D Position Test

Shift into the D position and fully depress the accelerator pedal and check the following points.

1. Check the up-shift operation.

   Check that 1-2, 2-3 and 3-4 up-shifts take place.

   4th Gear Up-shift Prohibition Control

   • Engine coolant temperature is 40°C (104°F) or less and vehicle speed is at 70 km/h (43 mph) or less.
   • ATF temperature is 0°C (32°F) or less.

   4th Gear Lock-up Prohibition Control

   • Brake pedal is depressed.
   • Accelerator pedal is released.
   • Engine coolant temperature is 60°C (140°F) or less.
   • ATF temperature is 10°C (50°F) or less.
2. Check for shift shock and slip.

   Check for shock and slip at the 1-2, 2-3 and 3-4 up-shifts.

3. Check for abnormal noise and vibration.

   Check for abnormal noise and vibration when up-shifting from 1-2, 2-3 and 3-4 while driving with the shift lever in the D position, and check while driving in the lock-up condition.

   The check for the cause of abnormal noise and vibration must be done thoroughly as it could also be due to loss of balance in the differential, torque converter clutch, etc.

4. Check abnormal shock and slip at kick-down.
5. Check the lock-up mechanism.
   • Drive in D position (4th gear), at a steady speed (lock-up ON).
   • Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.

     If there is a big jump in engine speed, there is no lock-up.