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Circuit/System Testing

  1. Ignition OFF, disconnect the X1 harness connector at the X20 Memory Card Receptacle.
  2. Test for less than 10 Ω between the ground circuit terminal 4 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  3. Verify that a test lamp illuminates between the B+ circuit terminal 6 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, remove the test lamp.
    2. Test for less than 2 Ω in the B+ circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
    • If the test lamp illuminates 
  4. Verify the USB cable is properly connected at all components and in-line connections and there is no damage to the cable or connections.
    • If connection problems or cable damage is noted. 

      Perform the appropriate repair or replacement to correct any issues.

    • If no connection problems or cable damage is noted. 
  5. Connect the EL-50334-50  to the memory card receptacle connector X2 and the K157 Video Processing Control Module connector X3.
  6. Ignition ON, surround vision or curb view system ON.
  7. Verify the memory card receptacle operates properly while operating the surround vision or curb view system.
    • If memory card receptacle does not operate properly 
    1. Replace the X20 Memory Card Receptacle.
    2. Verify the memory card receptacle operates properly while operating the surround vision or curb view system.
      • If memory card receptacle does not operate properly 

        Replace the K157 Video Processing Control Module.

      • If memory card receptacle operates properly 

        All OK

    • If memory card receptacle operates properly 
  8. Replace the USB harness.
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