Hyundai Sonata LF: Ignition System / Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Engine Electrical System / Ignition System / Repair procedures

On-vehicle Inspection

Inspect ignition coil assembly and Perform spark test

Check for DTCs.

•	If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC. (Refer to DTC guide)

Check if sparks occur.

(1)	Remove the engine cover.

(2)	Remove the ignition coils.

(3)	Using a spark plug wrench, remove the spark plugs.

(4)	Disconnect the injector extension connectors.

(5)	Ground the spark plug to the engine.

(6)	Check if sparks occur at each spark plug while engine is being cranked.

•	Do not crank the engine for more then 5 seonds.

3.	If sparks do not occur, perform the following test.

4.	Using a spark plug wrench, install spark plugs.

5.	Install the ignition coils.

6.	Install the engine cover.

Description and Operation

Description Ignition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data for the engine operating conditions are pre-pro grammed in the memory of the ECM (Engine Control Module)...

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...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Injector Repair procedures

Inspection 1. Turn the ignition switch OFF. 2. Disconnect the injector connector. 3. Measure resistance between the injector terminals 1 and 2. 4. Check that the resistance is within the specification. Specification: Refer to “Specification” Removal In case of removing the high pressure fuel pump, high pressure fuel pipe, delivery pipe, and injector, there may be injury caused by leakage of the high pressure fuel...

Hyundai Sonata LF 2014-2019 Service Manual: Manifold Absolute Pressure Sensor (MAPS) Description and Operation