Diagnostic System Check - Radio/Audio System. Buick Century (China) (CNG) 1999

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Body and Accessories 🢒 Entertainment 🢒 Diagnostic System Check - Radio/Audio System

Step

Action

Normal Result(s)

Abnormal Result(s)*

•	The radio is ON.

•	All of the speakers are operating correctly.

•	Radio Display Inoperative, No Sound from Speakers

•	Radio Memory Inoperative

•	Radio Display Inoperative, Speakers Operative

•	or Radio Displays LOC, LOCKED, or CODE

•	Radio Poor Reception

Turn the headlamp switch to the PARK position.

•	The radio display dims.

•	The radio face lights.

•	The radio buttons lights.

Insert a tape into the radio.

The tape functions normally.

Operate the rear radio control switches.

The radio functions normally.

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.