DTC B278C: Lost Communication with Power Source Control: Procedure
- CLEAR DTC
- Clear the DTCs. Refer to DTC CHECK / CLEAR .
NEXT: Go to next step
- CHECK FOR DTC
- Check for DTCs. Refer to DTC CHECK / CLEAR
.
OK
DTC B278C is not output.
NG → See step 3
OK → See step 4
- Check for DTCs. Refer to DTC CHECK / CLEAR
.
- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL .
- USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .