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ECK-188 < DTC/CIRCUIT DIAGNOSIS > [K9K] P0089 FUEL PRESSURE Check the correctness of the fuel filter. Is the inspection result normal? YES >> GO TO 4. NO >> Replace fuel filter. 4. CHECK FUEL RAIL PRESSURE SENSOR CONNECTION 1. Turn ignition switch OFF. 2. Check fuel rail pressure sensor harness connector connection. Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace error-detected parts. 5. CHECK HIGH PRESSURE FUEL PUMP HARNESS CONNECTOR CONNECTION Check High pressure fuel pump harness connector connection. Is the inspection result normal? YES >> GO TO 6. NO >> Repair or replace error-detected parts. 6. CHECK ECM HARNESS CONNECTOR CONNECTION Check ECM harness connector connection. YES >> GO TO 7. NO >> Repair or replace ECM harness connector connection. 7. CHECK HIGH PRESSURE FUEL PUMP CIRCUIT FOR OPEN AND SHORT Check high pressure fuel pump circuit for open and short. Is the inspection result normal? YES >> GO TO 8. NO >> Repair or replace error-detected parts. 8. CHECK FUEL FLOW ACTUATOR Check high pressure fuel pump. Refer to ECK-189, "Component Inspection (High Pressure Fuel Pump)" Is the inspection result normal? YES >> GO TO 9. NO >> Replace error-detected parts. 9. CHECK FUEL RAIL PRESSURE SENSOR CIRCUIT FOR OPEN AND SHORT Check fuel rail pressure sensor circuit for open and short. Is the inspection result normal? YES >> GO TO 10. NO >> Repair or replace error-detected parts. + - Continuity ECM High pressure fuel pump Connector Terminal Connector Terminal F80 92 F133 2 Existed + - Continuity ECM Fuel rail pressure sensor Connector Terminal Connector Terminal F80 45 F40 3 Existed 68 2 72 1 |