Code No. C1226 FR inlet valve
Code No. C1231 FR outlet valve
Code No. C1236 FL inlet valve
Code No. C1241 FL outlet valve
Code No. C1246 RR inlet valve
Code No. C1251 RR outlet valve
Code No. C1256 RL inlet valve
Code No. C1261 RL outlet valve
Code No. C1300 FR cut valve
Code No. C1305 FR suction valve
Code No. C1310 FL cut valve
Code No. C1315 FL suction valve

caution

If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
Whenever ECU is replaced, ensure that the CAN bus lines are normal.
When the hydraulic unit (integrated with ASC-ECU) is replaced, always carry out the calibration of the steering wheel sensor, the G and yaw rate sensor and brake fluid pressure sensor (Refer to and ).

OPERATION

The ASC-ECU contains the power supply circuit (+BV terminal) for the solenoid valve. The solenoid valve is energised by the valve relay, which is incorporated in the ASC-ECU.
The valve relay, which is incorporated in the ASC-ECU, is always ON except for during the initial check at ignition switch is turned "ON" as well as for during the system check that is periodically repeated. While the system is active, the power is supplied to the solenoid valve at all times.
ASC-ECU activates the solenoid valve by turning on its driving transistor.

These diagnosis codes will be set under the cases below.
Code No. C1226, C1231, C1236, C1241, C1246, C1251, C1256 and C1261

These codes are set when the ASC-ECU drive signal does not match the feed back signal from the solenoid valve.

Code No. C1300, C1305, C1310 and C1315