Noise Compensated Volume Inoperative

Noise Compensated Volume Inoperative

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview

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 7-9 volts between the noise compensation microphone supply circuit and the drain circuit.

• If the voltage is in between 9-7 volts, replace the noise compensation microphone

• If the voltage is greater than 9 volts or less than 7 volts 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

* Refer to Programming and Relearning.Programming and Relearning
* Microphone Replacement - Radio Volume Compensator Interior