Ignition Coil
Description and Operation
Description
The ignition coil is an induction coil in the engine ignition system that converts the low battery voltage to the high voltage required to produce an electric spark at the spark plugs to ignite the fuel. Some coils have an internal resistor, while others rely on a resistor wire or external resistor to limit the current flowing through the coil from the 12 V battery supply.
Circuit Diagrams
Wiring Diagram
Connector Type
Ignition Coil Terminal Function
Ignition Coil (Cylinder No. 1)
| Pin No. | Description | Connected To |
| 1 | Ground | Chassis |
| 2 | Ignition Coil No. 1 Control Output | Engine Control Module (ECM) Connector A (41) |
| 3 | - | |
| 4 | Battery Power (B+) | Main Relay |
Ignition Coil (Cylinder #2)
| Pin No. | Description | Connected To |
| 1 | Ground | Chassis |
| 2 | Ignition Coil No. 2 Control Output | Engine Control Module (ECM) Connector A (21) |
| 3 | - | |
| 4 | Battery Power (B+) | Main Relay |
Ignition Coil (Cylinder No. 3)
| Pin No. | Description | Connected To |
| 1 | Ground | Chassis |
| 2 | Ignition Coil No. 3 Control Output | Engine Control Module (ECM) Connector A (20) |
| 3 | - | |
| 4 | Battery Power (B+) | Main Relay |
Ignition Coil (Cylinder No. 4)
| Pin No. | Description | Connected To |
| 1 | Ground | Chassis |
| 2 | Ignition Coil No. 4 Control Output | ECM Connector A (42) |
| 3 | - | |
| 4 | Battery Power (B+) | Main Relay |
Repair Procedures
Removal
Turn the ignition switch OFF and disconnect the negative (-) battery terminal.
Remove the engine cover.
(Refer to Engine Mechanical System - Engine Cover)
Disconnect the ignition coil connector (A).
Remove the ignition coil by loosening the mounting bolt (B).
Installation
Install in the reverse order of removal.
Ignition coil mounting bolt:
9,8–11.8 N·m
Test yourself
A quick Kia Stinger CK quiz: every answer comes with an explanation and a link to the manual page.