• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
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.
GDO operation is dependent on the position of the valet switch, if equipped. If the vehicle is equipped with a valet switch, verify it is not in valet mode before continuing with the diagnostics.
Garage Door Opener Description and Operation
Control Module References for scan tool information
J 41540 Universal Home Remote Tester
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
⇒ | If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. |
⇒ | If one or more of the buttons does not respond when each button is pressed, replace the GDO. |
⇒ | If the device is not learned, a possible rolling code or incompatibility with the GDO receiver will prevent programming. Contact 1-800-355-3515. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for GDO replacement, setup, and programming