Hyundai Elantra AD: Indicators And Gauges

Sixth generation (AD; 2017–2020) / Hyundai Elantra AD 2017-2020 Service Manual / Body Electrical System / Indicators And Gauges

Instrument Cluster Components and Components Location

Components

[General Standard Type (3.5" OLED)]

[MONO Type (3.5")]

[General Super Vision Type (4.2" LCD)]

Connector Pin Information

No	Description	No	Description
1	GND	21	Trip switch (-)
2	Illumination (-)	22	Trip switch 1 (+)
3	Rheostat switch (Down)_Input	23	Trip switch 2 (+)
4	Rheostat switch (Up)_Input	24	-
5	Dentent	25	Driver mode switch_Input (AT only)
6	AT ('P' Position)	26	-
7	AT ('R' Position)	27	-
8	AT ('N' Position)	28	Washer level low signal
9	AT ('D' Position)	29	Multimedia-CAN (Low)
10	AT ('S' Position)	30	Multimedia-CAN (High)
11	Immobilizer_Input	31	-
12	Vehicle speed_Input	32	Chassis-CAN (High)
13	Alternator_Input	33	Chassis-CAN (Low)
14	Fuel sender (+)_Input	34	-
15	Vehicle speed_Output	35	-
16	Fuel sender (-)_Input	36	Heated steering wheel_Input
17	Water Separator_Input	37	GND
18	Air Bag (+)_Input	38	-
19	Oil press switch_Input	39	IGN 1
20	Tail lamp_Input	40	Battery (+)

Instrument Cluster Schematic Diagrams

Circuit Diagram

[General Standard]

[MONO Type]

[General Supervision]

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
LKAS	Lane Keeping Assist 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
PAS	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.

[Standard Type]

[Super vision Type]

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 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 related parts, to prevent damage.

1.	Disconnect the negative (-) battery terminal.

2.	Remove the cluster fascia panel. (Refer to Body - "Cluster Fascia Panel")

3.	Separate the instrument cluster (A) after loosening the mounting screws.

4.	Remover the instrument cluster (A) after disconnect the cluster connector (B).

Installation

1.	Install the cluster after connect the cluster connectors.

2.	Install the cluster fascia panel.

Connect the negative (-) battery terminal.

•	Perform variant coding after exchanging the instrument cluster.

Inspection

Check point (Warning indicator)

•	Fault conditions and normal operating conditions, refer to the owner's manual.

Ref Symbol

Name

Color

Signal input

Signal Control

Check point

Turnsignal (Left)

Green

CAN

BCM
(Gateway)

1.	Multifunction Switch

BCM

3.	CAN Failure

Turnsignal (Right)

Green

CAN

BCM
(Gateway)

1.	Multifunction Switch

BCM

3.	CAN Failure

Tail Lamp

Green

CAN

BCM
(Gateway)

1.	Multifunction Switch

BCM

3.	CAN Failure

Fog Lamp

Green

CAN

BCM
(Gateway)

1.	Multifunction Switch

BCM

3.	CAN Failure

High Beam

Blue

CAN

BCM
(Gateway)

1.	Multifunction Switch

BCM

3.	CAN Failure

Warning

Yellow

CAN

BSD

1.	BSD System

2.	CAN Failure

TPMS

1.	TPMS System

2.	CAN Failure

SCC

1.	SCC System

2.	CAN Failure

LDWS

1.	LDWS System

2.	CAN Failure

FCW

1.	FCW System

2.	CAN Failure

HBA

1.	HBA System

2.	CAN Failure

BCM

1.	Exterior Lamp

BCM

3.	CAN Failure

Hard-wired

Low Washer

1.	Whasher fluid lever sensor

2.	Wiring Failure

Digital Input

Reminders when service checks

Battery Charge

Red

Hard-wired

Alternator

1.	Alternator

2.	Wiring Failure

Battery

Oil Pressure

Red

Hard-wired

ECM

1.	Oil Pressure Sensor

2.	Wiring Failure

ECM

4.	CAN Failure

Check Engine

Yellow

CAN

ECM

2.	CAN Failure

Immobilizer

Yellow

CAN
+
Hard-wired

IMMOBILIZER
SMK

1.	Immobilzer System

SMK

BCM

4.	CAN Failure

5.	Hard-wired

Parking Brake
Brake Fluid
EBD
EPB
EVP

Red

CAN

BCM
(Gateway)
EBD
EPB
EVP
ABS
TCS

BCM

2.	ABS System

3.	EPB System

4.	CAN Failure

5.	Parking Brake Switch

6.	Brake Oil Lever Sensor

ABS

Yellow

CAN

ABS

1.	ABS System

2.	CAN Failure

ESC

Yellow

CAN

TCS

1.	ABS System

2.	CAN Failure

ESC Off

Yellow

CAN

TCS

1.	ABS System

2.	CAN Failure

EPB

Yellow

CAN

EPB

1.	EPB System

2.	CAN Failure

Auto Hold

White
Yellow
Green

CAN

TCS

1.	TCS System

2.	CAN Failure

Seat Belt

Red

CAN

BCM
(Gateway)

