Engine Electrical System - Ignition System Kia Sedona II

DESCRIPTION

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

The engine operating conditions (speed, load, warm-up condition, etc.) are detected by the various sensors. Based on these sensor signals and the ignition timing data, signals to interrupt the primary current are sent to the ECM. The ignition coil is activated, and timing is controlled.

Scheme 1

Scheme 2

1. Remove the engine cover.
2. Disconnect the ignition coil connector (A). NOTE: When removing the ignition coil connector, pull the lock pin (A) and push the clip (B).
3. Remove the ignition coil (B).
4. Installation is the reverse of removal.

Scheme 3

Scheme 4

Scheme 5

1. Remove the ignition coil connector (A). NOTE: When removing the ignition coil connector, pull the lock pin (A) and push the clip (B).
2. Remove bolt holding down the ignition coil.
3. Remove ignition coil from engine.
4. Using a spark plug socket, remove the spark plug.
5. Attach the spark plug to the ignition coil.
6. Reconnect ignition coil harness connector to ignition coil.
7. Ground the spark plug to the engine.
8. Check if spark occurs while engine is being cranked. NOTE: To prevent fuel being injected from injectors while the engine is being cranked, remove the fuel pump relay (A) from the fuse box. Crank the engine for no more than 5-10 seconds.
9. Continue to inspect other cylinders of suspected `no spark' concerns.
10. Install in the reverse order of testing and removal.

Scheme 6

Scheme 7

1. Remove the ignition coil connector (A). NOTE: When removing the ignition coil connector, pull the lock pin (A) and push the clip (B).
2. Remove the ignition coil (B). Remove bolt holding down the ignition coil. Remove ignition coil from engine.
3. Using a spark plug socket, remove the spark plug. CAUTION: Be careful that no contaminates enter through the spark plug holes.
4. Inspect the electrodes (A) and ceramic insulator (B). INSPECTION OF ELECTRODES INSPECTION OF ELECTRODES Condition Dark deposits White deposits Description Fuel mixture too rich Low air intake Fuel mixture too lean Advanced ignition timing Insufficient plug tightening torque
5. Check the electrode gap (A). Standard : Unleaded: 1.0-1.1 mm (0.0394-0.0433 in.)

Scheme 8

1. Measure the primary coil resistance between terminals (+) and (-). Standard value: 0.62ohms ± 10%