C1226

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for BOSCH Made): C1225/25-C1228/28: SMC Solenoid Circuit
C1228/28 - SRC 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

PROCEDURE

1. RECONFIRM DTC

HINT
These codes are detected when a problem is identified in the brake actuator assembly.

The solenoid circuits are located in the brake actuator assembly.

Therefore, solenoid circuit inspection and solenoid unit inspection cannot be performed. Be sure to check if the DTC is output before replacing the brake actuator assembly.

(a) Clear the DTC Vehicle Stability Control System (for BOSCH Made).

(b) Start the engine.

(c) Drive the vehicle at a speed of 12 mph (20 km/h) or more for 30 seconds or more.

(d) Check if the same DTC is recorded Vehicle Stability Control System (for BOSCH Made).

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 brake actuator assembly (skid control ECU). 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.
* It is suspected that the DTCs were output due to a bad connection of the connector terminal.

B -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal

A -- END