BCM

2.	CAN Failure

Airbag

Red

CAN

SRSCM

1.	SRSCM System

2.	CAN Failure

EPS
(MDPS)

Red

CAN

MDPS

1.	MDPS Unit System

2.	MDPS Motor

3.	CAN Failure

TPMS

Yellow

CAN

TPMS

1.	TPMS System

2.	TPMS Sensor

3.	CAN Failure

LKAS

Green
White
Yellow

CAN

LKAS

1.	LKAS System

2.	CAN Failure

Fuel Warning

Yellow

Direct
(Micom)

Fuel Sender

1.	Fuel Sendar Failure

2.	Wiring Failure

Door Open

Red

CAN

BCM
(Gateway)

BCM

2.	CAN Failure

3.	Door Sensor/switch

ECO

Green

Hard-wired

ECO Mode

1.	Drive Mode Switch

2.	ECM System

3.	TCU System

SPORT

Yellow

Hard-wired

SPORT Mode

1.	Drive Mode Switch

2.	ECM System

3.	TCU System

CRUISE

Green

CAN

ECM

2.	CAN Failure

SET

Green

CAN

ECM

2.	CAN Failure

HBA

Green

CAN

LDWS

1.	HBA System

2.	CAN Failure

AUTO STOP

Green
Yellow

CAN

ECM

2.	CAN Failure

AEB

Yellow

CAN

SCC

1.	AEB System

2.	CAN Failure

Check point (Gauge)

No	Name	Signal Input	Signal Control (Unit/Sensor)	Check Point
1	Speedometer	C-CAN	ABS/ESC	1) CAN Line failure
3	Tachometer	C-CAN	EMS	1) CAN Line failure
4	Cooling water temperature	C-CAN	EMS	1) CAN Line failure
5	Fuel	Hardwire	Fuel Sander	1) Fuel sender failure
5	Fuel	Hardwire	Fuel Sander	2) Wiring failure
6	Shift lever indicator	C-CAN	TCU	1) CAN Line failure

Diagnosis with GDS

The body electrocal system can be quickly diagnosed failed parts with vehicle diagnostic system (GDS).

The diagnostic system (GDS) provides the following information.

(1)	Self diagnosis : Checking the failure code (DTC) and display

(2)	Current data : Checking the system input/output data state

(3)	Actuator test : Checking the system operation condition

(4)	Additional function : Other controlling such as he system option and zero point adjustment

2.	Select the 'Car model' and the system to be checked in order to check the vehicle with the tester.

3.	Select the 'Body Control Module (BCM)' to check the 'Cluster Module (CLU)'.

4.	Select the 'Current Data" menu to search the current state of the input/output data. The input/output data for the sensors corresponding to the cluster module (CLU) can be checked.

5.	To check the input value of cluster illumination, select option "Actuation test".

CLU Variant Coding

After replacing the cluster with a new one, must be performed the "Variant Coding" procedure.

1.	Connect the cable of GDS to the data link connector in driver side crash pad lower panel, turn the power on GDS.

2.	Select model and "BCM".

3.	Select Variant coding mode to perform.

4.	If the trouble codes occurred when performing variant coding, try the CLU variant coding again after checking the installation status of CLU system.

Troubleshooting

Error Item

Failure symptom

Inspection items

Detailed inspections

Relevant Parts/
Components

Screen display

TFT-LCD screen does not turn on

1.	Connector attachments

2.	Components

1.	Check the connector attachments

2.	Check B+, IGN and GND wiring

3.	Check the components

Connectors, wiring, fuses, dashboard

Warning light

Airbag warning lamp malfunction

1.	Connector attachments

C-CAN

3.	Components

1.	Check airbag + signal (connectors)

2.	Check C-CAN (ACU4) signal

3.	Check the FPC attachment inside the dashboard

ACU Connectors, wiring, fuses, dashboard

Mode conversion

Integrated driving mode malfunction

1.	Connector attachments

Switch

3.	Components

1.	Check the switch input (connector)

2.	Check the switch signal input (disconnection or shorting)

3.	Check conversion with dashboard component

Switch connector, wiring dashboard

Illumination

Interior light brightness cannot be controlled.

1.	Connector attachments

Switch

3.	Components

1.	Check if the light switch's input signal reaches the connector

2.	Check ILL- and DETENT signals

3.	Check the TAIL+ signal input

Switch connector, wiring dashboard

Warning Sound

No dashboard alarm

1.	Connector attachments

2.	Car speakers

3.	Components

1.	Check the speaker output connector

2.	Check the car speakers

Speaker connectors, wiring dashboard

Fuel indicator

Faulty fuel gauge indication

1.	Connector attachments

2.	Fuel sender

3.	Components

1.	Check fuel input and GND connectors (open, short or input resistance values)

2.	Check fuel sender

Fuel sender connector, wiring dashboard

Fuses And Relays

Components and Components Location Component Location [Engine Room] 1. Engine room junction block [Interior Relay] 1. Smart junction block ...

Power Door Locks

Components and Components Location Component Location 1. DDM (Driver Door Module) 2. ADM (Assist Door Module) 3. SJB (Smart Junction Block) 4. Door lock knob 5 ...