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Home >> Toyota >> 2016 >> 4Runner Limited, AWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (For Vacuum Brake Booster) - Diagnostic Codes (C0040-C137B) >> VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster) >> DTC C124A-00: Non-learning of the Braking System information [08/2019 - ] >> Description

DTC C124A-00: Non-learning of the Braking System information [08/2019 - ]: Description

The circuit is used to send TRAC and VSC control information from the skid control ECU (brake actuator assembly) to the ECM, and engine control information from the ECM to the skid control ECU (brake actuator assembly) through the CAN communication system.

DTC No. Detection Item DTC Detection Condition Trouble Area
C124A-00 Non-learning of the Braking System information Any of the following is detected:
  • Engine model information sent from the ECM does not match the information stored in the skid control ECU.
  • No system information stored in the skid control ECU.
  • Incorrect installation of the skid control ECU or ECM.
  • When the skid control ECU is malfunctioning.
  • ECM malfunction or ECM with incorrect part number installed
  • Skid control ECU (Brake actuator assembly)
C124A-00 DTC DETECTION CONDITIONS

  Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition - - - - -
Malfunction Status Engine model information sent from the ECM does not match the information stored in the skid control ECU. ◦ - - -
No system information stored in the skid control ECU. - ◦ - -
Incorrect installation of the skid control ECU or ECM. - - ◦ -
When the skid control ECU is malfunctioning. - - - ◦
Detection Time - - - -
Number of Trips 1 trip 1 trip 1 trip 1 trip

HINT: 

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