Hyundai Sonata: Engine Control System / Injector Troubleshooting

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System / Engine Control System / Injector Troubleshooting

Signal Waveform

The three waveforms below are taken from the #1 and #4 injectors. The top waveform is from the high side (feed side) of the #1 and #4 injectors, while the middle waveform is from the low side (ground side) of the #1 injector and the bottom waveform is from the low side of the #4 injector.

The middle waveform is the same as the top waveform because there is no ground for the circuit. With no current flowing in the circuit, the #1 injector is not energized and fuel does not flow.

The bottom waveform shows that ground is supplied and there is a voltage drop across the #4 injector. With current flowing in the circuit, the #4 injector is energized and fuel flows.

Injector Specifications

Specification ItemSpecificationCoil Resistance (?)1.5 ± 0.075 [20°C(68°F)] ...

Injector Schematic Diagrams

Circuit Diagram ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: Cruise Control
Cruise Control Operation 1. CRUISE indicator 2. SET indicator The Cruise Control system allows you to drive at speeds above 20 mph (30 km/h) without depressing the accelerator pedal. WARNING Take the following precautions: If the Cruise Control is left on, (CRUISE indicator light in the instrume ...

Hyundai Sonata LF 2014-2019 Service Manual: Interior Body Repair
Interior A * These dimensions indicated in this figure are actual-measurement dimensions. [ Unit : mm (inch) ] Interior B * These dimensions indicated in this figure are actual-measurement dimensions. [ Unit : mm (inch) ] Interior C * These dimensions indicated in this figure are ac ...