Hyundai Sonata: Instrument Cluster Description and Operation - Indicators And Gauges - Body Electrical SystemHyundai Sonata: Instrument Cluster Description and Operation

Description
Communication Network Diagram

Abbreviation
Expalnation
ACU
Airbag Control Unit
ADM
Assist Door Module
B_CAN
Body Controller Area Network
BCM
Body Control Module
BSD
Blind Spot Detection
C_CAN
Chassis Controller Area Network
CLU
Cluster Module
DATC
Dual Automatic Temp Control
DDM
Driver Door Module
ESC
Electronic Stability Program
EMS
Engine Management System
LDWS
Lane Departure Warning System
M_CAN
Multi media Controller Area Network
MDPS
Motor Driven Power Steering
P_CAN
Powertrain Controller Area Network
PSM
Power Seat Module
SAS
Steering Angle Sensor
SJB
Smart Junction Block
SMK
Smart Key Unit
SPAS
Smart Parking Assist System
TCU
Transmission Control Unit
TPMS
Tire Pressure Monitoring System
VDC
Vehicle Dynamic Control
TMU
Telematics System
ABS
Anti-lock Brake System
SCC
Smart Cruise Control

Cluster Variant Coding
As we have more options (ESC, MDPS, SCC, etc.) in the car, the dashboard now have more information to display depending on the chosen options.
For this reason, we need to learn which options the current vehicle when we replace the dashboard.
To address this issue, a course of learning based on the option required for the vehicle when replacing the dashboard should be carried out.
This is called Variant Coding.
Function
1.
High speed CAN communication (C-CAN)
A.
Custom Function : Boarding interlocking sheets, Welcome Light
B.
LDWS : Lane Departure Warning System
C.
SPAS: Smart Parking Assist System
2.
Low speed CAN communication (MM-CAN)
A.
AV : Audio / Video Multimedia information Display
B.
TBT : Turn By Turn Navigation Information Display
3.
Sound output
Instrument cluster and the external speakers connected to the output of the various beeps and sound effects.
If External AMP is applied, the directional alarm is outputted through the amp.

Sound
Description and function (CAN data receiver)
Welcome
Welcome (Key out and door open/closed state checked by BCM)
Goodbye
Goodbye (Cluster)
Door Open  warning
Kwy reminder warning (BCM), Vehicle speed is 5km/h or below & IGN switch is ACC or IGN or engine start & when vehicle speed is below 5 km/h or when the driver side door is opened
Seat belt warning
Driver seat belt warning (BCM)
PAS System  warning
PAS sensor fault warning (BCM)
Gear R
PAS warning when shift gear R (BCM and SPAS)
Parking Brake
Parking brake warning (BCM)
Start button
SSB button warning (SMK)
Rheostat light information
Rheostat warning when select the max or min degree (Cluster)
Smart Key departure
Smart key out warning (SMK) 
N0n smart key warning (SMK)
Smart Cruise
Change from the conventional cruise to the smart cruise(SCC)
Smart cruise driving information
Smart cruise function cancel (SCC)
conventional cruise
Change from the smart cruise to the conventional cruise(SCC)
Turn signal lamp (Tick)
Turn signal lamp warning (BCM)
Turn signal lamp (Tock)
Turn signal lamp warning (BCM)
Smart key battery low voltage
Warnig when driver push the SSB button with low voltage battery smart key (SMK)
EPB warning
Warning when change from Auto Hold to EPB lock (EPB)
Coolant temperature alarm
When the engine temperature is over 120 °C (EMS)

4.
User Setting Mode (USM)
Setting can be changed by using switchs (Menu, UP, Down and OK button). There are many items (for example, In/Out Seat Synchronization, In/Out Steering Wheel Synchronization, Auto Door Lock, Auto Door Lock Deactivate, Head Lamp Escort, Welcome Light, Welcome Sound, One Touch Turn Signal, Average Fuel Consumption Auto Reset, Brightness, and Content Setup) that can be set and customized. The signal flow during setting is as follows.
(1)
UMS settings are set, they are transmitted to BCM.
(2)
BCM transmits the settings via B_CAN to the relevant modules.
(3)
The module completes setting and transmits the modified setting to BCM.
(4)
BCM transmits the final settings via C_CAN to the cluster.
   
The cluster communicates directly with C-CAN units.
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