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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connectors at both left and right DVD display seat headrests.
  2. Ignition OFF, scan tool disconnected, open driver door, wait two minutes. Test for less than 1 Ω between the infrared remote signal (-) circuits terminal 13 and ground.
    • If greater than the specified range, test the signal (-) circuit for an open/high resistance. If the circuits test normal, replace the A11 radio.
  3. Ignition ON, DVD playing, test for 1-4 V between the infrared remote signal (+) circuit terminal 12 and ground.
    • If less than specified range, test the signal (+) circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the A11 radio.
    • If greater than specified range, test the signal (+) circuit for a short to voltage. If the circuit tests normal, replace the A11 radio.
  4. If all circuits test normal, replace the remote control. If the remote is still inoperative, replace the DVD display seat headrest.
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