Honda 2004 Odyssey Service Manual page 623

Automatic Transmission
Symptom Troubleshooting Index (cont'd)
Symptom
Vehicle moves in 1.
2 and R, but not
in D4, D3, or 1 2.
3.
Vehicle moves in 1.
D4, D3, 1, and R,
but not in 2 2.
3.
4.
5.
Vehicle moves in 1.
D4, D3, 2, and 1, 2.
but not in R (or
moves forward 3.
in R)
4.
5.
6.
14-10
Probable cause(s)
1st accumulator
defective
1st gears worn or
damaged
1st clutch defective
Shift solenoid valve A
defective
Shift valve A defective
2nd accumulator
defective
2nd gears worn or
damaged
2nd clutch defective
Shift fork shaft stuck
Modulator valve
defective
Reverse Clutch
Pressure Control (CPC)
valve defective
4th accumulator
defective
4th clutch defective
Reverse gears worn or
damaged
• Inspect 1st clutch pressure.
• Inspect the secondary shaft and 1st/2nd clutch assembly for
wear and damage.
• Inspect the clutch piston and O-rings. Check the spring
retainer for wear and damage. Inspect the clutch end-plate-to-
top-disc clearance. If the clearance is out of tolerance, inspect
the clutch discs and plates for wear and damage. If the discs
and plates are worn or damaged, replace them as a set. If they
are OK, adjust the clutch end plate clearance.
• Check the 2 indicator, and check for loose connectors. Inspect
the O-rings, and check the shift solenoid valve for seizure.
• Inspect the secondary shaft and 1st/2nd clutch assembly for
wear and damage.
• Inspect the clutch piston and O-rings. Check the spring
retainer for wear and damage. Inspect the clutch end-plate-to-
top-disc clearance. If the clearance is out of tolerance, inspect
the clutch discs and plates for wear and damage. If the discs
and plates are worn or damaged, replace them as a set. If they
are OK, adjust the clutch end plate clearance.
• Check the line pressure and 4th clutch pressure.
• Check for a missing shift fork bolt on the shift fork shaft.
• If the ATF strainer is clogged with particles of steel or
aluminum, inspect the ATF pump. If the ATF pump is OK, and
no cause for the contamination is found, replace the torque
converter.
• Inspect the reverse selector gear teeth chamfers, and inspect
the engagement teeth chamfers of the countershaft 4th and
reverse gear. Replace the reverse gears and the reverse
selector if they are worn or damaged. If the transmission
makes clicking, grinding, or whirring noises, also replace the
mainshaft 4th gear, reverse idler gear, and countershaft 4th
gear.
• If the 4th clutch feed pipe guide in the end cover is scored by
the mainshaft, inspect the ball bearing for excessive
movement in the transmission housing. If the ball bearing is
OK, replace the end cover as it is dented. The O-ring under the
guide is probably worn.
• Replace the mainshaft if the bushing for the 3rd and 4th clutch
feed pipes are loose or damaged. If the 4th clutch feed pipe is
damaged or out of round, replace the end cover.
• Inspect the clutch piston, clutch piston check valve, and O-
rings. Check the spring retainer for wear and damage. Inspect
the clutch end-plate-to-top-disc clearance. If the clearance is
out of tolerance, inspect the clutch discs and plates for wear
and damage. If the discs and plates are worn or damaged,
replace them as a set. If they are OK, adjust the clearance with
the clutch end plate.
Notes