DT C P07 23 indicated?

Does the HDS indicate PASSED?

Does the str ainer have metal debr is or excessive
clutch mater ial?

Is the stall speed within the ser vice limits?

Is the line pr essur e within ser vice limit?

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