DTC C1A01: Driving Support ECU [02/2014 - 11/2016]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [02/2014 - 11/2016]

4. Make sure that the DTC detection conditions are met.

   HINT: 

   If the detection conditions are not met, the system cannot detect the malfunction.

5. Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
6. Check for DTCs.

   Body Electrical > Pre-Collision 2 > Trouble Codes 

   NOTE:

   When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.

   Result

   Result	Proceed to
   DTC C1A01 is not output	A
   DTC C1A01 is output	B

7. Turn the power switch off.

Result:  1

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - 11/2016] 

Result:  2

B 

REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to  COMPONENTS [02/2014 - ]