Delayed Engagement After Shifting From N To D or S, or Excessive Shock When Shifting

Delayed engagement after shifting from N to D or S, or excessive shock when shifting

Diagnostic Procedure:

1. Worn engine or transmission mounts

2. Shift solenoid valve C defective

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

4. A/T clutch pressure control solenoid valve B defective

5. A/T clutch pressure control solenoid valve C defective

6. Shift cable broken or out of adjustment

7. Connection between shift cable and transmission or body is worn

8. Input shaft (mainshaft) speed sensor defective

9. Output shaft (countershaft) speed sensor defective

10. ATF temperature sensor defective

11. CPC valve A defective

12. CPC valve B defective

13. CPC valve C stuck

14. Foreign material in separator plate orifice

15. Shift valve C defective

16. Shift valve E defective

17. Servo control valve defective

18. 1st accumulator defective

19. 1st check ball stuck

20. One-way check ball stuck

21. 1st clutch defective

Also check for:

- Check the engine and transmission mounts.
- Check for a stored DTC, and check for loose connectors.
- Inspect the O-ring, and check for a seized shift solenoid valve.
- Inspect the A/T clutch pressure control solenoid valve body gasket and the ATF feed pipes for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valves.
- Check for a loose shift cable at the shift lever and the selector control lever.
- Inspect the ATF temperature sensor O-rings.
- Check the 1st 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, and inspect the clutch wave-plate height. If the discs and the flat-plates are worn or damaged, replace the discs and the flat-plates as a set. If the wave-plate 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.