C0256

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C0226/21,C0236/22,C0246/23,C0256/24,C1225/25: SFR 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.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
When replacing the brake actuator assembly, perform zero point calibration Calibration.

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 DTC code is output before replacing the brake actuator assembly.

(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Start the engine.

(c) Drive the vehicle at the speed of 6 km/h (4 mph) or more.

(d) Check if the same DTC is recorded Reading and Clearing Diagnostic Trouble Codes.

Result:





HINT
- If a speed signal of 6 km/h (4 mph) 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 assembly (skid control ECU), inspect and repair the connector or wire harness.

B -- REPLACE BRAKE ACTUATOR ASSEMBLY

A -- CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION)