Excessive shock or flares on 2-3 upshift or 3-2 downshift

Probable cause(s)

1. A/T clutch pressure control solenoid valve B defective
2. A/T clutch pressure control solenoid valve C defective
3. 3rd clutch transmission fluid pressure switch defective
4. Foreign material in separator plate orifice
5. 2nd accumulator defective
6. 3rd accumulator defective
7. 2nd check ball stuck
8. 2nd clutch defective
9. 3rd clutch defective

Notes

- Check the D indicator, and check for loose connectors. Inspect the solenoid valve filter/gasket for wear and damage, and inspect the solenoid valves for seizure.
- Check the 2nd and 3rd clutch pressures.
- Inspect the clutch piston, clutch piston check valve, and O-rings. Check the spring retainer and retainer seal 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 are worn or damaged, replace the discs as a set. Inspect the clutch waved-plate height. If the height is out of tolerance, replace the waved-plate. If the discs and plates are OK, adjust the clearance with the clutch end plate.
- Inspect the 3rd clutch feed pipe. If the 3rd clutch feed pipe is scored, replace it and O-ring under the feed pipe guide.
- Replace the secondary shaft if the bushing for the 3rd clutch feed pipe is loose or damaged.