DTC C1A03: Driving Support ECU Internal Logical Error; DTC C1A06: Stop Light Switch Input Circuit [09/2013 - ]: Procedure

CHECK FOR DTC
1. Check for DTCs. Refer to DTC CHECK / CLEAR [09/2013 - ] .
2. Clear the DTCs. Refer to DTC CHECK / CLEAR [09/2013 - ] .
3. Recheck for DTCs. Refer to DTC CHECK / CLEAR [09/2013 - ] .
  OK
  
  DTC C1A03 or C1A06 is not output.
  
  NOTE:
  When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization. Refer to INITIALIZATION [09/2013 - ] . If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored.
NG → See step 2

OK → See step 3
REPLACE DRIVING SUPPORT ECU. Refer to REMOVAL [09/2013 - ]
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2013 - ]