DTC P1615 Communication Error from Distance Control ECU to ECM: Description
WARNING: This page is about a different car, the 2008 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
The distance control ECU receives information about the area in front of the vehicle from the laser radar sensor and then sends a brake control demand signal (deceleration demand) and diagnosis signals, such as laser radar sensor grime signals or laser radar sensor malfunction signals, to the ECM.
DTC DETECTION CONDITION CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P1615 | While the dynamic laser cruise control is either preparing for operation or operating, if communication data from the distance control ECU is logically inconsistent for 0.5 seconds, the ECM records this logical error code |
|