HandsFreeLink Control Unit Inputs and Outputs
WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
When replacing an HandsFreeLink control unit connector, match the wires to the cavities listed in the following table.
Courtesy of AMERICAN HONDA MOTOR CO., INC. TERMINAL DESCRIPTION
| Cavity |
Wire |
Terminal Name |
Description |
| 1 |
BLK |
GND |
Ground for HandsFreeLink control unit (G503, G601) |
| 2 |
ORN |
HFL STRG SW |
HFL switch input |
| 3 |
RED |
HFL MUTE |
HFL muting signal output |
| 8 |
GRN |
HFL COMM4 |
Communication signal for AcuraLink control unit (XM receiver) |
| BLK |
Communication signal for Navigation unit |
| 9 |
BLK |
HFL COMM3 |
Communication signal for AcuraLink control unit (XM receiver) |
| WHT |
Communication signal for Navigation unit |
| 11 |
GRN |
TELM SIG+ |
HFL output signal positive |
| 12 |
GRY |
MIC SIG SH |
Shielding for terminal No. 13, 14 |
| 13 |
RED |
MIC SIG+ |
Microphone input signal positive |
| 14 |
GRN |
MIC SIG- |
Microphone input signal negative |
| 15 |
GRY/BLU |
+B |
Continuous power source |
| 16 |
YEL/RED |
ACC |
Power source for accessories |
| 19 |
WHT |
B-CAN |
B-CAN bus communication signal |
| 22 |
RED |
HFL COMM1 |
Communication signal for Navigation unit or AcuraLink control unit (XM receiver) |
| 23 |
WHT |
HFL COMM2 |
Communication signal for AcuraLink control unit (XM receiver) |
| GRN |
Communication signal for Navigation unit |
| 24 |
GRY |
HFL COMM SH |
Shield for terminal No. 8, 9, 22, 23 |
| 25 |
RED |
TELM SIG- |
HFL output signal negative |
| 26 |
GRY |
MIC OUT SH |
Shield for terminal No. 27, 28 |
| 27 |
BRN |
MIC OUT+ |
Microphone output signal positive |
| 28 |
YEL |
MIC OUT- |
Microphone output signal negative |