Toyota Corolla Cross: CAN Register Fixing Internal Electronic Failure (U100049)
DESCRIPTION
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 |
|---|---|---|---|
|
U100049 | CAN Register Fixing Internal Electronic Failure | Detection condition:
| Headlight ECU sub-assembly LH |
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
U100049 | CAN Register Fixing Internal Electronic Failure | Detection condition:
| Headlight ECU sub-assembly RH |
CAUTION / NOTICE / HINT
NOTICE:
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.
Click here .gif)
PROCEDURE
| 1. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Headlight Control > Clear DTCs Body Electrical > Headlight Control (Sub) > Clear DTCs
|
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| 2. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Headlight Control > Trouble Codes Body Electrical > Headlight Control (Sub) > Trouble CodesOK:
DTC U100049 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 |
.gif) | USE SIMULATION METHOD TO CHECK |
| B |
| REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
| C |
| REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH |
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