Kia Optima Hybrid: Automatic Transaxle Control System / Underdrive Brake Control Solenoid Valve (UD/B_VFS) Description and Operation

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Automatic Transaxle System / Automatic Transaxle Control System / Underdrive Brake Control Solenoid Valve (UD/B_VFS) Description and Operation

Description
Underdrive brake control solenoid valve(UD/B_VFS) is attached to the valve body. This variable force solenoid valve directly controls the hydraulic pressure to the underdrive brake.

35R Clutch Control Solenoid Valve (35R/C_VFS) Repair procedures

Inspection 1. Turn ignition switch OFF. 2. Remove the air duct (A). Tightening torque: 7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft) 3. Remove the air cleaner assembly. (1) Disconnect the breather hose ...

Underdrive Brake Control Solenoid Valve (UD/B_VFS) Specifications

Specifications Direct control VFS [UD/B] Control type : Normal high type Control Pressure kpa(kgf/cm?, psi)500.14 ~ 9.81(5.1 ~ 0.1, 72.54 ~ 1.42)Current value (mA)50 ~ 850 Internal resistance (?)5.1 ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Transaxle Control Module (TCM) Repair procedures


Inspection TCM Problem Inspection Procedure 1. TEST TCM GROUND CIRCUIT: Measure resistance between TCM and chassis ground using the backside of TCM harness connector as TCM side check point. If the problem is found, repair it. Specification: Below 1? 2. Test TCM Connector: Disconnect the TCM connector ...

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


Inspection 1. Check the audio remote control switch for resistance between terminals in each switch position. [Trip + Reset] SwitchConnector terminalResistance (±5%)Reset3 - 5 (LH)5.54 k?Trip3 - 5 (LH)2.54 k? [Trip + Mute + Reset] SwitchConnector terminalResistance (±5%)Mute3-40 ?Trip (General option)2-52.55 ...

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