Honda Accord 2008 Manual page 861

07/11/02 08:45:52 61TA0000_140_0018
Automatic Transmission
Symptom Troubleshooting Index (cont'd)
Symptom
Vehicle moves in D,
D3, 1, and R, but
not in 2
Vehicle moves in D,
D3, 2, and 1, but
not in R
Poor acceleration;
flares when
starting off in D, D3,
and R; stall speed
high in 2 and 1,
and in D and D3 in
1st and 2nd
14-16
Probable Cause(s)
1. 2nd accumulator defective
2. 2nd gears worn or damaged
3. 2nd clutch defective
1. Shift solenoid valve E defective
2. Shift fork shaft stuck
3. Shift valve E defective
4. 4th/reverse accumulator
defective
5. 4th clutch defective
6. Reverse gears worn or
damaged
1. Low ATF level
2. Shift cable broken or out of
adjustment
3. ATF pump worn or binding
4. Regulator valve stuck or spring
worn
5. ATF strainer clogged
6. Torque converter check valve
defective
Notes
• Check the 2nd clutch pressure.
• Inspect the clutch piston, the clutch piston check
valve, and the O-rings. Check the spring retainer
and the retainer seal 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. If the discs are worn or damaged, replace
them as a set. Inspect the clutch wave-plate height.
If the height is out of tolerance, replace the wave-
plate. If the discs and the plates are OK, adjust the
clearance with the clutch end-plate.
• Check for a stored DTC, and check for loose
connectors.
• Inspect shift solenoid valve E for seizure, and the
O-rings for wear and damage.
• Check for a missing shift fork bolt on the shift fork
shaft.
• Check the 4th clutch pressure.
• 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. If the
discs are worn or damaged, replace them as a set.
Inspect the clutch wave-plate height. If the height is
out of tolerance, replace the wave-plate. If the discs
and the plates are OK, adjust the clearance with the
clutch end-plate.
• Inspect the reverse selector gear teeth chamfers,
and inspect the engagement teeth chamfers of the
countershaft 4th gear and the reverse gear. Replace
the reverse gears and the reverse selector if they
are worn or damaged. If the transmission makes a
clicking, grinding, or whirring noise, also replace
the mainshaft 4th gear, the reverse idler gear, and
the countershaft 4th gear.
• Check the ATF level, and check the ATF cooler lines
for leakage and loose connections. If necessary,
clean the ATF cooler lines.
• Check for a loose shift cable at the shift lever and
the transmission control shaft.
• Improper alignment of ATF pump and torque
converter housing may cause ATF pump seizure.
The symptoms are mostly an rpm-related ticking
noise or a high pitched squeak.
• Check the ATF strainer for debris. If the ATF
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.