SFL Solenoid Circuit - Vehicle Stability Control System (w/o VDIM)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (w/o VDIM): C0226/21: SFR Solenoid Circuit

DTC C0226/21 - SFR Solenoid Circuit

DTC C0236/22 - SFL Solenoid Circuit

DTC C0246/23 - SRR Solenoid Circuit

DTC C0256/24 - SRL Solenoid Circuit

DTC C1225/25 - SM Solenoid Circuit

DESCRIPTION

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






WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE: When replacing the brake actuator assembly, perform zero point calibration Vehicle Stability Control System (W/O VDIM).

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 Vehicle Stability Control System (w/o VDIM).
(b) Start the engine.
(c) Drive the vehicle at the speed of 4 mph (6 km/h) or more.
(d) Check if the same DTC is recorded Vehicle Stability Control System (w/o VDIM).
Result:






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