Diagnosis Procedure

WITH CONSULT-III

1. Start the engine.
2. Check "L/FUEL PRES SEN V" in "DATA MONITOR" of "ECM" with CONSULT-III.
   DATA MONITOR ITEM CONDITION
   
   

   Data 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-III

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

   +		-	Condition	Value (Approx.)
   Low fuel pressure sensor
   Connector	Terminal
   F25	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 ".

Perform the high pressure fuel pump component inspection. Refer to "COMPONENT INSPECTION ".

Is inspection result normal? 

YES: GO TO 3.

NO: Replace the fuel pump.

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.

   NO: Repair or Replace the error-detected parts.