Kia Rio: Ignition System / Ignition Coil

Kia Rio 2017-2020 YB Service Manual / Engine Electrical System / Ignition System / Ignition Coil

Specifications
Specification

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

Item
Specification
Engine Speed (RPM)
1000
2000
3000
4000
5000
6000
Dwell Time (ms)
3.82
2.61
2.27
1.93
1.79
1.6
Secondary Coil Voltage (kV)
32 ↑
32 ↑
31 ↑
30 ↑
29 ↑
27 ↑

Description and operation
Description

An ignition coil is an induction coil in an engine's ignition system which transforms the battery's low voltage to the high voltage needed to create an electric spark in the spark plugs to ignite the fuel. Coils have an internal resistor while others rely on a resistor wire or an external resistor to limit the current flowing into the coil from the battery 12 V supply.

Schematic diagrams
Circuit Diagram

Connector View

Repair procedures
Removal
1.

Disconnect the battery nagative terminal.

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 (1.0 - 1.2 kgf·m, 7.2 - 8.7 Ib·ft)

  

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

Installation
1.

Install in the reverse order of removal.

Inspection
1.

Measure the primary coil resistance between terminal 1 and 2.

Standard value: 0.74Ω ± 10% [20°C (68°F)]

Ignition System
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Spark Plug
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