DTC    P0191    Fuel Rail Pressure Sensor Circuit Range / Performance


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0191, P1229 OR P1272)

CHECK FUEL RECEIVER GAUGE (AMOUNT OF FUEL)

ADD FUEL

BLEED AIR FROM FUEL SYSTEM

CHECK WHETHER DTC OUTPUT RECURS (DTC P0191, P1229 OR P1272)

CLEAR DTC

CHECK ENGINE STARTING CONDITION

BLEED AIR FROM FUEL SYSTEM

CHECK ENGINE STARTING CONDITION

CHECK AND REPLACE FUEL INLET LINE

CHECK ENGINE STARTING CONDITION

REPLACE SUPPLY PUMP ASSEMBLY (SUCTION CONTROL VALVE)

BLEED AIR FROM FUEL SYSTEM

CHECK ENGINE STARTING CONDITION

REPLACE COMMON RAIL ASSEMBLY (PRESSURE CONTROL VALVE)

BLEED AIR FROM FUEL SYSTEM

CHECK FREEZE FRAME DATA (TARGET PUMP SCV CURRENT)

CHECK FREEZE FRAME DATA (FUEL PRESS)

CHECK FREEZE FRAME DATA (INJECTION FEEDBACK VAL #1 TO #4)

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TEST THE FUEL LEAK)

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FUEL CUT FOR IDENTIFYING MALFUNCTION)

REPLACE INJECTOR ASSEMBLY (INJECTOR OF MALFUNCTIONING CYLINDER)

PERFORM REGISTRATION AND INITIALIZATION

BLEED AIR FROM FUEL SYSTEM

REPLACE SUPPLY PUMP ASSEMBLY

BLEED AIR FROM FUEL SYSTEM

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TEST THE FUEL LEAK)

REPLACE COMMON RAIL ASSEMBLY

BLEED AIR FROM FUEL SYSTEM

CHECK HARNESS AND CONNECTOR (SUCTION CONTROL VALVE - ECM)

REPLACE SUPPLY PUMP ASSEMBLY

BLEED AIR FROM FUEL SYSTEM

REPAIR OR REPLACE HARNESS OR CONNECTOR

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED