Dtc P1616 Communication Error From Ecm To Distance Control Ecu
DESCRIPTION
INSPECTION PROCEDURE
DTC P1616 Communication Error from ECM to Distance Control ECU |
DTC U0100 Lost Communication with ECM/PCM "A" |
DESCRIPTION
The ECM 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 ECM is the only component that has a function to record and output the DTCs in the dynamic radar cruise control system. Therefor if the distance control ECU detects a communication error from the ECM, it sends the malfunction signal back to the ECM.DTC No.
| DTC Detection Condition
| Trouble Area
|
P1616
| While dynamic radar cruise control is either preparing for operation or operating, if ECM continuously receives logical error signal from distance control ECU for certain amount of time, ECM records logical error code
| - Communication circuit
- ECM
- Distance control ECU (Cruise control ECU)
|
U0100
| While dynamic radar cruise control is either preparing for operation or operating, if ECM continuously receives communication cut off signal from distance control ECU for certain amount of time, ECM records communication cut off code
| - Communication circuit
- ECM
- Distance control ECU (Cruise control ECU)
|
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.
| 1.GO TO CAN COMMUNICATION SYSTEM |
Refer to how to proceed with troubleshooting (Click here).