Kia Optima: Ignition System / Ignition Coil
Description and operation
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.
Specifications
Item
|
Specification
|
Primary Coil Resistance (Ω)
|
0.75 ± 15% [20°C (68°F)]
|
Secondary Coil Resistance (kΩ)
|
5.9 ± 15% [20°C (68°F)]
|
Schematic diagrams
Repair procedures
| 1. |
Disconnect the negative battery (-) terminal.
|
| 2. |
Remove the engine cover.
|
| 3. |
Disconnect the ignition coil connector (A).
| •
|
When removing the ignition coil connector, pull the lock
pin (A) and push the clip (B).
|
|
|
| 4. |
Remove the ignition coil (A).
|
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 Ib-ft)
|
|
| 1. |
Install in the reverse order of removal.
|
| 1. |
Measure the primary coil resistance between terminals 1 and 2.
|
Standard value : 0.75Ω ± 15%
|
|
Description and operation
Description
Ignition timing is controlled by the electronic control ignition timing system.
The standard reference ignition timing data for the engine operat ...
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 th ...
Other information:
Description and operation
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The photo sensor is located at the center of the defrost nozzles.
The photo sensor contains a photovoltaic (sensitive to sunlight) diode. The solar
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in propor ...
Repair procedures
Removal and Installation
1.
Disconnect the oil pressure switch connector (A) and then remove the
oil pressure switch (B).
Tightening torque :
9.8 - 11.8 N•m (1.0 - 1.2 kgf•m, 7.2 - 8.7 lb•ft)
...
Ignition System
Spark Plug