Kia Optima DL3: Automatic Transaxle System / Hydraulic System

Kia Optima DL3 2019-2026 Service and Repair Manual / Automatic Transaxle System / Hydraulic System

Components and components location

Components Location

1. Automatic transaxle 2. Oil filter 3. Mechanical oil pump	4. Converter housing 5. Torque converter

Description and operation

Description

The components of the hydraulic system

•	Automatic Transaxle Fluid (ATF)

•

Oil pump

•	Oil filter

•	Valve body

Operation

1.	The oil pump is powered by the engine.

2.	ATF passes through the oil filter and gets distributed along the oil channels.

3.	TCM controls the hydraulic pressure using solenoid valves and controls clutch and brake operations.

Oil-pressure characteristics input

Solenoid valve oil-pressure characteristics input procedure

1.	Perform the oil-pressure characteristics input procedure using the KDS.

2.	Click the "OK" button after checking the condition.

3.	Click the "OK" button after selecting the replaced solenoid valve.

4.	Check the code that was recorded before installing the new solenoid valve.

5.	Click the "OK" button after inputting oil pressure characteristics for the replaced solenoid valve.

❮Automatic Transaxle System

Components and components location Components 1. Transaxle Support Braket 5. Roll Rod Support Bracket 2.

Fluid❯

Repair procedures Inspection Automatic Transaxle Fluid (ATF) Level Check When checking the ATF level, be careful not to allow foreign substance (like dust) to enter through the filler hole.

Other information:

Kia Optima DL3 2019-2026 Service and Repair Manual: Compressor oil

Repair procedures Oil Specification 1. The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed. 2. Compressor (PAG) oil varies according to compressor model.

Kia Optima DL3 2019-2026 Service and Repair Manual: Ambient Temperature Sensor

Description and operation Description The ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature.