Schematic Reference: Radio/Audio System Schematics

1

Did you perform the Radio/Audio System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Radio/Audio System

1. Turn ON the ignition, with the engine OFF.
2. Turn ON the radio.
3. Insert the tape or CD from the J 39916-A Audio System Diagnostic Kit.

Is the volume reduced in one or more speakers?

Go to Step 3

Go to Audio System Troubleshooting Hints

Is the volume reduced in all speakers?

Go to Step 4

Go to Step 5

Compare the volume to a similar vehicle with the same audio system.

Are both vehicles the same?

System OK

Go to Step 6

Test the radio output circuits of the appropriate speaker channel for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 8

Go to Step 6

Inspect for poor connections at the harness connector of the radio. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 8

Go to Step 7

Important: Perform the set up procedure for the radio.

Replace the radio. Refer to Radio Replacement .

Did you complete the replacement?

Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2