DTC P1616: Communication Error from ECM to Distance Control ECU [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 ECM receives signals from each sensor and ECU, then sends signals such as A/T signals, cruise control operation signals, low speed operation signals, brake control operation signals, and radar beam emission prohibiting signals to the driving support ECU assembly. The ECM is the only component that has a function to store and output DTCs in the dynamic radar cruise control system. Therefore, if the driving support ECU assembly detects a communication error from the ECM, it sends a malfunction signal back to the ECM.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P1616 | Communication Error from ECM to Distance Control ECU | While the dynamic radar cruise control is either preparing for operation or operating, the ECM continuously receives a logic error signal from the driving support ECU assembly for more than a certain amount of time, the ECM stores this DTC. |
|