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

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: Drive Belt Repair procedures

Removal 1. Disconnect the battery negative terminal. 2. Loosen the alternator tension adjusting bolt (A) to loosen tension. 3. Remove the drive belt (A). Inspection Drive Belt Inspection Visually check the belt for excessive wear, frayed cords etc...

Hyundai Sonata LF 2014-2019 Service Manual: Relay Box (Passenger Compartment) Repair procedures