Inspection Procedures
- The actuator test of the underdrive solenoid valve
Sound of operation can be heard?
Yes: Go to next step.
No: Replace the underdrive solenoid valve
- Hydraulic pressure test
- Measure the hydraulic pressure for each element when in range.
Is the pressure normal?
Yes: Go to next step.
No: Go to step 5.
- Check the Underdrive clutch system
- Remove the transaxle assembly, valve body cover and valve body.
- Piston should operate and pressure should be maintained when air is blown through the underdrive clutch oil hole in the transaxle case.
Is the underdrive clutch system normal?
No: Go to next step.
Yes: Go to step 5.
- Check the Underdrive clutch
- Check for burning of the facing, defective piston seal rings, and interference at the retainer.
- Clean the valve body (Valve body disassembly, cleaning and reassembly)
- Pay particular attention to loosening of bolts, and valve bodies.
- If the damage cannot be repaired, replace the valve body assembly.