Dtc C0226/21 Sfr Solenoid Circuit

Brake. Corolla. Zre142 Aze141
Brake Control Dynamic Control Systems. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

RECONFIRM DTC

DTC C0226/21 SFR Solenoid Circuit

DTC C0236/22 SFL Solenoid Circuit

DTC C0246/23 SRR Solenoid Circuit

DTC C0256/24 SRL 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 Code
DTC Detection Condition
Trouble Area
C0226/21
C0236/22
C0246/23
C0256/24
When a solenoid relay is ON and the IG1 terminal voltage is 17.4 V or less, open or short in the solenoid circuit continues for 0.05 seconds or more.
  1. Solenoid circuit
  2. Brake actuator assembly

WIRING DIAGRAM


Corolla. Zre142 Aze141.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C0226/21 Sfr Solenoid Circuit


INSPECTION PROCEDURE

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 DTCs are output before replacing the brake actuator assembly.

  1. Clear the DTCs (COROLLA_ZRE142 RM000000XHV0F3X.html).

  1. Start the engine.

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

  1. Check if the same DTC is recorded (COROLLA_ZRE142 RM000000XHV0F3X.html).

    Result:

    Result
    		Proceed to
    DTCs (C0226/21, C0236/22, C0246/23 and C0256/24) are not output
    		A
    DTCs (C0226/21, C0236/22, C0246/23 and/or C0256/24) are output
    		B
    HINT:
    1. If a speed signal of 6 km/h (4 mph) or more is input to the 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.
    2. If the normal system code is output (no trouble codes are output), slightly jiggle the connectors, wire harness, and fuses of the brake actuator assembly. Make sure that no DTCs are output.
    3. If any DTCs are output while jiggling a connector or wire harness of the brake actuator assembly (skid control ECU), inspect and repair the connector or wire harness.
    4. It is suspected that the DTCs were output due to a bad connection of the connector terminal.


B
REPLACE BRAKE ACTUATOR ASSEMBLY (COROLLA_ZRE142 RM0000013P6022X.html)
A

CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (COROLLA_ZRE142 RM000000XHP0ELX.html)