Hyundai Elantra (CN7): Indicators And Gauges / Troubleshooting

Hyundai Elantra (CN7) 2021-2026 Service Manual / Body Electrical System / Indicators And Gauges / Troubleshooting

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
2)
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
2)
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
2)
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

    Description and operation Description Abbreviation Expalnation ACUAirbag Control UnitADMAssist Door ModuleB_CANBody Controller Area NetworkBCMBody Control ModuleBCWBlind-Spot Collision WarningC_CANChassis Controller Area NetworkCLUCluster ModuleDATCDual Automatic Temp ControlDDMDriver Door ModuleESCElectronic Stability ProgramEMSEngine Management SystemLKASLane Keeping Assist SystemM_CANMulti media Controller Area NetworkMDPSMotor Driven Power SteeringP_CANPowertrain Controller Area NetworkPSMPower Seat ModuleSASSteering Angle SensorSJBSmart Junction BlockSMKSmart Key UnitPDWParking Distance WarningTCUTransmission Control UnitTPMSTire Pressure Monitoring SystemVDCVehicle Dynamic ControlTMUTelematics SystemABSAnti-lock Brake SystemCluster Variant CodingAs we have more options (ESC, MDPS, SCC, etc.

    Other information:

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Evaporator Temperature Sensor

    Description and operation DescriptionThe evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. The evaporator temperature sensor has the Negative Temperature Coefficient (NTC).

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Rear Corner Radar Unit

    Specifications Specifications Items Blind-Spot Collision Warning (BCW) Blind-Spot Collision- Avoidance Assist-Rear (BCA-R) Rated voltageDC 12VOperating voltage9V - 16VOperating speed30 km/h - 255 km/h60 km/h - 180 km/hSensible distance70m Curvature radiusStart : More

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