Hyundai Genesis: Automatic Transmission Control System / Transmission Control Module (TCM) Description and Operation
Transmission Control Module (TCM) plays a role of the brain
for the automatic transmission. The module receives and processes
signals from various sensors and implements a wide range of Transmission
controls to ensure optimal driving conditions for the driver.
TCM is programmed for optimal response to any on-road
situation. In the event of a transmission failure or malfunction, TCM
stores the fault information in memory so that the technician can refer
to the code and quickly repair the transmission.
Functions
• |
Monitoring the vehicle's operating conditions to determine the optimal gear setting. |
• |
Performing a gear change if the current gear setting differs from the identified optimal gear setting. |
• |
Determining the need for damper clutch (D/C) activation and engages the clutch accordingly. |
• |
Calculating the optimal line pressure level by constantly monitoring the torque level and adjusts the pressure accordingly. |
• |
Diagnosing the automatic transmission for faults and failures. |

Components Location
[Vehicle Components]
1. Transmission Control Module(TCM)2. Injector Driver Box(IDB)3. Engine Control Module(ECM)4. Shift lever5. Date Link Connector (DLC)
[Transmission ...
1. TCM Connector and Terminal Function
2. TCM Terminal Function
Connector
PinDescriptionPinDescription1Battery power48-2Battery power49-3Power(IG 1)5027 Brake control solenoid valve4Ground51-5G ...
Other information:
The power outlet is designed to provide
power for mobile telephones or
other devices designed to operate
with vehicle electrical systems. The
devices should draw less than 180
W(Watt) with the engine running.
To open the cover, press the cover
and it will slowly open. To close the
c ...
Removal
Air lumbar support and bolster assembly
1.
Disconnect the negative (-) battery terminal.
2.
Remove the front seat back cover.
(Refer to Body - "Front Seat Back Cover")
3.
Remove the Front seat back (A) after loosening the mounting clip.
4.
Unscrew the fixing screws and re ...