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: Specifications

Specifications DescriptionSpecificationsLimitGeneralTypeIn-line, DOHC?Number of cylinders4?Bore77mm (3.0315in)?Stroke85.44mm (3.3638in)?Total displacement1,591 cc (97.09 cu.in)?Compression ratio9.5 : 1?Firing order1-3-4-2?Valve timingIntake valveOpensATDC 8°/BTDC 42°?ClosesABDC 69°/ABDC 19°?Exhaust valveOpensBBDC 40°/BBDC 0°?ClosesATDC 3°/ATDC 43°?Cylinder headFlatness of gasket surfaceLess than 0...

Hyundai Sonata LF 2014-2019 Service Manual: Lane Departure Warning System (LDWS) Unit Repair procedures