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Circuit/System Testing

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
  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. 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. 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 good and there is voltage at the fuse. Refer to Power Mode Mismatch .
    • 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 less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the B87 Rearview Camera.
    • If the test lamp illuminates 
  5. Engine running, trunk/liftgate closed, park brake applied, transmission in R.
  6. Verify a test lamp illuminates between the control circuit terminal 3 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF.
    2. Test for infinite resistance between the ignition 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 ignition circuit end to end.
    • 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:
    • A11 Radio signal (+) circuit terminal 15 X1
    • A11 Radio signal (-) circuit terminal 14 X1
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • If less than 1 V 
  9. Ignition OFF.
  10. Test for infinite resistance between the signal circuit terminal listed below and ground:
    • A11 Radio signal (+) circuit terminal 15 X1
    • A11 Radio signal (-) circuit terminal 14 X1
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  11. Test for less than 2 Ω between the A11 Radio signal (+) circuit terminal 15 X1 and the B87 Rearview Camera signal (+) circuit terminal 1
    • If 2 Ω or greater 

      Repair the open/high resistance in the circuit.

    • If less than 2 Ω 
  12. Test for less than 2 Ω between the A11 Radio signal (-) circuit terminal 14 X1 and the B87 Rearview Camera signal (-) circuit terminal 4
    • If 2 Ω or greater 

      Repair the open/high resistance in the circuit.

    • If less than 2 Ω 
  13. Replace the B87 Rearview Camera.
  14. Engine running, trunk/liftgate closed, park brake applied, transmission in R.
  15. Verify a clear rear vision image is displayed on the P17 Info Display Module.
    • If a clear rear vision image is not displayed 

      Replace the A11 Radio.

    • If a clear rear vision image is displayed 
  16. All OK.
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