Astra J
DTC P0089Diagnostic Instructions
DTC DescriptorsDTC P0089 51: Fuel Pressure Regulator PerformanceDTC P0089 52: Fuel Pressure Regulator Performance DTC P0089 54: Fuel Pressure Regulator Performance DTC P0089 57: Fuel Pressure Regulator Performance Circuit/System DescriptionThe engine control module (ECM) uses commanded fuel pump flow to determine a desired fuel rail pressure. The ECM monitors fuel rail pressure with the fuel rail pressure sensor. The Fuel Pressure Regulator Solenoid 1 and Fuel Pressure Regulator Solenoid 2 are used to control the fuel pressure at the fuel rail. The Fuel Pressure Regulator Solenoid 1 and Fuel Pressure Regulator Solenoid 2 are pulse width modulated (PWM). The ECM supplies the voltage directly to the Fuel Pressure Regulator Solenoid 1 and Fuel Pressure Regulator Solenoid 2. The ECM controls the solenoid by grounding the control circuit with a solid state device called a driver. Conditions for Running the DTC
Conditions for Setting the DTCP0089 51The ECM detects that the fuel rail pressure is above the maximum threshold. P0089 52The ECM detects that the fuel rail pressure is below the minimum threshold. P0089 54The ECM detects an overtemperature at the power stage of the fuel pressure regulator 2. P0089 57The engine start delayed due to faulty fuel pressure regulator 2 Action Taken When the DTC SetsDTCs P0089 are Type C DTCs. Conditions for Clearing the DTCDTCs P0089 are Type C DTCs. Diagnostic Aids
Reference InformationSchematic ReferenceConnector End View ReferenceDescription and OperationElectrical Information ReferenceDTC Type ReferencePowertrain Diagnostic Trouble Code (DTC) Type Definitions Scan Tool ReferenceControl Module References for scan tool information Special ToolsEN 34730-1A Fuel Pressure Gauge For equivalent regional tools, refer to Special Tools . Circuit/System Verification
If any other DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis. Circuit/System Testing
If the fuel pump does not turn ON, refer to Fuel Pump Electrical Circuit Diagnosis for further diagnosis. If not within the specified range, refer to Fuel System Diagnosis for further diagnosis. If the test lamp does not illuminate, repair the ignition voltage circuit for a short to ground or an open/high resistance. If less than the specified range, test the control circuit for an open or a short to ground. If circuit tests normal, replace the K20 Engine Control Module. If greater than the specified range, test the control circuit for a short to voltage. If circuit tests normal, replace the K20 Engine Control Module. If the test lamp does not illuminate, repair the ignition voltage circuit for a short to ground or an open/high resistance. If less than the specified range, test the control circuit for an open or a short to ground. If circuit tests normal, replace the K20 Engine Control Module. If greater than the specified range, test the control circuit for a short to voltage. If circuit tests normal, replace the K20 Engine Control Module. Low Pressure
High Pressure
Repair InstructionsPerform the Diagnostic Repair Verification after completing the diagnostic procedure.
|
||||||||||||||||||||||||||||||||||||||