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Home >> Lexus >> 2007 >> IS 250 AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> VEHICLE STABILITY CONTROL SYSTEM (w/o VDIM) >> DTC C0226/21 SFR Solenoid Circuit; DTC C0236/22 SFL Solenoid Circuit; DTC C0246/23 SRR Solenoid Circuit; DTC C0256/24 ISRL Solenoid Circuit; DTC C1225/25 SM Solenoid Circuit >> Inspection Procedure

Inspection Procedure

NOTE: When replacing the brake actuator assembly, perform zero point calibration (See CALIBRATION  ).
  1. RECONFIRM DTC 

    HINT:

    These codes are detected when a problem is determined in the 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 DTC code is output before replacing the brake actuator assembly.

    1. Clear the DTC (See DTC CHECK / CLEAR  ).
    2. Start the engine.
    3. Drive the vehicle at the speed of 4 mph (6 km/h) or more.
    4. Check if the same DTC is recorded (See DTC CHECK / CLEAR  ).

      Result 

      DTC RESULT CHART

      Condition Proceed to
      DTCs (C0226/21, C0236/22, C0246/23, C0256/24 and/or C1225/25) are not output A
      DTCs (C0226/21, C0236/22, C0246/23, C0256/24 and/or C1225/25) are output B

      HINT:

      • If a speed signal of 4 mph (6 km/h) or more is input to the skid control ECU, with the engine switch on (IG) 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. Make sure that no DTCs are output.
      • If any DTCs are output while jiggling a connector or wire harness of the brake actuator (skid control ECU), inspect and repair the connector or wire harness.

    B: REPLACE BRAKE ACTUATOR ASSEMBLY 

    A: USE SIMULATION METHOD TO CHECK