Unit Inspection

Fuel pressure sensor check

Output voltage check

Measure the voltage between the terminals.

Voltage

Inspection terminals	Inspection conditions	Standard value
2(VOUT) - 1(GND)	Apply 5 V voltage between the terminals 3 (VCC) and 1 (GND).	Approx. 0.5 V

Fig 1: Fuel Pressure Sensor Connector Terminal Identification

Courtesy of SUBARU OF AMERICA, INC.

CAUTION:

Wrong connection of the inspection terminals may damage the fuel pressure sensor. Pay special attention to the connection work.
Do not apply voltage of 6 V or higher between the terminals 3 (VCC) and 1 (GND).

NOTE: If a stabilized power source is not available, use nickel hydride batteries (1.2 V X4) etc.