C1A02

DTC Code	DTC Name
C1A02	Vehicle Information Not Obtained

DESCRIPTION

When a new driving support ECU assembly is installed, it receives vehicle specification information (destination, steering wheel position, etc.) from the main body ECU (multiplex network body ECU) and memorizes the information.

DTC C1A02 is stored when the driving support ECU assembly receives the vehicle specification information from the main body ECU (multiplex network body ECU) but cannot record it.

DTC No.	DTC Detection Condition	Trouble Area
C1A02	Inconsistent vehicle specification information between the main body ECU (multiplex network body ECU) and driving support ECU assembly continues for 1 second or more while the vehicle is being driven at a speed of 50 km/h (31 mph) or more.	Driving support ECU assembly

CAUTION / NOTICE / HINT

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 it will not match the information from the vehicle and a DTC may be stored.
First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting

for LHD: Click here
for RHD: Click here

PROCEDURE

CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)

Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Pre-Crash 2 / Trouble Codes.
Clear the DTCs Click here.
Drive the vehicle at a speed of 50 km/h (31 mph) or more.

Tech Tips

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

Check for DTCs Click here.

Result
Result	Proceed to
DTC C1A02 is output	A
DTC C1A02 is not output	B

A

REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

B

USE SIMULATION METHOD TO CHECK (SYMPTOM SIMULATION) Click here

PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A02