Garage Door Opener Inoperative

Garage Door Opener Inoperative

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview

Circuit/System Description

The garage door opener (GDO) is a transmitter operating between 288 and 399 MHz. The GDO has 3 buttons that may be programmed for individual transmitter/receiver combinations to control up to 3 GDOs, security gates, and lighting systems. Each button represents a transmitter code section of the transmitter, which operates separately from any other button, and may be considered a separate transmitter. Battery voltage is provided to the GDO from the ECM fuse in the underhood fuse block.

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 two outer buttons on the GDO until the LED on the GDO stops flashing. Place the J 41540 Homelink tester 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 Homelink at 1-800-355-3515.

Repair Instructions

Perform the after completing the diagnostic procedure.

Programming and Relearning Programming and Relearning