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 HandsFreeLink control unit.
6. Disconnect the 22P connector from the HandsFreeLink control unit.
7. Turn the ignition switch ON (II).




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

Is there battery voltage?

YES - Replace shielded harness.

NO - Go to step 9.

9. Turn the ignition switch OFF.
10. Remove the front individual map light, and disconnect the ambient light 10P connector.




11. Check for continuity between the HandsFreeLink control unit 22P connector terminal No. 9 and ambient light 10P connector terminal No. 7.

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.