Step  | Action  | Value  | Yes  | No  | 
|---|---|---|---|---|
Schematic Reference: Radio/Audio System Schematics  | ||||
1  | Did you perform the Diagnostic System Check - Entertainment System?  | --  | Go to Step 2  | |
2  | 
 Did the test pass?  | --  | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems  | Go to Step 3  | 
3  | 
 Does the voltage measure near the specified value?  | 8 V  | Go to Step 4  | Go to Step 5  | 
4  | Replace the noise compensation microphone. Refer to Radio Volume Compensator Interior Noise Microphone Replacement . Did you complete the replacement?  | --  | Go to Step 9  | --  | 
5  | Test the noise compensation microphone supply voltage circuit for an open or short. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?  | --  | Go to Step 9  | Go to Step 6  | 
6  | Test the drain wire circuit for an open or short. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?  | --  | Go to Step 9  | Go to Step 7  | 
7  | Inspect for poor connections at the amplifier. 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 9  | Go to Step 8  | 
8  | Replace the amplifier. Refer to Radio Speaker Amplifier Replacement . Did you complete the repair?  | --  | Go to Step 9  | --  | 
9  | Operate the system in order to verify the repair. Did you correct the condition?  | --  | System OK  | Go to Step 3  |