P1616
DTC P1616 Communication Error from HV ECU to Distance Control ECUDTC U1101-728 Lost Communication with HV ECU
DESCRIPTION
DTC Detection Condition:
The hybrid vehicle control ECU receives signals from each sensor and ECU, then sends signals such as the A/T signal, cruise control operation signal, low speed operation signal, brake control operation signal and radar light emission prohibiting signal, etc. to the distance control ECU. The hybrid vehicle control ECU is the only component that has a function to record and output the DTCs in the dynamic radar cruise control system. Therefore if the distance control ECU detects a communication error from the hybrid vehicle control ECU, it sends the malfunction signal back to the hybrid vehicle control ECU.
Step 1:
INSPECTION PROCEDURE
HINT: This circuit uses CAN communication. Therefore, if there are any malfunction in the communication circuit, one or more DTCs in the CAN communication system are output.