Diagnosis Procedure

WITH CONSULT

1. Start the engine.
2. Check "L/FUEL PRES SEN V" in "DATA MONITOR" mode of "ECM" using CONSULT.

   Monitor item	Condition	Value (Approx.)
   L/FUEL PRES SEN V	Engine speed: idle	3, 000 - 3, 300 mV
   	Engine speed: 3, 000 rpm (no load)

WITHOUT CONSULT

1. Start the engine.
2. Check low fuel pressure sensor signal voltage.

   +		-	Condition	Value (Approx.)
   Low fuel pressure sensor
   Connector	Terminal
   F39	2	Ground	Engine speed: idle	3.0 - 3.3 V
   			Engine speed: 3, 000 rpm (no load)

   Is inspection result normal? 

   YES: GO TO 2.

   NO: Check low fuel pressure system. Refer to "DIAGNOSIS PROCEDURE ".

Check high pressure fuel pump. Refer to "COMPONENT INSPECTION (HIGH PRESSURE FUEL PUMP) ".

Is inspection result normal? 

YES: GO TO 3.

NO: Replace error-detected parts.

1. Start the engine.
2. Visually check that the fuel pump, fuel rail, and fuel piping have no fuel leakage.

   Is inspection result normal? 

   YES: Check that the fuel system has no breakage, bend, and crush. Refer to "INSPECTION ".

   NO: Replace or replace the error-detected parts.