Noise Compensated Volume Inoperative

NOISE COMPENSATED VOLUME INOPERATIVE

DIAGNOSTIC INSTRUCTIONS
- Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure
- Review Strategy Based Diagnosis for an overview of the diagnostic approach.
- Diagnostic Procedure Instructions provides an overview of each diagnostic category.

CIRCUIT/SYSTEM TESTING

NOTE: Noise compensated volume only available on vehicles equipped with Y91.

1. Turn the ignition ON, Disconnect the noise compensation microphone.
2. Measure for 7 V to 9 V between the noise compensation microphone supply circuit and the drain circuit.
- If the voltage is in between 9 to 7 V, replace the noise compensation microphone
- If the voltage is greater than 9 V or less than 7 V and a open, short to ground, or short to voltage can not be found, replace the radio.

REPAIR INSTRUCTIONS
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Control Module References for radio replacement, setup, and programming. Programming and Relearning