DTC U1104: Lost Communication with Driving Support ECU [04/2018 - 08/2021]: Description
WARNING: This page is about a different variant/trim than selected.
The driving support ECU assembly is connected to the millimeter wave radar sensor assembly, forward recognition camera and skid control ECU (brake booster with master cylinder assembly) via CAN communication. If communication with the millimeter wave radar sensor assembly, forward recognition camera or skid control ECU (brake booster with master cylinder assembly) stops, the driving support ECU assembly stores DTC U1104.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U1104 | Lost Communication with Driving Support ECU | Any of the following conditions is met:
|
|
DTC DETECTION CONDITIONS:
| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | ||
| Diagnosis Condition | Power switch is on (IG) | ◦ | ◦ | ◦ |
| Malfunction Status | A communication error between the driving support ECU assembly and the millimeter wave radar sensor assembly is detected | ◦ | - | - |
| A communication error between the driving support ECU assembly and the forward recognition camera is detected | - | ◦ | - | |
| A communication error between the driving support ECU assembly and the skid control ECU (brake booster with master cylinder assembly) is detected | - | - | ◦ | |
| Detection Time | Approximately 0.2 seconds or more | Approximately 0.3 seconds or more | Approximately 1.5 seconds or more | |
| Number of Trips | 1 trip | 1 trip | 1 trip | |
HINT:
DTC will be stored when conditions of any pattern in the table above are met.