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Home >> Toyota >> 2014 >> Prius Four >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 123 (Lin Communication System (Diagnostic Codes) (Plug-In)) >> Lin Communication System >> DTC B278C: Lost Communication with Power Source Control [10/2013 - ] >> Inspection Procedure
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Inspection Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  • If the certification ECU (smart key ECU assembly) or power management control ECU is replaced, refer to Registration. Refer to REGISTRATION [10/2013 - ] .
  • 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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