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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures >> Diagnostic Information And Procedures >> Radio Information Display Malfunction (IOB) >> Circuit/System Verification

Circuit/System Verification

  1. Verify DTC B127E is not set.
    • Go to next step: If DTC B127E is not set. 
  2. Ignition ON/vehicle in Service Mode, A11 Radio ON.
  3. Verify the P17 Info Display Module turns on and information is shown on the display.
    • If the P17 Info Display Module does not turn on, or information is not shown clearly in the display. 

      Refer to Circuit/System Testing - Blank Screen

    • Go to next step: If the P17 Info Display Module turns on and information is shown on the display. 
  4. Verify the touch screen feature functions by touching a selection on the display.
    • If the display does not respond to the touch screen selection 

      Refer to Circuit/System Testing - Touch Screen

    • Go to next step: If the display responds to the touch screen selection 
  5. All OK.
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