Excessive Shock or Flares On 3-4 Upshift or 4-3 Downshift

Excessive shock or flares on 3-4 upshift or 4-3 downshift

Worn engine or transmission mounts

Shift solenoid valve C defective

A/T clutch pressure control solenoid valve A defective

A/T clutch pressure control solenoid valve B defective

4th clutch transmission fluid pressure switch defective

CPC valve A defective

CPC valve B defective

Foreign material in separator plate orifice

Shift valve C defective

3rd accumulator defective

4th accumulator defective

3rd clutch defective

4th clutch defective

Clearance between clutch end-plate and top disc incorrect

Notes

Check the engine and transmission mounts.

Notes

Check for a stored DTC, and check for loose connectors.

Notes

Inspect the shift solenoid valve function with the HDS Shift Solenoid Valve Test, Replacement, and Shift Solenoid Wire Harness Replacement.

Notes

Check for a seized shift solenoid valve, and inspect the O-rings.

Notes

Inspect the A/T clutch pressure control solenoid valve A and B with the HDS A/T Clutch Pressure Control Solenoid Valve A and B Test.

Notes

Inspect the A/T clutch pressure control solenoid valve body gasket, the ATF feed pipes, and the O-rings for wear and damage.

Notes

Check for a clogged orifice in the transmission fluid pressure switch connector. If the orifice is clogged, remove it and clean the connector.

Notes

Check CPC valve A in the main valve body for free movement, and check the valve spring for wear and damage.

Notes

Check CPC valve B in the secondary valve body for free movement, and check the valve spring for wear and damage.

Notes

Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.

Notes

Check the 3rd and 4th clutch pressures A/T Pressure Test.

Notes

Inspect the 3rd and 4th clutches for wear and damage.

Notes

Check the 3rd and 4th accumulator pistons, the O-rings, and the springs in the accumulator body for wear and damage.

Notes

Inspect the clutch piston, the clutch piston check valve, and the O-rings. Check the spring retainer 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, and inspect the clutch wave-plate height. If the discs and the flat-plates are worn or damaged, replace the discs and the flat-plates as a set. If the wave-plate 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.