Diagnosis Procedure
- CHECK DTC PRIORITY
If DTC P0087 is displayed with DTC P0090, first perform the confirmation procedure for DTC P0090.
Is applicable DTC detected?
YES >>: Perform diagnosis of applicable. DTC DESCRIPTION
NO >>: GO TO 2
- CHECK LOW FUEL PRESSURE
Check low fuel pressure. Refer to Work Procedure WORK FLOW .
Is inspection result normal?
YES >>: GO TO 3
NO >>: Check low fuel pressure system. Refer to Diagnosis Procedure DTC DIAGNOSIS PROCEDURE .
- CHECK HIGH PRESSURE FUEL PUMP
Check high pressure fuel pump. Refer to COMPONENT INSPECTION .
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.