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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 125 (Engine Controls And Fuel - 3.6L (LF4) - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC P0201-P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P1248-P124D, P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, or P216F >> 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 - Off
  2. Disconnect the electrical connector: Q17 Fuel Injector
    3. NOTE:

    The component's temperature should be 20 to 25°C (68 to 77°F) while testing.

  3. Test for 1 to 3 ohms between the test points: Control circuit terminal 1 & Control circuit terminal 2
    • If not between 1 and 3 ohms 

      Replace the component: Q17 Fuel Injector

    • Go to next step: If between 1 and 3 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: Q17 Fuel Injector

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