Kia Optima Hybrid: Hydraulic System / Valve Body Components and Components Location

Component Location

1. Automatic transaxle
2. Valve body assembly


1. Pressure Control Valve(PCV) adjust screw
8. Underdrive Brake Control Solenoid Valve(UD/B)
2. Solenoid valve bracket
9. 26 Brake Control Solenoid Valve(26/B)
3. Oil temperature sensor
10. 35R Clutch Control Solenoid Valve(35R/C)
4. Line Pressure Control Solenoid Valve
11. Torque Converter Control Solenoid Valve (T/CON)
5. SS-A Solenoid Valve(ON/OFF)
12. LR/B pressure flow hole
6. SS-B Solenoid Valve(ON/OFF)
13. UD/B pressure flow hole
7. Overdrive Clutch Control Solenoid Valve(OD/C)
14. Accumulator 

Valve Body Flow

1. To cooler
9. Lubrication (Front)
2. From cooler 
10. 35R clutch pressure
3. Lubrication (Rear)
11. 26 brake pressure
4. Overdrive pressure
12. From oil pump
5. Reducing pressure (red2)
13. To oil pump
6. Reducing pressure (red1)
14. Underdrive pressure
7. Engine clutch pressure
15. Low & reverse pressure
8. Lubrication (Engine clutch)

Valve Body Description and Operation

Description The valve body is essential to automatic transaxle control and consists of various valves used to control the oil feed from the oil pump. Specifically, these valves consist of pressure regulator ...

Valve Body Repair procedures

Removal     • Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage system. Failure to follow the safety instructions ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Repair procedures

Inspection Test the horn by connecting battery voltage to the 1 terminal and ground the 2 terminal. The horn should make a sound. If the horn fails to make a sound, replace it. Horn Relay Inspection 1. Remove the horn relay (A) from the engine room relay box. 2. There should be continuity between the ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Components and Components Location

Component Location 1. Seat Memory Unit (IMS)2. IMS control switch3. IMS driver power seat control ...

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