When a new driving support ECU is installed, it receives vehicle specification information (destination, steering wheel position, 2WD or AWD information, etc.) from the main body ECU and ECM and memorizes the information.
DTC C1A02 is stored when the driving support ECU receives the vehicle specification information from the main body ECU and ECM but cannot record it.
|DTC No.||DTC Detection Condition||Trouble Area|
|C1A02||Inconsistent vehicle specification information between the main body ECU and driving support ECU continues for 1 second or more.||Driving support ECU|
This circuit uses CAN communication. Therefore, be sure to check that the CAN communication system is normal before performing inspection Click here.
CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)
Using the intelligent tester, enter the following menus: Body / Pre-Crash 2 / DTC.
Clear the DTCs Click here.
Recheck for DTCs.
|CAN communication system DTC is not output.|
GO TO CAN COMMUNICATION SYSTEM Click here
REPLACE DRIVING SUPPORT ECU Click here