DTC Troubleshooting Index
WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
HandsFreeLink Control Unit
TROUBLESHOOTING CHART
| DTC | Description | DTC type | Refer To |
|---|---|---|---|
| B1775 | Microphone input/output short to power/open (with navigation) | Signal error | (see DTC TROUBLESHOOTING ) |
| Microphone input/output short to power/open (without navigation) | Signal error | (see DTC B1775: MICROPHONE INPUT/OUTPUT SHORT TO POWER/OPEN (WITHOUT NAVIGATION) ) | |
| B1776 | Microphone input/output short to ground (with navigation) | Signal error | (see DTC B1776: MICROPHONE INPUT/OUTPUT SHORT TO GROUND (WITH NAVIGATION) ) |
| Microphone input/output short to ground (without navigation) | Signal error | (see DTC B1776: MICROPHONE INPUT/OUTPUT SHORT TO GROUND (WITHOUT NAVIGATION) ) | |
| B1779 | HFL switch or voice control switch (PICK-UP/HANG-UP buttons) circuit open/short to power (with navigation) | Signal error | (see DTC B1779: HFL SWITCH OR VOICE CONTROL SWITCH (PICK-UP/HANG-UP BUTTONS) CIRCUIT OPEN/SHORT TO POWER (WITH NAVIGATION) ) |
| HFL switch or voice control switch (HFL TALK/HFL BACK buttons) circuit open/short to power (without navigation) | Signal error | (see DTC B1779: HFL SWITCH OR VOICE CONTROL SWITCH (HFL TALK/HFL BACK BUTTONS) CIRCUIT OPEN/SHORT TO POWER (WITHOUT NAVIGATION) ) | |
| B1780 | HFL switch (PICK-UP/HANG-UP buttons) circuit short | Signal error | (see DTC B1780: HFL SWITCH (PICK-UP/HANG-UP BUTTONS) CIRCUIT SHORT ) |
| B1792 | HandsFreeLink control unit internal error | Internal error | (see DTC B1792: HANDSFREELINK CONTROL UNIT INTERNAL ERROR ) |
| U1280 | Communication bus line error (BUS OFF) | Loss of communication | (see DTC U0199: DRIVER'S MICU LOST COMMUNICATION WITH DOOR MULTIPLEX CONTROL UNIT ) |