C1227

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1225-C1228, C1468, C1469, C146A, C146B; SA1 Solenoid Circuit; 2013 MY FR-S [03/2012 -]
C1225 - SA1 Solenoid Circuit
C1226 - SA2 Solenoid Circuit
C1227 - SA3 Solenoid Circuit
C1228 - STR Solenoid Circuit
C1468 - SFR Solenoid Circuit
C1469 - SFL Solenoid Circuit
C146A - SRR Solenoid Circuit
C146B - SRL 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

Refer to DTC C146E C146E.

INSPECTION PROCEDURE

NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform VSC sensor neutral memorization Programming and Relearning.

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 is output before replacing the brake actuator assembly.

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

(b) Turn the ignition switch off.

(c) Start the engine.

(d) Drive the vehicle at a speed of 20 km/h (12 mph) or more.

(e) Check if the same DTC is output Reading and Clearing Diagnostic Trouble Codes.

Result:





HINT
* The skid control ECU performs self diagnosis of the solenoid circuit after the ignition switch turned to ON.
* If the normal system code is output (No DTCs are output), slightly jiggle the connectors, wire harness, and fuses of the brake actuator assembly.
* If any DTCs are output while jiggling a connector or wire harness of the skid control ECU (brake actuator assembly), inspect and repair the connector or wire harness.
* If no DTCs were output when reconfirming DTCs, checking for intermittent problems is necessary because it is suspected that the original DTCs were stored due to the poor connection of a connector terminal.

B -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal

A -- CHECK FOR INTERMITTENT PROBLEMS