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

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (w/ 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

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 skid control ECU, perform zero point calibration and store system information Vehicle Stability Control System (W/ VDIM).


HINT: When C0278/11 or C0279/12 is output together with C0226/21, C0236/22, C0246/23, or C0256/24, inspect and repair the trouble areas indicated by C0278/11 or C0279/12 first.

PROCEDURE

1. INSPECT BRAKE ACTUATOR ASSEMBLY





(a) Disconnect the brake actuator connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE BRAKE ACTUATOR ASSEMBLY
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BRAKE ACTUATOR ASSEMBLY)





(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. RECONFIRM DTC
(a) Reconnect the skid control ECU connector and the brake actuator connector.
(b) Clear the DTC Vehicle Stability Control System (w/ VDIM).
(c) Start the engine.
(d) Check if the same DTC is recorded Vehicle Stability Control System (w/ VDIM).
Result:






HINT:
- If the normal system code is output (the trouble code is not output), slightly jiggle the connectors, wire harness, and fuses of the skid control ECU and brake actuator assembly. Make sure that no DTCs are output.
- If any DTCs are output while jiggling a connector or wire harness of the skid control ECU and brake actuator assembly, inspect and repair the connector or wire harness.

B -- REPLACE SKID CONTROL ECU
A -- USE SIMULATION METHOD TO CHECK