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Home >> Buick >> 2018 >> Enclave Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Video Entertainment System Malfunction >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2017 GMC Acadia Limited, 2017 Chevrolet Traverse, and 2017 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the appropriate DVD display.
  2. Test for less than 5.0 Ω between the ground circuit terminal 6 and ground.
    • If greater than specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, DVD playing, test for B+ between the entertainment remote enable B+ circuit terminal 8 and ground.
    • If less than specified range, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
  4. Test for B+ between the battery positive voltage circuit terminal 7 and ground.
    • If less than specified range, test the voltage supply circuit for a short to ground or an open/high resistance.
  5. Test for 1 - 8 V between the video bright control circuit terminal 9, and ground.
    • If greater then specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the radio.
    • If less then specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
  6. Test for 40 mV - 3.0 V between the video mode signal circuit terminal 10, and ground.
    • If greater then specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
    • If less then specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
  7. Ignition OFF, disconnect the X3 harness connector at the radio. Test the radio harness connector X3 for infinite resistance between the circuits listed below and ground:
    • DVD video signal (+) terminal 7
    • DVD video signal (-) terminal 15
    • If not the specified value, test the signal circuit for a short to ground.
  8. Test for less than 5 ohms between the DVD display terminal 1 and the radio X3 harness connector terminal 7.
    • If greater than specified range, test the DVD video signal (+) circuit for an open/high resistance.
  9. Test for less than 5 ohms between the DVD display terminal 2 and the radio X3 harness connector terminal 15.
    • If greater than specified range, test the DVD video signal (-) circuit for an open/high resistance.
  10. If all circuits test normal, replace the DVD display.
  11. Ignition ON, DVD playing, verify the DVD display operates normally.
    • If the DVD display does not operate normally, replace the radio.
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