DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC: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, 2WD or AWD information, etc.) from the main body ECU (multiplex network body ECU) and stores 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 store it.

DTC No.	DTC Detection Condition	Trouble Area
C1A02	While the power switch is on (IG) and the dynamic radar cruise control system is operating, the driving support ECU assembly cannot stored the vehicle specification information for approximately 0.1 seconds 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 the driving support ECU assembly will not match the information from the vehicle. As a result, 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 FOR DTCs

Clear the DTCs Click here.
Make sure that the DTC detection conditions are met.
Tech Tips

If the detection conditions are not met, the system cannot detect the malfunction.
1. Turn the power switch on (IG).
2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON/OFF).
3. Wait for 0.1 seconds or more.

Check for DTCs Click here.

Result

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

REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

USE SIMULATION METHOD TO CHECK Click here