Hyundai Sonata LF: Ignition System / Ignition Coil Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Engine Electrical System / Ignition System / Ignition Coil Description and Operation

Description

An ignition coil is an induction coil in an engine's ignition system which transforms the battery's low voltage to the high voltage needed to create an electric spark in the spark plugs to ignite the fuel. Coils have an internal resistor while others rely on a resistor wire or an external resistor to limit the current flowing into the coil from the battery 12 V supply.

Repair procedures

On-vehicle Inspection Inspect ignition coil assembly and Perform spark test 1. Check for DTCs. • If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC...

Ignition Coil Specifications

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Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Smart Key Unit Repair procedures

Removal Smart Key Unit 1. Disconnect the negative (-) battery terminal. 2. Remove the glove box. (Refer to Body - "Glove Box Upper Cover Assembly") 3. Remove the smart key unit (B) after disconnecting the connectors (A) and loosening the bolt and nut...

Hyundai Sonata LF 2014-2019 Service Manual: Special Service Tools