Kia Forte: Engine Control System / Rail Pressure Sensor (RPS)

Kia Forte 2019-2020 (BD) Service Manual / Engine Control / Fuel System / Engine Control System / Rail Pressure Sensor (RPS)

Specifications
Specification

Description and operation
Description

Rail Pressure Sensor (RPS) is installed on the delivery pipe and 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 adjusts the fuel pressure with the fuel pressure regulator valve if the target pressure and the actual pressure calculated by the RPS output signal are different.

Schematic diagrams
Circuit Diagram

Harness Connector

Repair procedures
Inspection
1.

Connect the KDS on the Data Link Connector (DLC).

2.

Measure the output voltage of the RPS at idle and various engine speed.

Removal & Installation
1.

Release the residual pressure in fuel line.

(Refer to Fuel Delivery System - “Release Residual Pressure in Fuel Line”)

2.

Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

3.

Remove the intake manifold.

(Refer to Engine Mechanical System - “Intake Manifold")

4.

Remove the injector foam (A).

5.

Disconnect the rail pressure sensor connector (A), and then remove the sensor (B) from the delivery pipe.

Rail Pressure Sensor:

30.0 - 35.0 N·m (3.0 - 3.6 kgf·m, 22.1 - 25.8 lb·ft)

6.

Install in the reverse order of removal.

  

Install the component with the specified torques.

Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.

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Other information:

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