Hyundai Sonata: Indicators And Gauges / Instrument Cluster Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Body Electrical System / Indicators And Gauges / 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

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

Low speed CAN communication (MM-CAN)

A.	AV : Audio / Video Multimedia information Display

B.	TBT : Turn By Turn Navigation Information Display

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)
Smart Key departure	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)

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.

Instrument Cluster Schematic Diagrams

Circuit Diagram ...

Instrument Cluster Repair procedures

Removal • Put on gloves to protect your hands. • When prying with a flat-tip screwdriver, wrap it with protective tape, and apply protective tape around the re ...

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