Kia Rio: Automatic Transaxle System / Automatic Transaxle Control System
Description and operation
| Description |
Automatic transaxle control system relies on various measurements to determine the current control status and determine the necessary compensation values. These values are used to control the actuators and achieve the desired control output.
Operation
*PCSV-A : Overdrive clutch, Low&Reverse brake control solenoid valve
*PCSV-B : 24 brake control solenoid valve
*PCSV-C : Underdrive clutch control solenoid valve
*PCSV-D : Torque converter control solenoid valve
*SCSV-A : ON/OFF solenoid valve
*LINE_VFS : Line pressure control solenoid valve
Repair procedures
| Adjustment |
TCM adaptive values learning
| • |
TCM adaptive values learning : When shift shock occurs or parts related with the transaxle are replaced, TCM learning should be performed. |
| • |
In the following case, TCM learning is required. |
| – |
Automatic transaxle assembly replacement |
| – |
TCM upgrade or replacement |
TCM adaptive values learning procedure
| • |
Static relearn (condition : ATF temperature 40 - 100°C (104 - 212°F) |
| 1) |
Step on the brake, and then pause for 3 seconds each on "N" range and "D" range. |
| 2) |
Repeat the above procedure four times.
|
| • |
Driving relearn |
| 1) |
Drive the vehicle through all the gears. (1st → 2nd → 3rd → 4th )
|
| 2) |
Decelerate the vehicle by stepping on the brake (4th → 3rd → 2nd → 1st). |
| 3) |
Repeat the above procedure four times. |
- Transaxle Control Module (TCM)
- Transaxle Oil Temperature Sensor
- Input Speed Sensor
- Output Speed Sensor
- Inhibitor Switch
- Shift Lever
- Shift Cable
Automatic Transaxle System
Specifications
Specifications
Automatic Transaxle
Item
Specification
Transaxle model
A4CF1
Engine model
...
Transaxle Control Module (TCM)
Description and operation
Description
The module receives and processes signals from various sensors and implements
a wide range of transaxle controls to ensure optimal driving conditi ...
Other information:
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Kia Rio 2017-2025 YB Service Manual: Engine Oil and Filter
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