DTC    C1A02    Vehicle Information Not Obtained

for Preparation Click here


DESCRIPTION

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 power management control ECU and memorizes the information.
DTC C1A02 is stored when the driving support ECU receives the vehicle specification information from the main body ECU 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

INSPECTION PROCEDURE

HINT:
This circuit uses CAN communication. Therefore, be sure to check that the CAN communication system is normal before performing inspection.

1.CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)

  1. Using the intelligent tester, enter the following menus: Body / Pre-Crash 2 / DTC.

  1. Clear the DTCs (Click here).

  1. Recheck for DTCs.

    OK:
    CAN communication system DTC is not output.



NG
GO TO CAN COMMUNICATION SYSTEM (Click here)
OK

REPLACE DRIVING SUPPORT ECU (Click here)