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Component Testing

WARNING: This page is about a different car, the 2020 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:E7 Rear License Plate Lamp
  3. Test for infinite resistance between the test points:Signal terminal 2 & Ground terminal 1 - Switch - Not Pressed
    • If less than infinite resistance 

      Replace the component:E7 Rear License Plate Lamp

    • Go to next step: If infinite resistance 
  4. Test for less than 3 ohms between the test points:Signal terminal 2 & Ground terminal 1 - Switch - Pressed
    • If 3 ohms or greater 

      Replace the component:E7 Rear License Plate Lamp

    • Go to next step: If less than 3 ohms 
  5. All OK.
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