Excessive Shock or Flares on 4-5 Upshift or 5-4 Downshift

Excessive shock or flares on 4-5 upshift or 5-4 downshift

Shift solenoid valve A 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 D (5th clutch) defective

Shift fork shaft stuck

Foreign material in separator plate orifice

Shift valve C defective

Reverse inhibitor valve defective

D inhibitor valve defective

A/T clutch pressure control solenoid valve A accumulator defective

A/T clutch pressure control solenoid valve C accumulator defective

4th/reverse air check valve stuck

5th air check valve stuck

4th clutch defective

5th clutch defective

Clearance between clutch end-plate and top disc incorrect

Notes

Inspect the shift solenoid valve A function with the HDS Shift Solenoid Valve A and B Test.

Notes

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

Notes

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

Notes

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

Notes

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

Notes

Test the 5th clutch transmission fluid pressure switch operation with the HDS.

Notes

Check for a missing shift fork bolt on the shift fork shaft.

Notes

Check the shift fork shaft detent 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 shift valve C, the reverse inhibitor valve, and the D inhibitor valve in the main valve body for free movement. If the valves does not move, replace the main valve body.

Notes

Check the 4th and 5th clutch pressures A/T Pressure Test.

Notes

Inspect the clutch clearance for the 4th and 5th clutches.

Notes

Replace the secondary valve body.

Notes

Check the 4th/reverse air check valve (ball) in the main valve body for a stuck ball. If the check valve (ball) is stuck, replace the 4th/reverse air check valve.

Notes

Check the 5th air check valve (ball) in the torque converter housing for a stuck ball. If the check valve (ball) is stuck, replace the 5th air check valve.