Hyundai Tucson: 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 (x)1.5 [20°C(68°F)] ...

Injector Schematic Diagrams
Circuit Diagram (M/T) (A/T) ...

Other information:

Hyundai Tucson (LM) 2010-2015 Service Manual: Variable Intake Solenoid (VIS) Valve Schematic Diagrams
Circuit Diagram (M/T) (A/T) ...

Hyundai Tucson (LM) 2010-2015 Service Manual: Filler-Neck Assembly Repair procedures
Removal 1. Remove the rear-LH wheel, tire, and the inner wheel house. 2. Disconnect the fuel filler hose (A) and the ventilation hose (B). 3. Open the fuel filler door and unfasten the filler-neck assembly mounting screw (A). 4. Remove the filler-neck assembly from the vehicle after ...

© 2010-2020 www.htmanual.net