Hyundai Sonata: Description and Operation - Ignition System - Engine Electrical SystemHyundai Sonata: Description and Operation

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.

    Repair procedures
    On-vehicle Inspection Spark Test 1. Disconnect the ignition coil connectors (A). 2. Remove the ignition coils (A). ...

    See also:

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    Impact sensing door unlock system (if equipped)
    All doors will be automatically unlocked when the impact is delivered to impact sensors while the ignition switch is ON. However, the doors may not be unlocked if mechanical problems occur with th ...