Excessive Shock Or Flares On 1-2 Upshift Or 2-1 Downshift

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

Shift solenoid valve D defective

A/T clutch pressure control solenoid valve A defective

A/T clutch pressure control solenoid valve B defective

A/T clutch pressure control solenoid valve C defective

Transmission fluid pressure switch A (2nd clutch) defective

Foreign material in separator plate orifice

1st accumulator defective

2nd accumulator defective

1st check ball stuck

2nd check ball stuck

1st clutch defective

2nd clutch defective

Lock-up shift valve defective

Notes

Test the solenoid valve function with the HDS.

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

Inspect shift solenoid valve D for seizure, 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 for a clogged orifice in the separator plate. If the orifice is clogged, remove it, and clean the separator plate orifice.

Notes

Check the ATF strainer for debris. If the strainer is clogged with particles of steel or aluminum, inspect the ATF pump. If the ATF pump is OK, find the damaged components that caused the debris. If no cause for contamination is found, replace the torque converter.

Notes

Inspect the 1st accumulator piston, the O-ring, and the spring for wear and damage in the regulator valve body.

Notes

Inspect the 2nd accumulator piston, the O-ring, and the spring for wear and damage in the servo body.

Notes

Check that the 1st check ball and the 2nd check ball are not stuck in the main valve body.

Notes

Check the 1st and 2nd clutch pressures A/T Pressure Test.

Notes

Inspect the secondary shaft, the 1st clutch, and the 2nd clutch 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 plates are worn or damaged, replace them as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If they are OK, adjust the clearance with the clutch end-plate.

Notes

Inspect the 2nd clutch feed pipe. If the 2nd clutch feed pipe is scored, replace the end cover.

Notes

Replace the secondary shaft if the bushing for the 2nd clutch feed pipe is loose or damaged.