Late Shift After Shifting From N to R, or Excessive Shock When Shifted Into R

Late shift after shifting from N to R, or excessive shock when shifted into R

Diagnostic Procedure:

1. Shift solenoid valve E defective

2. A/T clutch pressure control solenoid valve A defective

3. Shift cable broken or out of adjustment

4. Loose or poor connection between the shift cable and transmission or body is worn

5. Input shaft (mainshaft) speed sensor defective

6. Output shaft (countershaft) speed sensor defective

7. ATF temperature sensor defective

8. Shift fork shaft stuck

9. Foreign material in separator plate orifice

10. Shift valve E defective

11. 4th/reverse accumulator defective

12. Lock-up shift valve defective

13. 4th clutch defective

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.
- Inspect A/T clutch pressure control solenoid valve A filter/gasket and the O-rings for wear and damage, and inspect the solenoid valves for seizure.
- Check the input shaft (mainshaft) speed sensor and the output shaft (countershaft) speed sensor installation.
- Check for a loose shift cable at the shift lever and the selector control shaft.
- 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.
- Check for a missing shift fork bolt on the shift fork shaft.
- Check the 4th clutch pressure.
- Inspect the servo valve and the O-ring.