Hyundai Ioniq (AE): Ignition System / Repair procedures

On-vehicle Inspection
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 4 injector 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 cylinder head center cover and the engine cover.

    DescriptionIgnition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data for the engine operating conditions are preprogrammed in the memory of the ECM (Engine Control Module).

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: General safety information and caution

    Safety PrecautionPrecautions To Take Before Servicing High Voltage System    • Since hybrid vehicles contain a high voltage battery, if the high voltage system or vehicles are handled incorrectly, this might lead to a serious accidents like electric shock and electric leakage.

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: High voltage shut-off procedures

    High Voltage Shut-off Procedures    • Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.

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