| How To Perform N
Position Learning |
If the automatic
transmission or the TCU is replaced, be sure to initialize the learned
values and perform N position learning.
| 1. |
Stop the vehicle by shifting the shift lever
to the P range and chock the tires. Turn the ignition switch to the
ON position
|
Check that the vehicle is stationary
before
operation. | |
| 2. |
Release the shift lock, and shift the shift
lever to the N range. |
| 3. |
Check that the TCU N position mark is
correct. |
| 4. |
Check that the N position is correctly
displayed on the High-Scan Pro.
|
The command cannot be input unless the
ignition switch is on, the shift lever is in the N range, the
engine is stopped, and the vehicle speed is 0
km/h.
| -
|
Input NG is indicated: Check again
that the N position mark is correct. If it is incorrect,
adjust it. |
| -
|
Input OK is indicated: Turn the
ignition switch off after releasing the shift lock and
shift the shift lever to the P range. Turn the ignition
switch on after 5
seconds. | | |
| 5. |
Shift the shift lever from the P to the D
position, then check that the indicator displays the correct
position.
| A. |
Display is correct: Check the trouble
code. |
| B. |
Display is incorrect: Perform the
initial
learning. | |
How To Perform Initial Learning
If the automatic
transmission or the TCU are replaced, or the TCU software is overwritten,
be sure to initialize the learned values and perform initial
learning.
| 1. |
Warm-up
Raise the ATF temperature by leaving the
vehicle idling or performing a city drive. Check the ATF temperature
using the special tester and make sure it is between 66 and 110°C.
If the oil temperature is outside this range, work to bring it
inside the range.
|
Do not attempt to raise the oil
temperature by stalling the
engine. |
|
If the oil temperature is not between 66
and 110°C, initial learning cannot be performed. Before
learning, check for shift shock or variable speed
shock. | |
| 2. |
Garage shift learning
With the vehicle stationary, depress the brake
and keep the shift lever in N for 3 seconds. Then, shift from N into
D, and maintain this condition for 3 seconds. Repeat this procedure
5 times. Then repeat 5 times in the same way for
R. |
| 3. |
Gear shift control learning
In D, with the throttle opening angle between
25 and 35%, drive until 6th gear and a vehicle speed of 110 km/h or
higher is reached. Then, release the accelerator pedal and coast,
and bring the vehicle to a stop within 60 seconds. Repeat this
procedure 10 times. |
| 4. |
Check learning results
Check that variable speed shock and shift
shock have decreased compared to the conditions before
learning. |
