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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 354 (Engine Controls And Fuel - 3.6L (LGX) - DTC P0010 To DTC P0459) >> Diagnostic Information and Procedures >> DTC P0089, P00C6, P228C, or P228D: Fuel Pressure Regulator >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the G18 High Pressure Fuel Pump.
    2. NOTE:

    The DMM and test leads must be calibrated to 0 Ω in order to prevent misdiagnosis.

  2. Test for 9-12 Ω between G18 High Pressure Fuel Pump actuator low control circuit terminal 1 and high control circuit terminal 2.
    • If not within the specified range 

      Replace the G18 High Pressure Fuel Pump.

    • If within the specified range 
  3. Test for infinite resistance between each G18 High Pressure Fuel Pump actuator terminal and the G18 High Pressure Fuel Pump housing/case.
    • If less than infinite 

      Replace the G18 High Pressure Fuel Pump.

    • If infinite 
  4. All OK.
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