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Home >> Lexus >> 2013 >> ES 350 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Lin Communication System (Diagnostic Codes) >> Lin Communication System >> DTC B278C: Lost Communication with Power Source Control >> Procedure

DTC B278C: Lost Communication with Power Source Control: Procedure

  1. CLEAR DTC 
    1. Clear the DTCs. Refer to DTC CHECK / CLEAR [06/2012 - ] .

    NEXT: Go to next step 

  2. CHECK FOR DTC 
    1. Check for DTCs. Refer to DTC CHECK / CLEAR [06/2012 - ] .

      OK

      DTC B278C is not output.

    NG → See step   3 

    OK → See step   4 

  3. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [06/2012 - ] 
  4. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]