Noise Compensated Volume Inoperative
| Step | Action | Value | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Radio/Audio System Schematics | ||||
| 1 | Did you perform the Entertainment System Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Entertainment System | |
| 2 | Turn ON the ignition, with the engine ON. Turn ON the blower motor on the maximum speed. Cycle the auto volume control ON and then OFF. Is a difference in volume heard? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | |
| 3 | Turn ON the ignition, with the engine OFF. Disconnect the noise compensation microphone. Measure the voltage from the noise compensation microphone supply voltage circuit to the drain wire. Does the voltage measure near the specified value? | 8 V | Go to Step 4 | Go to Step 5 |
| 4 | Replace the noise compensation microphone. 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 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 | |
Noise Compensated Volume Inoperative