| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001BCGN |
| Model Year Start: 2019 | Model: Avalon | Prod Date Range: [04/2018 - 08/2021] |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for Gasoline Model): U1104; Lost Communication with Driving Support ECU; 2019 - 2021 MY Avalon [04/2018 - 08/2021] | ||
|
DTC |
U1104 |
Lost Communication with Driving Support ECU |
DESCRIPTION
The driving support ECU assembly sends vehicle speed and vehicle condition information to the millimeter wave radar sensor assembly. The millimeter wave radar sensor assembly then sends information on the presence, distance, and relative speed of objects in front of the vehicle to the driving support ECU assembly. The driving support ECU assembly sends this information to the ECM and the ECM operates the dynamic radar cruise control system.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
|---|---|---|---|---|
|
U1104 |
Lost Communication with Driving Support ECU |
While the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, a communication error between the driving support ECU assembly and the millimeter wave radar sensor assembly is detected for approximately 1 second. |
Pre-collision system |
Does not come on |
PROCEDURE
|
1. |
GO TO PRE-COLLISION SYSTEM |
HINT:
If DTC U1104 is output by the dynamic radar cruise control system, perform troubleshooting for the pre-collision system.
Click here
![2019 - 2021 MY Avalon [04/2018 - 08/2021]; PRE-COLLISION: PRE-COLLISION SYSTEM (for Gasoline Model): U1104; Lost Communication with Driving Support ECU](/t3Portal/stylegraphics/info.gif)
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