VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1225, C1226, C1227, C1228, C1468, C1469, C146A, C146B

DTC Code DTC Name
C1225 SM Solenoid Circuit
C1226 SA2 Solenoid Circuit
C1227 SA3 Solenoid Circuit
C1228 STR Solenoid Circuit
C1468 SFR Solenoid Circuit
C1469 SFL Solenoid Circuit
C146A SRR Solenoid Circuit
C146B SRL Solenoid Circuit

DESCRIPTION

These solenoids turn on when signals are received from the skid control ECU (brake actuator assembly) and they control the pressure acting on the wheel cylinders to control the braking force.

DTC No. DTC Detection Condition Trouble Area
C1225 Solenoid valve signal does not match the check result.

  • Solenoid circuit

  • Solenoid valve (brake actuator assembly)
C1226 Solenoid valve signal does not match the check result.

  • Solenoid circuit

  • Solenoid valve (brake actuator assembly)
C1227 Solenoid valve signal does not match the check result.

  • Solenoid circuit

  • Solenoid valve (brake actuator assembly)
C1228 Solenoid valve signal does not match the check result.

  • Solenoid circuit

  • Solenoid valve (brake actuator assembly)
C1468 Solenoid valve signal does not match the check result.

  • Solenoid circuit

  • Solenoid valve (brake actuator assembly)
C1469 Solenoid valve signal does not match the check result.

  • Solenoid circuit

  • Solenoid valve (brake actuator assembly)
C146A Solenoid valve signal does not match the check result.

  • Solenoid circuit

  • Solenoid valve (brake actuator assembly)
C146B Solenoid valve signal does not match the check result.

  • Solenoid circuit

  • Solenoid valve (brake actuator assembly)

WIRING DIAGRAM

Refer to DTC C146E Click here.

PROCEDURE


  1. RECONFIRM DTC

    Tech Tips

    These codes are detected when a problem is determined in the skid control ECU (brake actuator assembly).

    The solenoid circuits are in the skid control ECU (brake actuator assembly).

    Therefore, solenoid circuit inspection and solenoid unit inspection cannot be performed. Be sure to check if any DTCs are output before replacing the skid control ECU (brake actuator assembly).


    1. Clear the DTCs Click here.

    2. Turn the ignition switch off.

    3. Start the engine.

    4. Drive the vehicle at a speed of 50 km/h (31 mph) or more.

    5. Check if the same DTC is output Click here.

      Result
      Result Proceed to
      DTCs C1225, C1226, C1227, C1228, C1468, C1469, C146A and C146B are not output. A
      DTCs C1225, C1226, C1227, C1228, C1468, C1469, C146A and/or C146B are output. B

      Tech Tips


      • The skid control ECU (brake actuator assembly) performs self diagnosis of the solenoid circuit after the ignition switch is turned to ON.

      • If the normal system code is output (no DTCs are output), slightly jiggle the connectors, wire harness, and fuses of the skid control ECU (brake actuator assembly).

      • If any DTCs are output while jiggling a connector or wire harness of the skid control ECU (brake actuator assembly), inspect and repair the connector or wire harness.

      • If no DTCs were output when reconfirming DTCs, checking for intermittent problems is necessary because it is suspected that the original DTCs were stored due to the poor connection of a connector terminal.


    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here