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Home >> Buick >> 2018 >> Regal Base >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Image Display Camera System >> Diagnostic Information and Procedures >> Rear Vision Camera System Malfunction (with UVB) >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF/vehicle OFF, disconnect the coax cable connector at the B87 Rearview Camera, and wait for 5 sec.
  2. Connect appropriate EL-52552 pinout tool to B87 Rearview Camera Harness Connector
  3. Ignition On/Vehicle in Service Mode, test for 7 - 11 V between the harness coax cable center conductor and the ground shield.
    • If the value is within the range of 7 - 11 V 
    1. Replace the B87 Rearview Camera.
    2. Engine Running, parking brake set, transmission in Reverse.
    3. Verify the repair corrected the DTC/symptom.
      • If a DTC or symptom exists

        Replace the A11 Radio.

      • Go to next step: If no DTC or symptom exists

        Go to next step: All OK.

    • Go to next step: If the value is outside range of 7 - 11V 
  4. Ignition OFF/vehicle OFF, disconnect X5 harness coax connector at the A11 Radio and wait for 5 sec.
  5. Connect appropriate EL-52552 pinout tool to B87 Rearview Camera Harness Connector
  6. Ignition On/Vehicle in Service Mode, test for 7 - 11 V at the A11 Radio.
    • If the value is outside of range of 7 - 11 V 

      Test or replace the A11 Radio.

    • Go to next step: If the value is within the range of 7 - 11 V 
  7. Replace the coax cable.
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