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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 137 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC B127E: Front Video Display Output Signal (IO5/IO6 Without MAH/MBC) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 GMC Terrain and 2018 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify no DTCs are present.
    • Go to next step: If no DTCs are present 
  2. Ignition ON, infotainment system ON.
  3. Using a scan tool, access the HMI control functions and select Info Display Test.
    • If the Info Display can not display the test image. 

      Refer to Circuit/System Testing.

    • Go to next step: If the Info Display can display the test image. 
  4. All OK
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