ANTI-LOCK BRAKE SYSTEM(for Type B), Diagnostic DTC:C1468,C1469,C146A and 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

An open or short in the solenoid circuit continues for 0.05 seconds or more.

  • Solenoid circuit

  • Solenoid valve (Brake actuator assembly)

C1469

SFL Solenoid Circuit

An open or short in the solenoid circuit continues for 0.05 seconds or more.

  • Solenoid circuit

  • Solenoid valve (Brake actuator assembly)

C146A

SRR Solenoid Circuit

An open or short in the solenoid circuit continues for 0.05 seconds or more.

  • Solenoid circuit

  • Solenoid valve (Brake actuator assembly)

C146B

SRL Solenoid Circuit

An open or short in the solenoid circuit continues for 0.05 seconds or more.

  • Solenoid circuit

  • Solenoid valve (Brake actuator assembly)

PROCEDURE

  1. RECONFIRM DTC

    Tip:

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

    The solenoid circuits are in the 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 DTC.

      Click here

      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the ignition switch off.

    3. Start the engine.

    4. Perform a road test.

    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
      Tip:

      • 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 hereClick hereClick here

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY

    Click hereClick here