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:
Inside the fuse/relay box covers, you
can find the fuse/relay label describing
fuse/relay name and capacity.
✽ NOTICE
Not all fuse panel descriptions in
this manual may be applicable to
your vehicle. It is accurate at the
time of printing. When you inspect
the fuse box on your vehi ...
Inspection
1.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
2.
Check for continuity between terminals (A) of the power trunk switch.
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash ...