Vehicle Moves In M and R, But Not In D or D3

Vehicle moves in M and R, but not in D or D3

Diagnostic Procedure:

1. 1st gear one-way clutch defective

2. 1st gears worn or damaged

3. 1st clutch defective

Also check for:

- Check the 1st clutch pressure.
- Inspect the 1st gears and one-way clutch for wear and damage.
- Inspect the 1st clutch for wear and damage.
- Inspect the clutch piston, clutch piston check valve, and 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 plates for wear and damage, and also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.