Hyundai Ioniq: Ignition System / Description and operation

Hyundai Ioniq (AE) 2017-2025 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 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.

Ignition System

Repair procedures

On-vehicle InspectionSpark test1.Check for DTCs. • If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC...

Other information:

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Dual clutch transmission shift indicator

Hyundai Ioniq (AE) 2017-2025 Service Manual: Repair procedures

Removal1.Disconnect the negative (-) battery terminal.2.Remove the glove box.(Refer to Body - "Glove Box Upper Cover Assembly")3.Remove the smart key unit.(Refer to Body - "Smart Key Unit")4.Disconnect the body control module connectors (B).5.Remove the body control module (A) after loosening the mounting nuts...