Honda 2004 Odyssey Service Manual page 871

Automatic Transmission
Symptom Troubleshooting Index (cont'd)
Symptom
The A/T does not
shift
Erratic shifting:
Fails to shift in
D and D3;
starts off in 5th
Erratic shifting:
Fails to shift in 2;
starts off in 4th
Erratic shifting:
Fails to shift in
D and D3;
starts off in 3rd
Excessive shock,
or flares on all
upshifts and
downshifts
Excessive shock,
or flares on 1-2
upshift or 2-1
downshift
14-258
Probable cause(s)
1. Input shaft (mainshaft)
speed sensor defective
2. Output shaft
(countershaft) speed
sensor defective
3. Modulator valve
defective
1. Shift solenoid valve B
defective
2. Shift valve B defective
1. Shift solenoid valve B
defective
2. Shift valve B defective
1. Shift solenoid valve A
defective
2. Shift valve A defective
1. A/T clutch pressure
control solenoid valves
A and B defective
2. Input shaft (mainshaft)
speed sensor defective
3. Output shaft
(countershaft) speed
sensor defective
4. ATF temperature sensor
defective
5. CPC valve A defective
6. Foreign material in
separator plate orifice
1. Foreign material in
separator plate orifice
2. 2nd accumulator
defective
3. 2nd check ball stuck
4. 2nd clutch defective
• Check the D indicator, and check for loose connectors.
• Check the line pressure.
Check the D indicator, and check for loose connectors.
Inspect the O-ring, and check the shift solenoid valve for
seizure.
Check the D indicator, and check for loose connectors.
Inspect the O-ring, and check the shift solenoid valve for
seizure.
Check the D indicator, and check for loose connectors.
Inspect the O-ring, and check the shift solenoid valve for
seizure.
• Check the D indicator, and check for loose connectors.
Inspect the A/T clutch pressure control solenoid valve
body gasket and ATF feed pipes for wear and damage.
If the A/T clutch pressure control solenoid valve is stuck,
inspect the CPC valves.
• Inspect the sensor O-rings.
• Check the 1st and 2nd clutch pressures.
• 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.
Notes