Kia Rio: Automatic Transaxle System / Automatic Transaxle Control System

Kia Rio 2017-2021 YB Service Manual / 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 )

  

Keep the throttle position (15 - 25%) steady while driving the vehicle.

2)

Decelerate the vehicle by stepping on the brake (4th → 3rd → 2nd → 1st).

3)

Repeat the above procedure four times.

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 ...

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