Vehicle Moves In D, 2, and 1, But Not In R (A/T)

Vehicle moves in D, 2, and 1, but not in R

Diagnostic Procedure:

1. Shift solenoid valve E defective

2. Shift fork shaft stuck

3. Shift valve E defective

4. 4th accumulator defective

5. 4th clutch defective

6. Reverse gears worn or damaged

Also check for:

- Check for a stored DTC, and check for loose connectors.
- Inspect shift solenoid valve E for seizure, and the O-rings for wear and damage.
- Check for a missing shift fork bolt on the shift fork shaft.
- Check shift valve E in the main valve body for free movement, and check the shift valve E spring for wear and damage.
- Check the 4th clutch pressure.
- 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. If the discs are worn or damaged, replace them as a set. Inspect the clutch wave-plate height. If the 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.
- Inspect the reverse selector teeth chamfers, and inspect the engagement teeth chamfers of the countershaft 4th gear and the reverse gear. Replace the reverse gears and the reverse selector if they are worn or damaged. If the transmission makes a clicking, grinding, or whirring noise, also replace the mainshaft 4th gear, the reverse idler gear, and the countershaft 4th gear.