Hyundai Elantra: Engine Control System / Injector Description and Operation

Description
Based on information from various sensors, the ECM can calculate the fuel amount to be injected. The fuel injector is a solenoid-operated valve and the fuel injection amount is controlled by length of injection time. The ECM controls each injector by grounding the control circuit. When the ECM energizes the injector by grounding the control circuit, the circuit voltage should be low (theoretically 0V) and the fuel is injected. When the ECM de-energizes the injector by opening control circuit, the fuel injector is closed and circuit voltage should momentarily peak.

Fuel Tank Pressure Sensor (FTPS) Repair procedures
Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the FTPS. Specification : Refer to "Specification" Removal 1. Turn the ignition swi ...

Injector Specifications
Specification ItemSpecificationCoil Resistance (?)13.8 ~ 15.2 [20°C(68°F)] ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Immobilizer Control Unit Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the main crash pad assembly. (Refer to Body - "Main Crash Pad Assembly") 3. Discnnect the connector of the immobilizer unit and then remove the immobilizer unit (A) after loosening a nut. Installation 1. Install the ...

Hyundai Elantra AD (2016-2020) Owners Manual: Side air bags
Your vehicle is equipped with a side air bag in each front seat. The purpose of the air bag is to provide the vehicle's driver and the front passenger with additional protection than that offered by the seat belt alone. The side air bags are designed to deploy during certain side impact ...

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