Hyundai Sonata: 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 ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: DCT Control Module (TCM) Repair procedures
Inspection Transmission Control Module (TCM) Inspection Procedure 1. Inspecting TCM ground circuit: Measure the resistance between the TCM and chassis ground. (Check the terminal connected to the chassis ground while using the back of the harness connector as the base point for TCM.) ...

Hyundai Sonata LF 2014-2019 Service Manual: Ambient Temperature Sensor (ATS) Description and Operation
Description Ambient Temperature Sensor (ATS) is installed on the front-end module and senses the ambient temperature. ECM receives not only the intake air temperatue but also the ambient air temperature informations at the same time to control the intake air quantity precisely provided th ...

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