Hyundai Sonata LF: Indicators And Gauges / Troubleshooting

Hyundai Sonata LF 2014-2019 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

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

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...

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 knob5...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Cylinder Head Cover Repair procedures

Removal 1. Remove the engine cover. 2. Disconnect the battery negative terminal. 3. Remove the air clean hose. (Refer to Intake and Exhaust System - "Ari Cleaner") 4. Disconnect the engine wiring connector and haness clamp and then remove the cylinder head protector and wiring from engine...

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures