HFT/Navigation Microphone Inputs and Outputs

HFT/Navigation Microphone 7P Connector

Terminal Number
Wire Color
Terminal Name
Description
Voltage (about)
Symptom
1
BLK
GND (Ground) (G501)
Ground for HFT/navigation microphone
0 V
If open: You can not operate voice recognition.
If short to ground: No effect on voice recognition.
2
BRN
MIC− (HFL mic signal negative)
Ground for microphone signal
0 V
If open: Microphone signal shown as red in diagnostics: System Links and Functional Setup Mic Level.
If short to ground: No effect on voice recognition.
3
YEL
MIC+ (HFL mic signal positive)
Microphone output signal positive
8 V
If open: Microphone signal shown as red in diagnostics: System Links and Functional Setup Mic Level.
If short to ground: Microphone signal shown as red in diagnostic screens: System Links and Functional Setup Mic Level.
5
LT GRN
HFT MUTE
HFT MUTE signal
0−5 V
If open: You cannot operate HFT sound.
If short to ground: You cannot operate audio sound.
6
PUR
ACC (Accessory)
Power source for accessory
Battery voltage at ACC (I)
If open: You cannot operate voice control.
If short to ground: Blows fuse No. 18 (7.5 A) in the driver's under-dash fuse/relay box.
7
WHT
+B (+B Power source)
Continuous power source
Battery voltage
If open: You cannot operate HFT and voice control.
If short to ground: Blows fuse No. 15 (10 A) in the under-hood fuse/relay box.