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Home >> Scion >> 2012 >> tC Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Key System (For Entry Function) (Diagnostic Codes & Symptom Tests) >> SMART KEY SYSTEM (for Entry Function) >> DTC B27A1: Open in Driver Side Electrical Antenna Circuit >> Inspection Procedure

Inspection Procedure

NOTE:
  • The smart key system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Refer to HOW TO PROCEED WITH TROUBLESHOOTING . Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly.
  • When using the Techstream with the engine switch off to troubleshoot:

    Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds until communication between the Techstream and vehicle begins.

  • Before replacing the certification ECU (smart key ECU assembly), refer to the smart key system (for Entry Function). Refer to PRECAUTION .
  • After performing repairs, confirm that the DTC does not reoccur by performing the "DTC Output Confirmation Operation".
  • The front door outside handle assembly LH has an antenna coil between the ANT1 and ANT2 terminals.
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