B1775

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.

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Check for DTCs with the HDS.

Is DTC B1775 indicated?

YES - Go to step 4.

NO - Intermittent failure, the system is OK at this time.

4. Turn the ignition switch OFF.
5. Remove the roof console and the glove box.
6. Disconnect the 28P connector from the roof console and the 22P connector from the HandsFreeLink control unit.
7. Turn the ignition switch ON (II).




8. Check for voltage between HandsFreeLink control unit the 22P connector terminal No. 9 and body ground.

Is there battery voltage?

YES - Repair a short in the wire between the HandsFreeLink control unit and the roof console.

NO - Go to step 9.

9. Turn the ignition switch OFF.




10. Check for continuity between HandsFreeLink control unit 22P connector terminal No. 9 and roof console 28P connector terminal No. 6.

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 - Repair an open in the wire between the HandsFreeLink control unit and the roof console.