Note. Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ). If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
- Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS (WITHOUT NAVIGATION)»(ref-513223-S22269729002012110700000) ).
- Clear the DTCs with the HDS.
- Turn the ignition switch to LOCK (0), and then back to ON (II).
- Check for DTCs with the HDS. Is DTC B1792 indicated? YES -Replace the HandsFreeLink control unit (see «CONTROL UNIT INPUT TEST/REPLACEMENT»(ref-513223-S23756587702012110700000) ). NO -Intermittent failure, the system is OK at this time.