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Home >> Chevrolet >> 2025 >> Traverse Z71 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Image Display Cameras >> Diagnostic Information and Procedures >> Surround Vision Camera System Malfunction (with cameras wired to K124 Image Processing Module) >> Circuit/System Testing

Circuit/System Testing

Circuit/System TestingOne camera image malfunction

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the appropriate electrical connector: @ K124 Image Processing Module
  3. Wait for greater than 5 s.
  4. Connect appropriate EL-52552/EL-52552-50 pinout tool to K124 Image Processing Module
  5. Ignition - On/Vehicle - In Service Mode
  6. Test for 7 to 11 V between the test points: Signal circuit terminal @ K124 Image Processing Module & Ground (component side)
    • If not between 7 and 11 V 

      Replace the component: K124 Image Processing Module

    • Go to next step: If between 7 and 11 V 
  7. Ignition/Vehicle & All vehicle systems - Off
    8. NOTE:

    Before testing the coax cable, check the cable's exterior for being pinched, cut, damaged, or having loose connections at the components, all of which can cause reception issues.

  8. Disconnect the appropriate electrical connector: @ Surround Vision Camera
  9. Locate the appropriate pinout adapter and load test loop adapter from EL-52552/EL-52552-50 FAKRA Cable Adaptor Kit.
  10. Connect the 2 adapters together, measure and record the resistance between the terminals at the pinout adapter.
  11. Disconnect the 2 adapters and connect each one to the appropriate end of the coax cable.
  12. At the pinout adapter test terminals, measure the total resistance of the coax cable loop including the connected load test adapter.
    • If not within 5 Ω of the reading from step 10. 

      Replace the coax cable

    • Go to next step: If within 5 Ω of the reading from step 10. 
  13. Replace the component: Surround Vision Camera
  14. Apply the parking brake.
  15. Engine Running, Transmission in Reverse
  16. Verify the repair corrected the DTC/symptom.
    • If the repair did not correct the DTC/symptom 

      Replace the component: K124 Image Processing Module

    • Go to next step: If the repair corrected the DTC/symptom 
  17. All OK.

All camera images distortedAll Cameras

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector: X1 @ K124 Image Processing Module
  3. Test for less than 10 ohms between the test points: Ground circuit terminal 3 & Ground
    • If 10 ohms or greater 
    1. Disconnect the appropriate ground connection:
    2. Test for less than 2 ohms between the test points: Ground circuit terminal 3 @ Component harness & The other end of the circuit
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 ohms 
  4. Ignition - On/Vehicle - In Service Mode
  5. Verify a test lamp turns On between the test points: Each B+ circuit terminal & Ground
    • If the test lamp does not turn On and the circuit fuse is OK 
    1. Ignition/Vehicle - Off
    2. Test for less than 2 ohms between the test points: Each B+ circuit terminal @ Component harness & Fuse
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Refer to: Power Mode Mismatch
    • If the test lamp does not turn On and the circuit fuse is open 
    1. Ignition/Vehicle - Off
    2. Test for infinite resistance between the test points: Each B+ circuit terminal @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
    • Go to next step: If the test lamp turns On 
  6. Replace the component: K124 Image Processing Module
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