Honda ACCORD HYBRID 2005 Service Manual page 850

Automatic Transmission
S y m p t o m T r o u b l e s h o o t i n g I n d e x (cont'd)
Symptom Probable cause(s) Notes
Vehicle m o v e s in
D, D3, 2, and R,
but not in 1
1. 1st-hold accumulator
defective
2. 1st-hold clutch defective
• Check the 1st-hold clutch pressure.
• Inspect the secondary shaft and 1st/1st-hold clutch
assembly for wear and damage.
• Inspect the clutch piston, clutch piston check valve, and 0 -
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, and inspect the clutch w a v e d -
plate height. If the discs and flat-plates are w o r n or
d a m a g e d , replace the discs and flat-plates as a set. If the
waved-plate height is out of tolerance, replace the w a v e d -
plate, if the discs and plates are OK, adjust the clearance
w i t h the clutch end plate.
Vehicle moves in
D, D3, 1, and R,
but not in 2
1. 2nd accumulator
defective
2. 2nd clutch defective
• Check the 2nd clutch pressure.
• Inspect the secondary shaft and 2nd clutch assembly for
wear and damage.
• Inspect the clutch piston, clutch piston check valve, and 0 -
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, and inspect the clutch w a v e d -
plate height. If the discs and flat-plates are w o r n or
d a m a g e d , replace the discs and flat-plates as a set. If the
waved-plate height is out of tolerance, replace the w a v e d -
plate. If the discs and plates are OK, adjust the clearance
w i t h the clutch end plate.
Vehicle moves in
D, D3, 2, and 1,
but not in R (or
moves f o r w a r d
in R)
1. Shift fork shaft stuck
2. M o d u l a t o r valve
defective
3. Reverse CPC valve
defective
4. 5th accumulator
defective
5. 5th clutch defective
6. Reverse gears w o r n or
d a m a g e d
• Check the line pressure and 5th clutch pressure.
• Check for a missing shift fork bolt on the shift fork shaft.
• Check the ATF strainer for debris. If the ATF strainer is
clogged w i t h particles of steel or a l u m i n u m , inspect the ATF
p u m p . If the ATF p u m p is OK, find the d a m a g e d
c o m p o n e n t s that caused the debris. If no cause for the
contamination is f o u n d , replace the t o r q u e converter.
• Inspect the reverse selector gear teeth chamfers, and
inspect the engagement teeth chamfers of the countershaft
5th gear and reverse gear. Replace the reverse gears and
the reverse selector if they are w o r n or d a m a g e d . If the
transmission makes clicking, g r i n d i n g , or w h i r r i n g noises,
also replace the mainshaft 5th gear, reverse idler gear, and
countershaft 5th gear.
• Inspect the clutch piston, clutch piston check valve, and 0 -
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, and inspect the clutch w a v e d -
plate height. If the discs and flat-plates are w o r n or
d a m a g e d , replace the discs and flat-plates as a set. If the
waved-plate height is out of tolerance, replace the w a v e d -
plate. If the discs and plates are OK, adjust the clearance
w i t h the clutch end plate.
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