Dtc C0226 Sfr Solenoid Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

RECONFIRM DTC

DTC C0226 SFR Solenoid Circuit

DTC C0236 SFL Solenoid Circuit

DTC C0246 SRR Solenoid Circuit

DTC C0256 SRL Solenoid Circuit

DTC C1225 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 Code
DTC Detection Condition
Trouble Area
C0226
C0236
C0246
C0256
An open or short in the solenoid circuit continues for 0.05 seconds or more.
  1. Solenoid circuit
  2. Brake actuator assembly
C1225
One of the following conditions is met:
  1. While switching solenoid (SM1 or SM2) is outputting ON, overcurrent continues for 0.1 seconds or more.
  2. While switching solenoid (SM1 or SM2) is outputting OFF, an open circuit continues for 0.05 seconds or more.
  3. While switching solenoid (SM1 or SM2) is outputting ON, an open circuit continues for 0.05 seconds or more.
  4. While switching solenoid (SM1 or SM2) is outputting 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.
  1. SM1 or SM2 circuit
  2. Brake actuator assembly

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C0226 Sfr Solenoid Circuit


INSPECTION PROCEDURE

NOTICE:
When replacing the brake actuator assembly, perform calibration (LandCruiser RM000000XHR0BJX.html).
1.RECONFIRM DTC
HINT:
These codes are stored when a problem is detected in the brake actuator assembly.
The solenoid circuits are in the brake actuator assembly.
Therefore, solenoid circuit inspections and solenoid unit inspections cannot be performed. Be sure to check if any DTCs are output before replacing the brake actuator assembly.

  1. Clear the DTCs (LandCruiser RM000000XHV0KDX.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 output (LandCruiser RM000000XHV0KDX.html).

    Result
    Result
    		Proceed to
    DTC not output
    		A
    DTC 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 (the trouble code is not output), slightly jiggle the connectors, wire harnesses, 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. The DTCs were probably output due to a bad connection of the connector terminal.


B
REPLACE BRAKE ACTUATOR ASSEMBLY (LandCruiser RM0000034UX02TX.html)
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)