Hyundai Genesis (DH): Automatic Transmission Control System / Description and Operation
Automatic transmission system relies on various measurement
data to determine the current control status and extrapolate the
necessary compensation values. These values are used to control the
actuators and achieve the desired control output. If a problem with the
drivetrain, including the transmission, has been identified, perform
self-diagnosis and basic transmission inspection (oil and fluid
inspection) and then check the control system's components using the
diagnosis tool.
| Control System Composition |
It features a fail-safe mechanism that allows a vehicle to be driven home or to a dealer in the event of a transmission failure.
The limp home mode is engaged if the transmission
malfunctions. In this mode, the transmission operates at a minimal
functionality level, making it possible for the vehicle to reach a
service center.
Fail-Safe: Allows the vehicle to be driven safely in the event of a malfunction.
Limp Home: Maintains minimal functionality (*) in the event
of a malfunction, making it possible for the vehicle to reach a service
center.
(*) Minimal Functionality: Drive (fixed gear setting), Reverse, and Neutral
TCM is in constant communication with the control system's
components (sensors and solenoids). If an abnormal signal is received
for longer than the predefined duration, TCM recognizes a fault, stores
the fault code in memory, and then sends out a fault signal through the
self-diagnosis terminal. Such fault codes are independently backed up
and will not be cleared even if the ignition switch is turned off, the
battery is disconnected, or the TCM connector is disconnected.
|
Adjustment
TCM Learning
When shift shock occurs or parts related with the transmission are replaced, TCM learning should be performed.
In the following case, TCM learning is required.
Other information:Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the front bumper.
(Refer to Body - "Front Bumper Cover")
3.
Disconnect the front fog lamp connector (A).
4.
Remove the front fog lamp assembly (A) after loosening the mounting nut. Inspection with GDS
Initialization and diagnosis sequence by using GDS equipment.
The following is the summarized A/S procedure.
NoProcedure1Park the vehicle on level ground2Tire check3IGN1 ON4Head lamp Low Beam ON5Connection with diagnostic tool6Initial command by diagnostic tool7Clear DTC Code8IGN1 OFF > ON9Re- Connection with diagnostic t
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