DTC    P1630    Communication Error from VSC to ECM

DTC    U0122    Lost Communication with Vehicle Dynamics Control Module

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DESCRIPTION

When the dynamic radar cruise control system is operating, the ECM sends signals such as brake control demand signals and warning demand signals to the skid control ECU.

DTC No.
DTC Detection Condition
Trouble Area
P1630
While dynamic radar cruise control is either preparing for operation or operating, if communication data from skid control ECU is logically inconsistent for certain amount of time, ECM records logical error code
  1. Communication circuit
  2. ABS & traction actuator (Skid control ECU)
  3. ECM
U0122
While dynamic radar cruise control is either preparing for operation or operating, if communication data from skid control ECU is invalid for a certain amount of time, ECM records communication cut off code
  1. Communication circuit
  2. ABS & traction actuator (Skid control ECU)
  3. 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.GO TO CAN COMMUNICATION SYSTEM
    Refer to how to proceed with troubleshooting (Click here).