( TL19E1PE10400000000HAAT28 )

Excessive shock or flares on 1-2 upshift or 2-1 downshift

Probable Cause(s)

1. Shift solenoid valve E defective
2. A/T clutch pressure control solenoid valve A defective
3. A/T clutch pressure control solenoid valve B defective
4. A/T clutch pressure control solenoid valve C defective
5. 2nd clutch transmission fluid pressure switch defective
6. Foreign material in separator plate orifice
7. 1st accumulator defective
8. 2nd accumulator defective
9. 1st check ball stuck
10. 2nd check ball stuck
11. Lock-up shift valve defective
12. 1st clutch defective
13. 2nd clutch defective

Notes

- Check for a stored DTC, and check for loose connectors.
- Inspect the solenoid valve filter/gasket and the O-rings for wear and damage, and inspect the solenoid valves for seizure.
- Check the 1st and the 2nd clutch pressures.
- 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.
- Inspect the 1st clutch feed pipe. If the 1st clutch feed pipe is scored, replace the end cover.
- Replace the secondary shaft if the bushing for the 1st clutch feed pipe is loose or damaged.