Hyundai Elantra: Automatic Transaxle Control System / Transaxle Control Module (TCM) Description and Operation

Monitors the vehicle's operating conditions to determine the optimal gear setting.
Performs a gear change if the current gear setting differs from the identified optimal gear setting.
Determines the need for Damper Clutch (D/C) activation and engages the clutch accordingly.
Calculates the optimal line pressure level by constantly monitoring the torque level and adjusts the pressure accordingly.
Diagnoses the automatic transaxle for faults and failures.

Repair procedures
Adjustment Transaxle Control Module(TCM) Learning When shift shock is occurred or parts related with the transaxle are replaced, TCM learning should be performed. In the following case, TCM l ...

Transaxle Control Module (TCM) Schematic Diagrams
TCM Connector and Terminal Function TCM Terminal Function Connector [A] Connector [K] PinDescriptionPinDescriptionA1Overdrive clutch control solenoid valve(OD/C_VFS)K8FLEXRAY COMM. Signal HIGHA5 ...

Other information:

Hyundai Elantra AD (2016-2020) Service 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. Be sure to use oil specified for the model of compress ...

Hyundai Elantra AD (2016-2020) Service Manual: Line Pressure Control Solenoid Valve Components and Components Location
Components Location 1. 26 Brake Control Solenoid Valve (26/B)2. 35R Clutch Control Solenoid Valve (35R/C)3. Underdrive Brake Control Solenoid Valve (UD/B)4. Overdrive Clutch Control Solenoid Valve (OD/C)5. SS-A Solenoid Valve (ON/OFF)6. Torque Converter Control Solenoid Valve (T/CON)7. Line Pre ...

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