Dtc P1630 Communication Error From Vsc To Ecm

Cruise Control System. Lexus Is250, Is220D. Gse20 Ale20
Cruise Control. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

INSPECTION PROCEDURE

DTC P1630 Communication Error from VSC to ECM

DTC U0122 Lost Communication with Vehicle Dynamics Control Module


DESCRIPTION

The skid control ECU sends signals such as cruise control cancel demand signals and brake operation demand from ECM response signals to the ECM when the dynamic radar cruise control system is in operation.

DTC No.
DTC Detection Condition
Trouble Area
P1630
While the dynamic radar cruise control is either preparing for operation or operating, if communication data from the skid control ECU is logically inconsistent for a certain amount of time, the ECM records this 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 the skid control ECU is invalid for a certain amount of time, the ECM records the 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.CHECK CAN COMMUNICATION SYSTEM
    Refer to HOW TO PROCEED WITH TROUBLESHOOTING.for LHD: (Click here)for RHD: (Click here)