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Circuit/System Testing

  1. Ignition ON, valet switch OFF, if equipped. Press each button of the GDO one at a time. The LED on the GDO should illuminate with each button pressed.
    • If none of the buttons respond, test the battery positive voltage circuit and the ground circuit for an open/high resistance. If the circuits test normal, replace the GDO.
  2. Ignition ON, hold the 2 outer buttons on the GDO until the LED on the GDO stops flashing. Place the J 41540  adjacent to the GDO and press each button of the GDO one at a time. The tester should indicate when each button is pressed.
    • If the tester indicates that one or more of the buttons does not respond, replace the GDO.
  3. Program the GDO with the customers remote. A possible rolling code or incompatibility with the GDO receiver will prevent programming. Refer to www.homelink.com or 1-800-355-3515.
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