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Home >> Lexus >> 2022 >> LS 500h RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/ Advanced Park) - Diagnostic Codes (3 Of 5) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Advanced Park) >> DTC C124A-00: ECM Communication [11/2021 - 10/2023] >> Description

DTC C124A-00: ECM Communication [11/2021 - 10/2023]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C124A-00 ECM Communication Either of the following is detected:
  • The engine type, powertrain variation and destination information sent from the hybrid vehicle control ECU assembly do not match the information stored in the No. 2 skid control ECU (brake actuator assembly).
  • No system information stored in the No. 2 skid control ECU (brake actuator assembly).
  • Incorrect hybrid vehicle control ECU assembly installed
  • No. 2 skid control ECU (brake actuator assembly)
Does not come on Output ECU: No. 2 skid control ECU (brake actuator assembly)
C124A-00 DTC DETECTION CONDITIONS

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition - - -
Malfunction Status The engine type, powertrain variation and destination information sent from the hybrid vehicle control ECU assembly do not match the information stored in the No. 2 skid control ECU (brake actuator assembly) ◦ -
No system information stored in the No. 2 skid control ECU (brake actuator assembly) - ◦
Detection Time - -
Number of Trips 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.