For 1990-2009 cars

Step | Action | Normal Result(s) | Abnormal Result(s)*
--- | --- | --- | ---
1 |

1. Turn the ignition switch to the RUN position.
2. Turn the radio on.

• | The radio is on.

• | All of the speakers are operating correctly.

• | Radio Display Inoperative, No Sound from Speakers

• | Speakers Inoperative - One or More

• | Radio Display and/or Buttons Do Not Illuminate

• | Radio Displays LOC, LOCKED, or CODE

• | Radio Poor Reception

2 | Turn the headlamp switch to the PARK position. |

• | The radio display dims.

• | The radio face illuminates.

• | The radio buttons illuminate.

• | Radio Illumination Inoperative with Park Lamps On

• | Radio Display Does Not Dim with Instrument Panel Dimmer Switch

3 | Insert a test compact disc or cassette tape into the radio and/or remote CD changer. | The remote CD changer or cassette tape player functions normally. |

• | Remote Playback Device Inoperative

• | Compact Disc Inoperative

• | Tape Player Inoperative

• | Speakers Inoperative - One Side w/Remote CD Player

4 | Operate the radio from the radio control switches on the steering wheel. | The radio functions normally. | Steering Wheel Control System Check
* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.