DTC B1251: Combination Switch Control Unit Internal Error
NOTE:
If you are troubleshooting multiple DTC's, be sure to follow the instructions in B-CAN system diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
).
- Clear the DTCs using the HDS.
- Cycle the ignition switch to OFF, and then back ON.
- Check for DTCs using the HDS.
Is DTC B1251 indicated?
YES -Faulty combination switch control unit; replace the wiper/washer switch.
NO -Intermittent failure, the CPU in the combination switch control unit is OK at this time. Check for loose or poor connections. If the connections are good, check the battery condition (see BATTERY TEST ) and the charging system (see CHARGING SYSTEM INDICATOR CIRCUIT TROUBLESHOOTING ).