DTC C1A0A: Front Radar Sensor Region Code Mismatch [08/2015 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Radar Cruise / Data List.
5. Read the Data List according to the display on the Techstream.
   RADAR CRUISE
   
   

   Tester Display	Measurement Item/Range		Normal Condition	Diagnostic Note
   Country# (F Radar Sens)	Destination country for millimeter wave radar sensor assembly/JPN, NA, EURO, CA, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC or NOFIXX		Actual country code	-

   HINT: 

   The country specification information stored in the driving support ECU assembly is determined by the country specification information stored in the main body ECU (multiplex network body ECU). If the country specification information for the millimeter wave radar sensor assembly matches the vehicle, the country specification information for the main body ECU (multiplex network body ECU) and driving support ECU assembly is incorrect and the main body ECU (multiplex network body ECU) and driving support ECU assembly need to be replaced.

NG → See step   3 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .
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.

   OK

   DTC C1A0A is not output

NG → REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVING SUPPORT ECU ASSEMBLY 

OK → See step   4