Engine Electrical System

Ignition Coil

3steps
~18min
2/5difficulty
0102030405011.89N·mlb·ft
Tightening torque found on this page
Done 0 of 3

Specifications

Specification

Item Specification
Rated Voltage (V) 12
Operating Voltage (V) 5 - 16

Item Specification
Engine Speed (rpm) 1000 2000 MY 3000 4000 5000 6000
Delay time (ms) 3,82 2,61 2,27 1,93 1,79 1,6
Secondary Winding Voltage (kV) 32 ↑ 32 ↑ 31 ↑ 30 ↑ 29 ↑ 27 ↑

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

Repair Procedures

Removal

  1. Disconnect the negative battery cable.

  2. Remove the engine cover.

  3. Remove the ignition coil (A) after loosening the mounting bolts.

    Ignition coil mounting bolt:

    9,8–11.8 N·m

Installation

  1. Install in the reverse order of removal.

Inspection

  1. Measure the primary winding resistance between terminals 1 and 2.

    Specification: 0.74 Ω ± 10% 20 °C

Test yourself

A quick Kia Rio YB quiz: every answer comes with an explanation and a link to the manual page.