For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Radio/Audio System Schematics DEFINITION: This table is used for vehicles equipped with a radio amplifier.
1 | Did you perform the Radio/Audio System Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Radio/Audio System
2 |

1. Turn ON the ignition, with the engine OFF.
2. Turn ON the radio.
3. Adjust the fade and balance controls to mid range.
4. Insert the tape or CD from the J 39916-A .

Can audio distortion be heard from any speaker?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

3 | Test the appropriate radio speaker output circuits between the radio and the radio amplifier 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 6 | Go to Step 4
4 | Inspect for poor connections at the harness connector of the appropriate speaker. 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 6 | Go to Step 5
5 | Replace the speaker. Refer to Radio Rear Speaker Replacement , Radio Front Side Door Lower Speaker Replacement , or Front Upper Speaker Replacement . Did you complete the replacement? | Go to Step 6 | --
6 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2