Honda Civic. Manual — part 166

Replace the mainshaft if the
bushing for the 3rd clutch feed
pipe is loose or damaged.

Excessive shock
or flares on 3-4
upshift or 4-3
downshift

1. A/T clutch

pressure control
solenoid valve B
defective

2. A/T clutch

pressure control
solenoid valve C
defective

3. Foreign material

in separator plate
orifice

4. 3rd accumulator

defective

5. 4th accumulator

defective

6. 3rd clutch

defective

7. 4th clutch

defective

Check for a stored DTC, and
check for loose connections.

Test the solenoid valve function
with the HDS.

Inspect the A/T clutch pressure
control solenoid valve body
gasket, the ATF feed pipes, and
the O-rings for wear and
damage.

Check for a clogged orifice in
the separator plate. If the orifice
is clogged, remove it and clean
the separator plate orifice.

Check the ATF strainer for
debris. If the strainer is clogged
with particles of steel or
aluminum, inspect the ATF
pump. If the ATF pump is OK,
find the damaged components
that caused the debris. If no
cause for contamination is
found, replace the torque
converter.

Inspect the 3rd and 4th
accumulator pistons, the O-
rings, and the springs for wear
and damage in the servo body.

Check the 3rd and 4th clutch
pressures.

Inspect the mainshaft, the

2008 Honda Civic LX

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

secondary shaft, the 3rd clutch,
and the 4th clutch for wear and
damage.

Inspect the clutch piston, the
clutch piston check valve, and
the O-rings. Check the spring
retainer for wear and damage.
Inspect the clearance between
the clutch end-plate and the top
disc. If the clearance is out of
tolerance, inspect the clutch
discs and the plates for wear and
damage, and inspect the clutch
wave-plate height. If the discs
and the plates are worn or
damaged, replace them as a set.
If the wave-plate height is out of
tolerance, replace the wave-
plate. If they are OK, adjust the
clearance with the clutch end-
plate.

Inspect the 3rd and 4th clutch
feed pipes.

If the 3rd clutch feed pipe is
scored, replace it and the O-
rings under the feed pipe flange.

If the 4th clutch feed pipe is
scored, replace it and the O-
rings under the feed pipe flange.

Replace the secondary shaft if
the bushing for the 4th clutch
feed pipe is loose or damaged.

Replace the mainshaft if the
bushing for the 3rd clutch feed

2008 Honda Civic LX

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

pipe is loose or damaged.

Excessive shock
or flares on 4-5
upshift or 5-4
downshift

1. A/T clutch

pressure control
solenoid valve B
defective

2. A/T clutch

pressure control
solenoid valve C
defective

3. Foreign material

in separator plate
orifice

4. 4th accumulator

defective

5. 5th accumulator

defective

6. 4th clutch

defective

7. 5th clutch

defective

Check for a stored DTC, and
check for loose connections.

Test the solenoid valve function
with the HDS.

Inspect the A/T clutch pressure
control solenoid valve body
gasket, the ATF feed pipes, and
the O-rings for wear and
damage.

Check for a clogged orifice in
the separator plate. If the orifice
is clogged, remove it and clean
the separator plate orifice.

Check the ATF strainer for
debris. If the strainer is clogged
with particles of steel or
aluminum, inspect the ATF
pump. If the ATF pump is OK,
find the damaged components
that caused the debris. If no
cause for contamination is
found, replace the torque
converter.

Inspect the 4th and 5th
accumulator pistons, the O-
rings, and the springs for wear
and damage in the servo body.

Check the 4th and 5th clutch
pressures.

Inspect the mainshaft, the
secondary shaft, the 4th clutch,
and the 5th clutch for wear and
damage.

2008 Honda Civic LX

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

Inspect the clutch piston, the
clutch piston check valve, and
the O-rings. Check the spring
retainer for wear and damage.
Inspect the clearance between
the clutch end-plate and the top
disc. If the clearance is out of
tolerance, inspect the clutch
discs and the plates for wear and
damage, and inspect the clutch
wave-plate height. If the discs
and the plates are worn or
damaged, replace them as a set.
If the wave-plate height is out of
tolerance, replace the wave-
plate. If they are OK, adjust the
clearance with the clutch end-
plate.

Inspect the 4th clutch feed
pipes. If the 4th clutch feed pipe
is scored, replace it and the O-
rings under the feed pipe flange.

Replace the secondary shaft if
the bushing for the 4th clutch
feed pipe is loose or damaged.

Engine flares
while driving

1. A/T clutch

pressure control
solenoid valve B
defective

2. A/T clutch

pressure control
solenoid valve C
defective

3. Shift solenoid

Check for a stored DTC, and
check for loose connections.

Test the solenoid valve function
with the HDS.

Inspect the A/T clutch pressure
control solenoid valve body
gasket, the ATF feed pipes, and
the O-rings for wear and
damage.

2008 Honda Civic LX

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