DTC C1A01: Driving Support ECU: Procedure

CHECK FOR DTC
1. Using the Techstream, enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
2. Clear the DTCs. Refer to DTC CHECK / CLEAR .
3. Check for DTCs. Refer to DTC CHECK / CLEAR .
  OK
  
  DTC C1A01 is not output.
NG → See step 2

OK → See step 3
REPLACE DRIVING SUPPORT ECU. Refer to REMOVAL
CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION). Refer to HOW TO PROCEED WITH TROUBLESHOOTING