DTC U1102: Lost Communication with Radar Sensor [12/2013 - 11/2016]: Description
WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
The millimeter wave radar sensor assembly and driving support ECU assembly transmit the data for general vehicle control and diagnosis function via CAN communication. The driving support ECU assembly determines the curve radius information based on signals from the spiral cable sub-assembly and airbag sensor assembly (yaw rate sensor). The driving support ECU assembly transmits the current vehicle speed and curve radius information to the millimeter wave radar sensor assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U1102 | Lost Communication with Radar Sensor | The ECM detects a communication error signal (from the driving support control ECU assembly to the millimeter wave radar sensor assembly) for approximately 0.15 seconds or more while the dynamic radar cruise control is operating. |
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