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HFL-Navigation Microphone Inputs and Outputs

WARNING: This page is about a different car, the 2011 Honda CR-V and 2010 Honda CR-V. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: HFL-Navigation Microphone 3P Connector Terminal Layout
G06612826Courtesy of AMERICAN HONDA MOTOR CO., INC.

HFL-Navigation Microphone 3P Connector 

HFL-NAVIGATION MICROPHONE 3P CONNECTOR TERMINALS REFERENCE CHART

Terminal Number Wire Color Terminal Name Description Voltage (about) Symptom
1 GRN MIC+ (HFL, navigation mic signal positive) Microphone output signal positive 8V If open: microphone signal shown as red in diagnostics: Functional Setup Mic Level.
If short to ground: Microphone signal shown as red in diagnostic screens: Functional Setup Mic Level.
2 RED MIC-(HFL, navigation mic signal negative) Ground for microphone signal 0 V If open: microphone signal shown as red in diagnostics: Functional Setup Mic Level.
If short to ground: No effect on voice recognition.