Fuel Pressure Sensor (FPS)

Description and Operation

Description

The fuel pressure sensor (FPS) is installed on the top of the low-pressure fuel line and measures the fuel pressure in the low-pressure fuel line. Based on the fuel pressure measured by the FPS and the amount of fuel consumed, the fuel pump control module (FPCM) determines whether to activate the low-pressure fuel pump. After activation, the FPS continues to provide fuel pressure information to the FPCM, and the FPCM continues to control fuel delivery using feedback information from the FPS.

Specifications

Specification

Pressure [kPa (kgf/cm², psi)]	Output voltage (V)
50(0,51, 7,3)	0,3
600 (6,12, 87,0)	2,5
1100 (11,2, 159,5)	4,5

Circuit Diagrams

Wiring Diagram

Terminal Illustration

TERMINAL FUNCTION

No.	Function	Connected To
1	Fuel Pressure Sensor (FPS) Power Supply	Fuel Pump Control Module (FPCM)
2	Fuel pressure sensor (FPS) input signal	Fuel Pump Control Module (FPCM)
3	Fuel pressure sensor (FPS) ground	Fuel Pump Control Module (FPCM)

Repair Procedures

Inspection

1. 1
   Connect the GDS to the Data Link Connector (DLC).
2. 2
   Check the output voltage of the Fuel Pressure Sensor (FPS).

Pressure [kPa (kgf/cm², psi)]	Output voltage (V)
50(0,51, 7,3)	0,3
600 (6,12, 87,0)	2,5
1100 (11,2, 159,5)	4,5

DEPOSIT

1. 1
   Release the residual pressure in the fuel line. (Refer to Fuel System - Repair Procedures - Releasing Residual Pressure in the Fuel Line)
2. 2
   Remove the rear seat. (Refer to Body - Rear Seat)
3. 3
   Remove the fuel pump service cover (A).

   

4. 4
   Disconnect the fuel pressure sensor connector (A).
5. 5
   Remove the fuel pressure sensor mounting pin (B).

   

6. 6
   Remove the fuel pressure sensor from the fuel pump.

REMEDY

1. To install, perform the removal procedure in reverse order.