For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Press any button on the UGDO. Does the LED illuminate? | -- | Go to Garage Door Opener Programming - Universal | Go to Step 2
2 | Inspect the courtesy lamps. Do the courtesy lamps function properly? | -- | Go to Step 3 | Go to Interior Lamps System Check
3 | Inspect the Valet lockout switch. Verify that the lockout switch is in the OFF position. Is the valet lockout switch in the OFF position? | -- | Go to Step 4 | --
4 | Press the rear compartment lid and the fuel door release buttons. Does the rear compartment lid and fuel door release function properly? | -- | Go to Step 5 | Go to Fuel Filler Door Release System Check , Rear Compartment Lid Release System Check , Fuel Filler Door Release Inoperative in Body Rear End
5 | Remove the UGDO from the overhead console. Refer to Garage Door Opener Replacement . Test for battery voltage at connector C1 terminal 1 of UGDO connector to ground (Ensure that the body control module has not timed out.) . Is battery voltage of the specified value present? | 10-14 volts | Go to Step 6 | Go to Step 7
6 | Inspect for ground at connector C1 terminal 3 of UGDO connector. Is a ground present? | -- | Go to Step 9 | Go to Step 8
7 | Inspect for an open or short to ground in CKT 1732 (ORN) from connector C303 terminal C to connector C1 terminal 1 of the UGDO connector. Is the repair compete? | -- | Refer to Garage Door Opener System Check | --
8 | Inspect for open in CKT 1050 (BLK) from connector C303 terminal A to connector C1 terminal 3 of the UGDO connector. Is the repair complete? | -- | Refer to Garage Door Opener System Check | --
9 | Replace the garage door opener. Is the repair complete? | -- | Refer to Garage Door Opener System Check | --