Hyundai Tucson: Rail Pressure Sensor (RPS)
Description
Installed on the delivery pipe, the Rail Pressure Sensor (RPS) measures the instantaneous fuel pressure in the delivery pipe. The sensing element (Semiconductor element) built in the sensor converts the pressure to voltage signal.
By using this signal, the ECM can control correct injection amount and timing and adjust the fuel pressure with the fuel pressure regulator valve if the target pressure is different from the actual pressure calculated by the RPS output signal.
Specification
Circuit Diagram
Harness Connector
Inspection
- Connect the diagnostic tool on the Data Link Connector (DLC).
- Measure the output voltage of the RPS at idle and various engine speed.
Removal
- Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")
- Turn the ignition switch OFF and disconnect the battery negative (-) cable.
- Remove the intake manifold.
(Refer to Engine Mechanical System - "Intake Manifold")
- Disconnect the rail pressure sensor connector and then remove the sensor (A) from the delivery pipe.
Tightening torque : 29.4 - 34.3 N.m (3.0 - 3.5 kgf.m, 10.8 - 15.9 lb-ft)
Installation
- Install the component to the specified torques.
- Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.
- Apply the sealant to the sensor.
- Insert the sensor in the installation hole and be careful not to damage it during installation.
- Install in the reverse order of removal.
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Injector - Description
The GDI injector is similar to a standard injector, but sprays fuel at a much
higher pressure directly
into the combustion chamber and has a swirl disc to get the fuel swirling as it
exits the nozzle. This
aids in atomization of the fuel.
Th
Injector - Replacement
The injector combustion seal should be replaced new one to prevent leakage
after removing the injector.
1. Remove the combustion seal (A) with a wire cutter.
WARNING
Grip the sealing ring carefully, pull it to form a small loop
and t
SEE MORE:
Active Air Flap(AAF)
Remove the front bumper.
(Refer to Body (Interior and Exterior) - "Front Bumper Cover")
Disconnect the active air flap connector (A).
RH
LH
Remove the active air flap (A) after loosening the mounting screws.
RH
Differential gear assembly
Remove the drain plug packing (A) and drain plug (B) to drain the gear
oil.
Loosen the differential side cover mounting bolts.
Widen the gap between the side cover and the case to remove the side
cover (A).
Remo
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual