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Home >> GMC >> 2018 >> Acadia SL >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Cellular, Entertainment, And Navigation System >> Diagnostic Information And Procedures >> DTC B127E: Front Video Display Output Signal (IO5/IO6) >> Circuit/System Verification

Circuit/System Verification

  1. Vehicle OFF/Ignition OFF.
  2. Verify the LVDS interface cable is properly connected at the P17 Info Display Module, K188 Human Machine Interface Control Module Bypass Module, and the K74 Human Machine Interface Control Module and there is no damage to the cable or connections.
  3. Ignition ON/Vehicle in Service Mode, infotainment system ON.
  4. Verify the P17 Info Display Module does display an infotainment image.
    • Go to next step: If the P17 Info Display Module displays an infotainment image. 

      All OK.

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