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:

    AVN Head Unit. Repair procedures
    Removal AVN Head Unit • Take care not to scratch the center fascia panel and related par ...

    Key operations
    (1) Master key (M) Used to start the engine, lock and unlock the doors, lock and unlock the glove box, and open the trunk. (2) Sub key (S) Used only to start the engine and lock and unlock the do ...

    MTS Antenna. Repair procedures
    Removal Roof Antenna (GPS) 1. Remove the rear roof trim. (Refer to the BD group - "Roof trim") 2. Disconnect the GPS (A) ...