Lexus IS250 IS220d GSE20 ALE20 - CRUISE CONTROL
DTC P1615 Communication Error from Distance Control ECU to ECM
DTC U1101 Lost Communication with Distance Control ECU
DESCRIPTION
The distance control ECU receives information about the area in front of the vehicle from the millimeter wave radar sensor and then sends a brake control demand signal (deceleration demand) and diagnosis signals, such as millimeter wave radar sensor grime signals or millimeter wave radar sensor malfunction signals, to the ECM.
| DTC No. | DTC Detection Condition | Trouble Area |
| P1615 | While the dynamic radar cruise control is either preparing for operation or operating, if communication data from the distance control ECU is logically inconsistent for a certain amount of time, the ECM records this logical error code | Communication circuit Distance control ECU (Cruise control ECU) ECM |
| U1101 | While the dynamic radar cruise control is either preparing for operation or operating, if communication data from the distance control ECU is invalid for a certain amount of time, The ECM records this communication cut off code | Communication circuit Distance control ECU (Cruise control ECU) ECM |
INSPECTION PROCEDURE
- HINT:
- This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system are output.
| 1.CHECK CAN COMMUNICATION SYSTEM |
Refer to HOW TO PROCEED WITH TROUBLESHOOTING .