Hyundai i-30: Ignition System / Ignition Coil

Hyundai i30 (PD) 2018-2024 Service Manual / Engine Electrical System / Ignition System / Ignition Coil

Description and operation
Description
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.
Troubleshooting
Troubleshooting
Connector assembly status test
1.
Remove the ignition coil connectors (A) and reinstall it.
Test for changing position of each ignition coil
A : Ignition coil w/ misfire code
B : Ignition coil w/o misfire code
  
•
Do not move with spark plug at the same time (move the ignition coil only)

Specifications
Specification
Item
Specification
Rated Voltage (V)
 13.5V
Secondary Coil [Engine 1000RPM standard]
Input voltage (V)
13.5V
Dwell Time (ms)
5.91
Spark current (mA)
More than 133
Spark duration time (ms)
More than 1.67
Igniter voltage (V)
600 - 680
Pin
4

Item
Specification
Engine Speed (RPM)
 1000
 2000
 3000
 4000
 5000
 6000
 7000
Dwell Time (ms)
 5.91
 5.22
 4.45
 3.99
 3.64
 3.35
 3.15
Secondary Coil Voltage (kV)
 44
 44
 44
 43
 41
 40
 39

Schematic diagrams
Circuit Diagram

Ignition Coil Connector Terminal Function
Connector View

Ignition Coil Terminal Function
Ignition Coil #1 (Cylinder #1)
Pin No
Description
Connected to
1
 Battery Power (B+)
 Main Relay
2
 Ignition Coil #1 Control
 ECM Connector [A] (48)
3
 -
 　
4
 Ground
 Chassic

Ignition Coil #2 (Cylinder #2)
Pin No
Description
Connected to
1
 Battery Power (B+)
 Main Relay
2
 Ignition Coil #2 Control
 ECM Connector [A] (68)
3
 -
 　
4
 Ground
 Chassic

Ignition Coil #3 (Cylinder #3)
Pin No
Description
Connected to
1
 Battery Power (B+)
 Main Relay
2
 Ignition Coil #3 Control
 ECM Connector[A] (26)
3
 -
 　
4
 Ground
 Chassic

Ignition Coil #4 (Cylinder #4)
Pin No
Description
Connected to
1
 Battery Power (B+)
 Main Relay
2
 Ignition Coil #4 Control
 ECM Connector [A] (90)
3
 -
 　
4
 Ground
 Chassic

Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the battery (-) terminal.
2.
Remove the engine cover.
(Refer to Engine Mechanical System - "Engine Cover")
3.
Remove the ignition coil connectors (A).

  
•
When removing the ignition coil connector, pull the lock pin (A) and push the clip.

4.
Remove the ignition coils (A).
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 Ib-ft)

Installation
1.
Install in the reverse order of removal.

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