Honda Accord 2008 Manual page 2711

07/11/02 10:07:04 61TA0000_230_0267
HandsFreeLink System
DTC Troubleshooting
DTC B1775: Microphone Input/Output Short
to Power/Open
NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN system
diagnosis test mode A (see page 22-120).
1. Connect the HDS to the DLC.
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to LOCK (0) and then back
to ON (II).
4. Check for DTCs with the HDS.
Is DT C B17 7 5 indicated?
YES − Go to step 5.
−
NO Intermittent failure, the system is OK at this
time.
5. Turn the ignition switch to LOCK (0).
6. Remove the roof console (see page 20-130) and the
driver's dashboard lower cover (see page 20-152).
7. Disconnect the 7P connector from the HFL/
Navigation Microphone and the 28P connector
from the HandsFreeLink control unit.
8. Turn the ignition switch to ON (II).
23-266
9. Measure the voltage between HandsFreeLink
control unit 28P connector terminal No. 13 and
body ground.
HANDSFREELINK CONTROL UNIT 28P CONNECTOR
Wire side of female terminals
Is there voltage?
YES − Replace the faulty harness between the
HandsFreeLink control unit and the HFL/navigation
microphone.
NO − Go to step 10.
10. Turn the ignition switch to LOCK (0).
11. Check for continuity between HandsFreeLink
control unit 28P connector terminal No. 13 and HFL/
navigation microphone 7P connector terminal
No. 3.
HANDSFREELINK CONTROL UNIT 28P CONNECTOR
Wire side of female terminals
MIC ＋ (BRN)
HFL/NAVIGATION MICROPHONE 7P CONNECTOR
Wire side of female terminals
Is there continuity?
−
YES Substitute a known-good HandsFreeLink
control unit, then recheck. If the symptom goes
away, replace the original HandsFreeLink control
unit.
−
NO Replace the faulty harness between the
HandsFreeLink control unit and the HFL/navigation
microphone.
ＴＡ０８ＡＮ７Ｋ７３４０００Ｙ１７７５ＦＡＡＴ００
＋
MIC (YEL)
＋
MIC (YEL)
＊０１
＊０２