Kia Cadenza YG: Ignition System / Repair procedures

Kia Cadenza YG 2016-2021 Service Manual / Engine Electrical System / Ignition System / Repair procedures

On-vehicle Inspection
Inspect ignition coil assembly and Perform spark test
1.
Check for DTCs.
   
•
If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC.
(Refer to DTC guide)
2.
Check if sparks occur.
(1)
Remove the engine cover.
(2)
Remove the ignition coils.
(3)
Using a spark plug wrench, remove the spark plugs.
(4)
Disconnect the 6 injector extention connectors.
(5)
Ground the spark plug to the engine.

(6)
Check if sparks occur at each spark plug while engine is being cranked.
   
•
Do not crank the engine for more then 5 seonds.
3.
If sparks do not occur, perform the following test.

4.
Using a spark plug wrench, install spark plugs.
5.
Install the ignition coils.
6.
Install the engine cover.

    Description Ignition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data for the engine operating conditions are pre-pro grammed in the memory of the ECM (Engine Control Module).

    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.

    Other information:

    Kia Cadenza YG 2016-2021 Service Manual: Components and Components Location

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    Kia Cadenza YG 2016-2021 Service Manual: Photo Sensor Repair procedures

    Inspection 1. Ignition "ON" 2. Using the scan tool. 3. Emit intensive light toward photo sensor using a lamp, and check the output voltage change. 4. The voltage will rise with higher intensive light and reduce with lower intensive light.

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