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Home >> Chevrolet >> 2018 >> Silverado 1500 SSV, 4WD, Part Time T/Case Control, Gas >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Image Display Camera System >> Diagnostic Information And Procedures >> Rear Vision Camera System Malfunction (Chevrolet/GMC With IO5/IO6 With Rear Seat Entertainment) >> Circuit/System Testing >> Circuit/System Testing - B: Info Display Module does not Display Anything

Circuit/System Testing - B: Info Display Module does not Display Anything

  1. Ignition OFF and all vehicle systems OFF. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 10 Ω between the K188 Human Machine Interface Control Module Bypass Module ground circuit terminal 5 X1 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.

    • Go to next step: If less than 10 Ω 
  3. Verify a test lamp illuminates between the B+ circuit terminal 1 X1 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 B+ 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 B+ circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K188 Human Machine Interface Control Module Bypass Module.
    • Go to next step: If the test lamp illuminates 
  4. Ignition ON.
  5. Verify a test lamp illuminates between the ignition circuit terminal 2 X1 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. 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 K188 Human Machine Interface Control Module Bypass Module.
    • Go to next step: If the test lamp illuminates 
  6. Engine running, parking brake applied, transmission in REVERSE.
  7. Verify a test lamp illuminates between the control circuit terminal 9 X1 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the control circuit end to end.
    • Go to next step: If the test lamp illuminates 
  8. Reconnect the K188 Human Machine Interface Control Module Bypass Module.
  9. Ignition OFF, disconnect the P17 Info Display Module connector X3 and the K188 Human Machine Interface Control Module Bypass Module connector X3.
  10. Ignition OFF, connect the EL-50334-15 orange end to the P17 Info Display Module connector X3 and EL-50334-15 B1 end (short end) to the K188 Human Machine Interface Control Module Bypass Module connector X3.
  11. Engine running, parking brake applied, transmission in REVERSE.
  12. Verify the rear view image displays properly.
    • If the image displays properly 

      Replace the USB harness between the P17 Info Display Module connector X3 and the K188 Human Machine Interface Control Module Bypass Module connector X3.

    • Go to next step: If the image does not display properly 
  13. Ignition OFF, disconnect the K74 Human Machine Interface Control Module X5.
  14. Connect the EL-50334-15 B1 end (short end) to the K74 Human Machine Interface Control Module connector X5 and connect the EL-50334-15 orange end to the P17 Info Display Module connector X3.
  15. Engine running, parking brake applied, transmission in REVERSE.
  16. Verify the rear view image displays properly.
    • If rear view image displays properly 

      Replace the K188 Human Machine Interface Control Module Bypass Module.

    • Go to next step: If the rear view image does not display properly 
  17. Replace the P17 Info Display Module.
  18. Engine running, parking brake applied, transmission in REVERSE.
  19. Verify the rear view image displays properly.
    • If rear view image is not displayed 

      Replace the B87 Rearview Camera.

    • Go to next step: If rear view image is displayed 
  20. All OK.
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