Hyundai Sonata: 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

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 ...

Power Door Locks
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Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Fuel Pump Repair procedures
Inspection [Fuel sender] 1. Turn the ignition switch OFF, and then remove battery (-) cable. 2. Remove the fuel pump assembly. 3. Using an ohmmeter, measure the resistance between terminals 1 and 6 of sender connector (A) at each float level. Pin No.Description1Fuel sender ground 2 ...

Hyundai Sonata LF 2014-2019 Service Manual: Electric Parking Brake (EPB) Schematic Diagrams
Schematic Diagram Terminal function Pin NOFunctionPin NOFunction6EPB signal 12RR EPB motor power 7EPB signal 23RR EPB motor ground8EPB signal 312RL EPB motor power 9EPB signal 413RL EPB motor ground ...

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