DTC C1A03: Driving Support ECU Internal Logical Error; DTC C1A06: Stop Light Switch Input Circuit [09/2014 - 10/2015]: Procedure

CHECK FOR DTC
1. Check for DTCs (See page. Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).
2. Clear the DTCs (See page. Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).
3. Recheck for DTCs (See page. Refer to DTC CHECK / CLEAR [09/2014 - 10/2015] ).
  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 (See page. Refer to INITIALIZATION [09/2014 - 10/2015] ). 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.
Result: OK

OK

USE SIMULATION METHOD TO CHECK

(See page. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015] )

Result: NG

NG

REPLACE DRIVING SUPPORT ECU

(See page. Refer to REMOVAL [09/2014 - 10/2015] )