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 engine switch is turned on (IG), a communication error between the driving support ECU assembly and the forward recognition camera is detected. |
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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.
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.
The LKA/LDA system uses the CAN communication system. First, confirm that there are no malfunction in the CAN communication system. Refer to How to Proceed with Troubleshooting.
PROCEDURE
CHECK FOR DTCs (PRE-CRASH SAFETY SYSTEM)
Tech Tips
Confirm that there is no communication error between the forward recognition camera and driving support ECU.
Check for DTCs are output.
Result | ||||||
---|---|---|---|---|---|---|
|
B |
GO TO PRE-CRASH SAFETY SYSTEM Click here |
A |
CHECK FOR DTCs (LKA/LDA SYSTEM)
Clear the DTCs.
Perform the following procedure.
Tech Tips
If the following procedure is not performed, the previously output DTC cannot be detected.
Turn the engine switch on (IG) and wait 7 seconds or more.
Check for DTCs.
Result | ||||||
---|---|---|---|---|---|---|
|
A |
USE SIMULATION METHOD TO CHECK Click here |
B |
REPLACE FORWARD RECOGNITION CAMERA
Replace the forward recognition camera.
Perform Forward Recognition Camera Learning.
Result | ||
---|---|---|
|
NEXT |
CHECK FOR DTCs (LKA/LDA SYSTEM)
Clear the DTCs.
Perform the following procedure.
Tech Tips
If the following procedure is not performed, the previously output DTC cannot be detected.
Turn the engine switch on (IG) and wait 7 seconds or more.
Check for DTCs.
Result | ||||||
---|---|---|---|---|---|---|
|
A |
END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) |
B |
REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here |