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Home >> GMC >> 2020 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P0090-P0092, P00C8, P00C9, or P00CA >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector : G18 High Pressure Fuel Pump
  3. Test for 0.3 to 0.7 ohms between the test points : Control terminal 1 & Control terminal 2
    • If not between 0.3 and 0.7 ohms 

      Replace the component : G18 High Pressure Fuel Pump

    • Go to next step : If between 0.3 and 0.7 ohms 
  4. Test for infinite resistance between the test points : Each terminal of the component & The component's housing
    • If less than infinite resistance 

      Replace the component : G18 High Pressure Fuel Pump

    • Go to next step : If infinite resistance 
  5. All OK.
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