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...

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    Replacement 1. Remove the fuel pump. (Refer to Fuel Delivery System - "Fuel Pump") 2. Remove the fixing clip (A), and then disconnect the fuel tube (B). 3. Remove the fuel pressure regulator fixing clip (A). 4. Remove the fuel pressure regulator (B) from the fuel filter...

    Hyundai Sonata LF 2014-2019 Service Manual: Fuel Filler Door


    Components and Components Location Component Location 1. Fuel filler door open switch2. Fuel filler door release actuator Fuel Filler Door Release Actuator Repair procedures Inspection 1. Remove the left luggage side trim. (Refer to Body - "Trunk Trim") 2...

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