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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the appropriate DVD display.
  2. Test for less than 5.0 ohms between the ground circuit terminals listed below and ground.
    • Ground terminal 6
    • Ground terminal 5 (DNU)
    • 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 value, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
  4. Ignition ON, test for B+ between the battery positive voltage circuit terminal 7 and ground.
    • If less than specified value, test the voltage supply circuit for a short to ground or an open/high resistance.
  5. Ignition ON, DVD playing, test for 1-8 volts 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. Ignition ON, DVD playing, test for 40 mV -3.0 volts 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 appropriate harness connector at the radio.
    • Front Display - X3
    • Rear Display (DNU) - X2
  8. Test for less than 5 ohms between the DVD display terminal 1 and the approriate radio harness connector terminal.
    • Front Display -X3 terminal 7
    • Rear Display (DNU) - X2 terminal 4
    • If greater than specified range, test the ground circuit for an open/high resistance.
  9. If all circuits test normal, replace the DVD display.
  10. 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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