Hyundai Elantra: Ignition System / 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. (Refer to DTC guide)
2.
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 i ...

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 p ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Adjusting the Sensitivity of Smart Cruise Control
The sensitivity of vehicle speed when following the front vehicle to maintain the set distance can be adjusted. Go to the 'User Settings → Driver Assistance → SCC Reaction → Fast/Normal/Slow' on the LCD display. You may select one of the three stages you prefer. • Fast: Veh ...

Hyundai Elantra AD (2016-2020) Owners Manual: DCT warning messages
Steep grade This warning message is displayed when vehicle is driven slowly on a grade and the vehicle detects that the brake pedal is not applied. Driving up hills or on steep grades: To hold the vehicle on an incline use the foot brake or the parking brake. When in stop-and-go traffic ...

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