Diagnosis Procedure
- CHECK DTC PRIORITY
If DTC P0088 is displayed with DTC P0090, first perform the confirmation procedure (trouble diagnosis) for DTC P0090.
Is applicable DTC detected?
YES
Perform diagnosis of applicable. Refer to DTC Description .
NO
GO TO 2.
- CHECK LOW FUEL PRESSURE
Check low fuel pressure. Refer to Work Procedure .
Is inspection result normal?
YES
GO TO 3.
NO
Check low fuel pressure system. Refer to Diagnosis Procedure .
- CHECK HIGH PRESSURE FUEL PUMP
Check high pressure fuel pump. Refer to Component Inspection (High Pressure Fuel Pump) .
Is inspection result normal?
YES
GO TO 4.
NO
Replace error-detected parts.
- CHECK FUEL LEAKAGE
- Start the engine.
- 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.