C1A72

DTC Code	DTC Name
C1A72	Communication Error from FCM to Driving Support ECU

DESCRIPTION

If a communication error between the driving support ECU assembly and forward recognition camera is detected, DTC C1A72 is stored.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1A72	Communication Error from FCM to Driving Support ECU	2 seconds after the power switch is turned on (IG), a communication error between the driving support ECU assembly and the forward recognition camera is detected.	CAN communication system Forward recognition camera Pre-collision system

CAUTION / NOTICE / HINT

Note:

When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
If the forward recognition camera has been replaced with a new one, be sure to perform Forward Recognition Camera Learning.

Click here

PROCEDURE

CHECK FOR DTCs (PRE-COLLISION SYSTEM)

Check for DTCs are output.

Tip:

Confirm that there is no communication error between the forward recognition camera and driving support ECU.

Result

Result	Proceed to
DTC U023A is not output	A
DTC U023A is output	B

CHECK FOR DTCs (LKA/LDA SYSTEM)

Clear the DTCs.

Click here
1. Chassis > LKA/LDA > Clear DTCs
Make sure that the DTC detection conditions are met.

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

Check for DTCs.

Result

Result	Proceed to
DTC C1A72 is not output	A
DTC C1A72 is output	B

REPLACE FORWARD RECOGNITION CAMERA

Perform Forward Recognition Camera Learning.

Result

Proceed to
NEXT

LKA/LDA SYSTEM(for Mono Camera Type), Diagnostic DTC:C1A72