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.
3. Manually operate all functions of the radio, including station seek and scan, and all tone controls.

• | Radio display is on (displays clock or radio information).

• | Radio turns on.

• | All speakers are working.

• | All radio controls operate normally.

• | Display dims with instrument panel dimmer switch.

• | Radio Display Inoperative, No Sound from Speakers

• | Radio Display and/or Buttons Do Not Illuminate

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

• | Speakers Inoperative - One or More

2 | When the radio, tape player, or CD player is in the radio mode. | The local radio stations come in properly. | Radio Poor Reception
3 | Insert a known good cassette tape into the cassette player. | Cassette plays and sound is heard from the speakers. |

• | Tape Player Inoperative

• | Tape Player Weak, Slow, or Garbled Output

4 | Insert a known good CD into the CD Player. | CD plays and sound is heard from the speakers | Compact Disc Inoperative
5 | When the radio, tape player, or CD player is in operation. |

• | All speakers are heard.

• | All speakers operate clearly.

• | Speakers General Diagnosis

• | Speakers Inoperative - One or More