Hyundai i-30: Ignition System / Ignition Coil

The ignition coil is mounted on the top side of the cylinder head cover end. The ignition coil consists of the primary coil that receives battery power and the secondary coil that generates high voltage.

When the current in the primary coil is cut off by the ignition signal of the ECM, the rapid change of the magnetic flux by the mutual induction action is induced to the secondary coil and high voltage is generated depending on the coil winding ratio.

This high voltage generated from the secondary coil is caught in the spark plug gap and discharges as the electric field is destroyed to generate a spark.

Connector assembly status test

Test for changing position of each ignition coil

A : Ignition coil w/ misfire code

B : Ignition coil w/o misfire code

Ignition Coil #1 (Cylinder #1)

Ignition Coil #2 (Cylinder #2)

Ignition Coil #3 (Cylinder #3)

Ignition Coil #4 (Cylinder #4)

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...

Spark Plug

Description and operation Description A spark plug is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture therein by means of an electric spark, while containing combustion pressure within the engine...

Other information:

Hyundai i30 (PD) 2018-2025 Owner's Manual: Key ignition switch

Whenever the front door is opened, the ignition switch will illuminate, provided the ignition switch is not in the ON position. The light will go off immediately when the ignition switch is turned on or go off after about 30 seconds when the door is closed...

Hyundai i30 (PD) 2018-2025 Service Manual: Heater & A/C Control Unit (Manual)

Components and components location Components Connector [A] Pin NO Function Pin NO Function 1 Low 4 Middle Low 2 Common 5 Middle High 3 Ground 6 High Connector [B] Pin NO Function Pin NO Function 1 Battery (+) 21 IGN2 2 ISG B+ 22 IGN1 3 ILL+ (TAIL) 23 - 4 Sensor REF (+5V) 24 - 5 Mode actuator feedback 25 - 6 Temperature actuator feedback 26 - 7 Intake actuator feedback 27 MAX Blower ON Signal 8 EVAP Sensor (+) 28 PTC Relay 3 9 AMB Sensor (+) 29 PTC Relay 2 10 Mode actuator (Vent) 30 PTC on signal 11 Mode actuator (Defrost) 31 Detent OUT (-) 12 Temperature actuator (Cool) 32 - 13 Temperature actuator (Warm) 33 C_CAN High 14 Intake actuator (Fresh Air) 34 C_CAN Low 15 Intake actuator (Recirculated Air) 35 - 16 HTD (Rear defog indicator) 36 ECV + 17 Rear defog switch 37 ECV- (Ground) 18 - 38 Sensor ground 19 Blower ON signal to common 39 Ground 20 ILL- (RHEO) 40 Ground Repair procedures Replacement 1...