Engine Control System/Fuel System

Injector

~1min read

Description and Operation

Description

Based on information from various sensors, the ECM calculates the amount of fuel to be injected. The fuel injector is a solenoid valve; the injection quantity is controlled by the injection duration. The engine control module (ECM) controls each injector by grounding its control circuit. When the ECM supplies power to the injector by grounding the control circuit, the circuit voltage should be low (theoretically 0 V) and fuel is injected. When the ECM de-energizes the injector by opening the control circuit, the fuel injector closes, and the circuit voltage briefly peaks and then stabilizes at the system voltage.
Hyundai Palisade. Description and operation

Specifications

Specification

Item Specification
Coil Resistance (Ω) 1,30–1,44 [20 °C]
Fuel Pressure
[kPa (bar, kgf/cm2)]
2000 - 1990 MY
(20 - 200, 20.4 - 203)
Operating Voltage (V) 6 - 16
Pin 2

Troubleshooting

Signal Waveform

Hyundai Palisade. Troubleshooting

Circuit Diagrams

Wiring Diagram

Hyundai Palisade. Schematic diagrams
Harness Connector
Hyundai Palisade. Schematic diagrams

Test yourself

A quick Hyundai Palisade quiz: every answer comes with an explanation and a link to the manual page.