Delayed Engagement After Shifting From N To R, or Excessive Shock When Shifted Into R (A/T)

Delayed engagement after shifting from N to R, or excessive shock when shifted into R

Diagnostic Procedure:

1. Worn or damaged engine or transmission mounts

2. Shift solenoid valve E defective

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

4. Shift cable broken or out of adjustment

5. Connection between the shift cable and transmission or body is worn

6. Input shaft (mainshaft) speed sensor defective

7. Output shaft (countershaft) speed sensor defective

8. ATF temperature sensor

9. Shift fork shaft stuck

10. Foreign material in separator plate orifice

11. Shift valve E defective

12. 4th/reverse accumulator defective

13. Lock-up shift valve defective

14. 4th clutch defective

Also check for:

- Check engine and transmission mounts.
- 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 the A/T clutch pressure control solenoid valve 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 lever.
- 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 for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Check the 4th clutch pressure. A/T Pressure Test
- Inspect the servo valve and the O-ring for wear and damage.
- 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 lock-up shift valve in the regulator valve body for free movement, and check the lock-up shift valve spring for wear and damage.