DTC B279C: Theft Deterrent System Presence Detection (FROM 12/2010): Procedure

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC OUTPUT
1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Recheck for DTCs.
  OK
  
  DTC B279C is not output.
NG → See step 3

OK → See step 2
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
REPLACE ECM. Refer to REMOVAL