For 1990-2009 cars

Important: Review the system Description and Operation in order to familiarize yourself with the system functions. Refer to Garage Door Opener Description and Operation .

### Visual/Physical Inspection

• | Turn the ignition key to the ON position and press any garage door opener (GDO) button. The LED should light when the unit has power and is functional.

• | Inspect for aftermarket devices which could affect the operation of the GDO. Refer to Checking Aftermarket Accessories in Wiring Systems.

• | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

### Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

### Symptom List

Refer to Garage Door Opener Inoperative in order to diagnose the symptom.