1. Turn the ignition switch to the ON position.
2. Install the scan tool.
3. Establish communication with the radio.

Does the scan tool communicate with the radio?

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Go to Step 3

Go to Step 2

Go to Body Control System for diagnosis of the Class 2 data line.

Is the repair procedure complete?

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System OK

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Are there any DTCs present?

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Go to Step 4

Go to Step 5

1. Go to the DTC List for a listing of all DTCs that the radio may set.
2. The DTC List is an identification for all possible codes that the radio may set.

Is the repair procedure complete?

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System OK

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1. Remove the scan tool.
2. Turn ON the radio.
3. Insert a tape into the tape player (if equipped).

Does the tape player operate properly?

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Go to Step 6

Go to Tape Player Inoperative for diagnosis.

1. Remove the tape from the tape player.
2. Operate all of the radio controls including the volume control, channel selector, fader, bass and treble.
3. Operate the steering wheel radio controls.

Do all of the radio controls and the steering wheel radio controls operate properly?

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Go to Step 8

Go to Step 7

If the radio controls are inoperative, go to Radio Controls Inoperative for diagnosis.

Is the repair procedure complete?

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System OK

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Insert a compact disk into the compact disk player (if equipped).

Does the compact disk player operate properly?

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Go to Step 10

Go to Step 9

1. If the compact disk player is inoperative, go to Compact Disc Inoperative for diagnosis.
2. If the compact disk player skips, go to Compact Disc General Diagnosis for diagnosis.

Is the repair procedure complete?

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System OK

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1. Remove the compact disk from the compact disk player.
2. Tune the radio in to any AM or FM station.
3. Verify that all of the speakers and the radio display operate properly.

Do all of the speakers and the radio display operate properly?

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Go to Step 12

Go to Step 11

1. If one or more speakers are inoperative, go to One or More Speakers are Inoperative for diagnosis.
2. If one or more speakers are inoperative with the Bose System, go to One or More Speakers Inoperative (Bose System) for diagnosis.
3. If the radio display is inoperative and the speakers operate properly, go to Radio Display Inoperative, Speakers Operative for diagnosis.
4. If the radio display and the speakers are inoperative, go to Radio Display and Speakers Inoperative for diagnosis.

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1. Tune the radio in to any AM or FM station.
2. Insert and play a tape in the tape player.
3. Insert and play a CD in the CD player.
4. Listen to the speakers for any type of noises.

Is there any type of noises present?

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Go to Step 13

System OK

1. If there is noise present that is due to poor reception, go to Radio Poor Reception for diagnosis.
2. If there is accessory noise present, go to Speaker Noise - Accessory for diagnosis.
3. If there is general radio noise present, go to Speaker Noise - General for diagnosis.
4. If there is speaker noise present at any speaker, go to Speaker Noise - Accessory for diagnosis.

Is the repair procedure complete?

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System OK

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