Hyundai Veloster: Description and Operation

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 Inspection Spark Test 1. Remove the engine cover (A). 2. Disconnect the ignition coil connectors (A). ...

See also:

Heated Oxygen Sensor (HO2S). Troubleshooting
Signal Waveform ...

Air bag - advanced supplemental restraint system
(1) Driver’s front air bag (2) Passenger’s front air bag (3) Side impact air bag (4) Curtain air bag WARNING Even in vehicles with air bags, you and your passengers must always wear the se ...

Rail Pressure Sensor (RPS). Repair procedures
Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the RPS at idle and various engine speed. ...