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Home >> Buick >> 2020 >> Envision Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Radio Information Display Malfunction (IOR/IOS/IOT) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Vehicle OFF/Ignition OFF.
  2. Verify the LVDS interface cable is properly connected at the P17 Info Display Module X2 and the A11 Radio X3 connections 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 displays an image.
    • If the P17 Info Display Module does not display an image. 

      Replace LVDS interface cable from the P17 Info Display Module X2 to the A11 Radio X3.

    1. Ignition ON/Vehicle in Service Mode, infotainment system ON.
    2. Verify the P17 Info Display Module displays an image.
      • If the P17 Info Display Module does not display an image

        Replace the P17 Info Display Module.

      1. Ignition ON/Vehicle in Service Mode, infotainment system ON.
      2. Verify the P17 Info Display Module displays an image.
        • If the P17 Info Display Module does not display an image.

          Replace A11 Radio.

        • Go to next step: If the P17 Info Display Module displays an image

          Go to next step: All OK.

    • Go to next step: If the P17 Info Display Module displays an image. 
  5. All OK.
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