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Home >> Lexus >> 2012 >> LS 600hL >> Repair and Diagnosis >> External Pages >> Different car >> Section 119 (Lin Communication System (Diagnostic Codes)) >> Lin Communication System >> DTC B278C: Lost Communication with Power Source Control >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2012 Lexus CT 200h. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  • If the certification ECU (smart key ECU assembly) is replaced, register the key. Refer to REGISTRATION .
  • When using the Techstream to troubleshoot with the power switch off:

    Connect the Techstream to the DLC3, and turn the courtesy switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.

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