ANTI-LOCK BRAKE SYSTEM, Diagnostic DTC:C1468, C1469, C146A, C146B

DTC Code DTC Name
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. Detection Item DTC Detection Condition Trouble Area
C1468 SFR Solenoid Circuit Solenoid valve signal does not match the check result.

  • Solenoid circuit

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

  • Solenoid circuit

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

  • Solenoid circuit

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

  • Solenoid circuit

  • Solenoid valve (brake actuator assembly)

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 DTC is output before replacing the skid control ECU (brake actuator assembly).


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the ignition switch off.

    3. Start the engine.

    4. Drive the vehicle at a speed of 20 km/h (12 mph) or more.

    5. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTCs C1468, C1469, C146A and C146B are not output. A
      DTCs 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