Hyundai Sonata: 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, and then settle at system voltage.

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.
Specifica ...
Injector. Specifications
Specification
Item
Specification
Coil Resistance (Ω)
1.18 ~ 1.31 [20°C(68°F)]
...
See also:
Exterior care
Exterior general caution
It is very important to follow the label directions when using any chemical cleaner
or polish. Read all warning and caution statements that appear on the label.
Finish mai ...
Recommended cold tire inflation pressures
All tire pressures (including the spare) should be checked when the tires are
cold. “Cold Tires� means the vehicle has not been driven for at least three hours
or driven less than one mile (1. ...
Troubleshooting
Troubleshooting
Symptom
Suspect area
Engine will not start or struggle to start
Vapor hose damaged or disconnected
Engine strugg ...
