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Home >> Lexus >> 2007 >> RX 350 FWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Vehicle Stability Control System >> DTC C0226/21, C0236/22, C0246/23, C0256/24, C1225/25: SFR Solenoid Circuit; SFL Solenoid Circuit; SRR Solenoid Circuit; SRL Solenoid Circuit; SM Solenoid Circuit >> Description

DTC C0226/21, C0236/22, C0246/23, C0256/24, C1225/25: SFR Solenoid Circuit; SFL Solenoid Circuit; SRR Solenoid Circuit; SRL Solenoid Circuit; SM Solenoid Circuit: Description

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

DTC DETECTION CONDITION TABLE

DTC No. DTC Detection Condition Trouble Area
C0226/21 Open or short circuit in front right solenoid circuit (SFRR or SFRH) continues for 0.05 sec. or more.
  • Brake actuator assembly Each solenoid circuit
C0236/22 Open or short circuit in front left solenoid circuit (SFLR or SFLH) continues for 0.05 sec. or more.
  • Brake actuator assembly Each solenoid circuit
C0246/23 Open or short circuit in rear right solenoid circuit (SRRR or SRRH) continues for 0.05 sec. or more.
  • Brake actuator assembly
  • Each solenoid circuit
C0256/24 Open or short circuit in rear left solenoid circuit (SRLR or SRLH) continues for 0.05 sec. or more.
  • Brake actuator assembly
  • Each solenoid circuit
C1225/25 When any of the following (1 to 5) is detected:
  1. Both of the following conditions continue for at least 0.05 seconds.
    • When the switching solenoid (SM1 or SM2) outputs an ON signal.
    • Overcurrent.
  2. Both of the following conditions continues for at least 0.05 seconds.
    • When the switching solenoid (SM1 or SM2) outputs an OFF signal.
    • Open circuit.
  3. Both of the following conditions continue for at least 0.05 seconds.
    • When the switching solenoid (SM1 or SM2) outputs an OFF signal.
    • Output current is more than 0.15 A.
  4. All of the following conditions continue for at least 0.05 seconds.
    • When the switching solenoid (SM1 or SM2) outputs ON signal.
    • Output current is more than 0.348 A.
    • Difference between current monitor and target value exceeds 2 A for 0.1 to 0.15 sec.
  5. All of the following conditions continue for at least 0.2 seconds.
    • When the switching solenoid (SM1 or SM2) outputs an ON signal.
    • Output current is more than 0.348 A.
    • Switching solenoid (SM1 or SM2) duty ratio:
      1. More than 2.08
      2. Less than 0.48
  • Brake actuator assembly
  • Each solenoid circuit
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