Hyundai Sonata LF: Ignition System / Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Engine Electrical System / Ignition System / 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 pre-pro grammed 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.

    Ignition System

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    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...

    Other information:

    Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location


    C..

    Hyundai Sonata LF 2014-2019 Service Manual: Front Impact Sensor (FIS) Repair procedures


    Removal     • Removal of the airbag must be performed according to the precautions/ procedures described previously. • Before disconnecting the front impact sensor connector, disconnect the front airbag connector(s). • Do not turn the ignition switch ON and do not connect the battery cable while replacing the front impact sensor...

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