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Home >> Buick >> 2013 >> Encore Leather, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 96 (Object Detection System And Pedestrian Protection System) >> Diagnostic Information and Procedures >> Rear Vision Camera System Malfunction (Trax) >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2016 Chevrolet Trax and 2016 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Circuit/System Verification must be performed before Circuit/System Testing.

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B87 Rearview Camera. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 10 Ω between the ground circuit terminal 5 and ground.
    • If 10 Ω or greater 
    1. 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. Ignition ON.
  4. Verify a test lamp illuminates between the ignition circuit terminal 6 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ignition circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, verify the fuse is OK and there is voltage at the fuse.
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF.
    2. Test for infinite resistance between the ignition circuit and ground.
    • If the test lamp illuminates 
  5. Engine running, park brake applied, transmission in REVERSE.
  6. Verify a test lamp illuminates between the control circuit terminal 3 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF, disconnect the X7 harness connector at the K9 Body Control Module and remove both E5 Backup Lamps.
    2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K9 Body Control Module.
    • If the test lamp illuminates 
  7. Ignition OFF, disconnect the X1 harness connector at the A11 Radio, ignition ON.
  8. Test for less than 1 V between the signal circuit terminal listed below and ground:
    • B87 Rearview Camera signal (+) circuit terminal 7.
    • B87 Rearview Camera signal (-) circuit terminal 8.
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • If less than 1 V 
  9. Test for infinite resistance between the signal circuit terminal listed below and ground:
    • B87 Rearview Camera signal (+) circuit terminal 7.
    • B87 Rearview Camera signal (-) circuit terminal 8.
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  10. Test for less than 2 Ω in the following signal circuits end to end.
    • B87 Rearview Camera signal (+) circuit terminal 1 to A11 Radio X1, terminal 7
    • B87 Rearview Camera signal (-) circuit terminal 4 to A11 Radio X1, terminal 8
    • If 2 Ω or greater 

      Repair the open/high resistance in the appropriate circuit.

    • If less than 2 Ω 
  11. Replace the B87 Rearview Camera.
  12. Engine running, transmission in REVERSE.
  13. Verify a clear rear vision image is displayed on the driver information display.
    • If a clear rear vision image is not displayed 

      Replace the A11 Radio.

    • If a clear rear vision image displayed 
  14. All Ok.
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