Honda Civic. Manual — part 238

REMOVAL/INSTALLATION ).

21. Connect the A/T oil pressure gauge to the 3rd clutch pressure inspection port

(D) and the 4th clutch pressure inspection port (E).

Fig. 174: Identifying 3rd Clutch Pressure Inspection Port And 4th Clutch
Pressure Inspection Port
Courtesy of AMERICAN HONDA MOTOR CO., INC.

22. Connect the A/T oil pressure gauge to the 5th clutch pressure inspection port

(F).

Fig. 175: Identifying 5th Clutch Pressure Inspection Port
Courtesy of AMERICAN HONDA MOTOR CO., INC.

23. Select Pressure Test Assistance Mode in the Miscellaneous Test Menu of the

A/T Mode Menu.

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)

24. Start the engine, and shift to D3.
25. Measure the 3rd clutch pressure at the 3rd clutch pressure inspection port (D)

while holding the engine speed at 2,000 rpm.

26. Shift to D, and measure the 4th clutch pressure at the 4th clutch pressure

inspection port (E) and the 5th clutch pressure at the 5th clutch pressure
inspection port (F) while holding the engine speed at 2,000 rpm.

FLUID PRESSURE REFERENCE

27. Bring the engine back to an idle, then apply the brake to stop the wheels from

rotating.

28. Shift to R, then release the brake pedal. Raise the engine speed to 2,000 rpm,

and measure the 5th clutch pressure at the 5th clutch pressure inspection port
(F).

FLUID PRESSURE REFERENCE

29. Turn the engine off, then disconnect the A/T oil pressure gauges from the 3rd,

4th, and 5th clutch pressure inspection ports.

30. Install the sealing bolts in the 3rd, 4th, and 5th clutch pressure inspection ports

with new sealing washers, and tighten the bolts to 18 N.m (1.8 kgf.m, 13
lbf.ft). Do not reuse the old sealing washer.

Pressure

Fluid Pressure

Standard

Service Limit

3rd clutch (D)
4th clutch (E)
5th clutch (F)

890-970 kPa
(9.1-9.9

kgf/cm

2

, 130-

140 psi)

840 kPa (8.6

kgf/cm

2

, 120

psi)

Pressure

Fluid Pressure

Standard

Service Limit

5th clutch (F)
in R

890-970 kPa
(9.1-9.9

kgf/cm

2

, 130-

140 psi)

840 kPa (8.6

kgf/cm

2

, 120

psi)

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)

31. If the pressures are out of the service limit, problems and probable causes are

listed in the table.

PROBLEMS AND PROBABLE CAUSES

32. Install the splash shield.

SHIFT SOLENOID VALVE TEST

1. Connect the HDS to the DLC (A) located behind the driver's dashboard lower

cover.

Problem

Probable causes

No or low line
pressure

Torque converter

ATF pump

Regulator valve

Torque converter
check valve

Clogged ATF
strainer

No or low 1st clutch
pressure

1st clutch

O-rings

No or low 2nd clutch
pressure

2nd clutch

O-rings

No or low 3rd clutch
pressure

3rd clutch

O-rings

No or low 4th clutch
pressure

4th clutch

O-rings

No or low 5th clutch
pressure

5th clutch

O-rings

No or low 5th clutch
pressure in the R
position

Servo valve

4th clutch

O-rings

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)

Fig. 176: Identifying Data Link Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. Make sure the HDS communicates with the PCM. If it does not, go to the DLC

circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING ).

3. Select Shift Solenoid Valve A, B, C, and D Test in the Miscellaneous Test

Menu on the HDS.

4. Check that shift solenoid valve A, B, C, and D operate with the HDS. A

clicking sound should be heard.

If a clicking sound is heard, the valves are OK.

The test is complete, disconnect the HDS.

If no clicking sound is heard, go to step 5, and test the solenoid valves.

5. Raise the vehicle on a lift, or apply the parking brake, block rear wheels, and

raise the front of the vehicle. Make sure it is securely supported.

6. Remove the splash shield.
7. Disconnect the shift solenoid harness connector.

2008 Honda Civic LX

2006-08 TRANSMISSION Automatic Transmission - Civic (Except Hybrid)