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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 240 (Engine Controls And Fuel - 2.0L (LSY) - Diagnostic Information And Procedures (1 Of 3)) >> Diagnostic Information and Procedures >> DTC P0090-P0092, P00C9, P00CA, P10E8, or P163A >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector: G18 Fuel Pump - High Pressure
  3. Test for 1.09 to 1.6 ohms between the test points: Control terminal 1 & Control terminal 2
    • If not between 1.09 and 1.6 ohms 

      Replace the component: G18 Fuel Pump - High Pressure

    • Go to next step: If between 1.09 and 1.6 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 Fuel Pump - High Pressure

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