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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Engine Controls And Fuel - 2.4L - DTC P0010 To DTC P0114 (LUK)) >> Diagnostic Information and Procedures >> DTC P0089, P00C6, P228C, or P228D: Fuel Pressure Regulator (LUK) >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
  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 0Ω in order to prevent misdiagnosis.

  3. Test for 9-11Ω at 25°C (77°F) between the high control circuit terminal 2 and the low control circuit terminal 1.
    • If not between 9-11Ω  

      Replace the G18 High Pressure Fuel Pump.

    • If between 9-11Ω 
  4. Test for infinite resistance between each terminal and the G18 High Pressure Fuel Pump housing.
    • If less than infinite resistance 

      Replace the G18 High Pressure Fuel Pump.

    • If infinite resistance 
  5. All OK