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Home >> Lexus >> 2004 >> LS 430 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Laser Cruise Control System - Diagnosis >> DTC P1630, U0122: Communication Error From VSC To ECM, Lost Communication With Vehicle Dynamic Control Module >> Circuit Description

Circuit Description

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

DTC DETECTING CONDITION

DTC No. DTC Detecting Condition Trouble Area
P1630 While the dynamic laser cruise control is either preparing for operation or operating, if the communication data from the skid control ECU is inconsistent logically for a certain amount of time or more, the ECM records the logical error code.
  • Communication circuit
  • ABS & traction actuator assy (Skid control ECU)
  • ECM
U0122 While the dynamic laser cruise control is either preparing for operation or operating, if the communication data from the skid control ECU is invalid for a certain amount of time or more, the ECM records the communication cut off code.
  • Communication circuit
  • ABS & traction actuator assy (Skid control ECU)
  • ECM
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