No.17 Excessive Shift Shock From N To D Or N To R Position/Range

NO.17 EXCESSIVE SHIFT SHOCK FROM N TO D OR N TO R POSITION/RANGE [AW6A-EL]

Description/Possible Cause:

Diagnostic procedure

Step 1-Step 7:

Initial Learning

WARNING:
- When performing initial learning, be aware of other vehicles, people, and other impediments in order to avoid an accident.

NOTE:
- While self-learning control gradually reduces shock during normal driving, initial learning is performed to initially learn a certain amount of driving conditions.

1. Warm-up

- Increase the ATF temperature by leaving the vehicle idling or performing city driving. Verify that the ATF temperature is between 66-110 °C {151-230 °F}. If the ATF temperature is outside this range, work to bring it inside the range.

CAUTION:
- Do not raise the ATF temperature by stalling the engine.

NOTE:
- If the ATF temperature is not between 66-110 °C {151-230 °F}, initial learning cannot be performed.
Before learning, inspect for variable shift shock.

2. Garage shift learning

- With the vehicle standing still, depress the brake pedal and keep the selector lever in N position for 3 s. Then, shift the selector lever from the N position into D range, and maintain in this condition for 3 s. Repeat this procedure 5 times. Then repeat it 5 times in the same way for R position.

3. Gear shift control learning

- In D range, with the accelerator opening between 25-30%, drive until you reach 6th gear and a vehicle speed of 80 km/h {50 mph} or higher. Then, release the accelerator pedal and coast, and bring the vehicle to a stop in at least 60 s. Repeat this procedure 10 times.

4. Inspect learning results

- Verify that variable speed shock and shift shock have decreased compared to the conditions before learning.