Page 819 - Workshop Manual - Tunland (2017)
P. 819

DIAGNOSTICS - ENGINE CONTROL SYSTEM                          04-133

                 P553，P559，P1911-INJECTOR METERING OIL RAIL 1                                                        04

                 PRESSURE SENSOR FAULT
                 P553-FUEL INJECTOR METERING OIL RAIL 1 PRESSURE- DATA

                 IS VALID BUT ABOVE NORMAL OPERATING RANGE - MEDIUM
                 SEVERITY LEVEL
                 P559-FUEL INJECTOR METERING OIL RAIL 1 PRESSURE- DATA

                 IS VALID BUT ABOVE NORMAL OPERATING RANGE - MEDIUM
                 SEVERITY LEVEL

                 P1911-FUEL INJECTOR METERING OIL RAIL 1 PRESSURE- DATA
                 IS VALID BUT ABOVE NORMAL OPERATING RANGE - HIGHEST
                 SEVERITY LEVEL

                 Description

                 1 .    The engine control module (ECM) monitor the operation condition of the engine,
                        including reading the fuel rail pressure, and change the instructions of flow to
                        increase (turn on fuel pump actuator) or decrease (turn off fuel pump actuator)
                        of the high-pressure pump fuel supply.
                 Circuit Diagram
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