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

DTC Code DTC Name
C1225 SM 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 brake actuator assembly (skid control ECU) and they control the pressure acting on the wheel cylinders to control the braking force.

DTC NO. DTC Detection Condition Trouble Area
C1225

When any of the following is detected:


  1. While outputting switching solenoid (SM1 or SM2) ON, overcurrent continues for 0.1 seconds or more.

  2. While outputting switching solenoid (SM1 or SM2) OFF, an open circuit continues for 0.05 seconds or more.

  3. While outputting switching solenoid (SM1 or SM2) ON, an open circuit continues for 0.05 seconds or more.

  4. While outputting switching solenoid (SM1 or SM2) OFF, current continues to be applied for 0.05 seconds or more.

  5. A condition in which the outputs from switching solenoids 1 and 2 are different continues for 0.2 seconds or more.

  • SM1 or SM2 circuit

  • Brake actuator assembly (Skid control ECU)

C1468

C1469

C146A

C146B

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

  • Solenoid circuit

  • Brake actuator assembly (Skid control ECU)

WIRING DIAGRAM

A005JBSE05

CAUTION / NOTICE / HINT

Note


  • When replacing the brake actuator assembly (skid control ECU), perform zero point calibration Click here.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. RECONFIRM DTC

    Tech Tips

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

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

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


    1. Clear the DTC Click here.

    2. Start the engine.

    3. Drive the vehicle at the speed of 20 km/h (12 mph) or more for 30 seconds or more.

    4. Check if the same DTC is recorded Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output (for LHD) B
      DTC is output (for RHD) C

      Tech Tips


      • If a speed signal of 6 km/h (4 mph) or more is input to the brake actuator assembly (skid control ECU), with the ignition switch ON and the stop light switch off, the ECU performs self diagnosis of the motor and solenoid circuits.

      • If the normal system code is output (the trouble code is not output), slightly jiggle the connectors, wire harness, and fuses of the brake actuator assembly (skid control ECU). Make sure that no DTCs are output.

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

      • The DTCs were probably output due to a bad connection of the connector terminal.


    A

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Click here

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here