The headlight ECU sub-assembly LH or headlight ECU sub-assembly RH stores this DTC if it detects an internal malfunction related to the CAN communication system.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Note |
|---|---|---|---|---|---|
| U1000 | CAN Communication Failure (Message Registry) | Detection condition:
The engine switch is on (IG) Malfunction status:
CAN communication failure Malfunction duration:
- |
·
Headlight ECU sub-assembly LH ·
Headlight ECU sub-assembly RH |
HL AutoLeveling
HL AutoLeveling (Sub) |
- |
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.
When replacing the headlight ECU sub-assembly LH, always replace it with a new one. If a headlight ECU sub-assembly LH 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.
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / HL AutoLeveling or HL AutoLeveling (Sub) / Clear DTCs.
Clear the DTCs.
| Proceed to |
|---|
| NEXT |
NEXT
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / HL AutoLeveling or HL AutoLeveling (Sub) / Trouble Codes.
Check for DTCs.
DTC U1000 is not output.
| Result | Proceed to |
|---|---|
| OK | A |
| NG (DTC output from headlight ECU sub-assembly LH) | B |
| NG (DTC output from headlight ECU sub-assembly RH) | C |
A
B
C