C1111

C1111 ABS MOTOR, MOTOR RELAY SYSTEM





Description

PUMP
The pump returns the brake fluid stored in the reservoir to the master cylinder by reducing the pressure.

MOTOR
The motor drives the pump according to the signals transmitted by the ABS actuator and electric unit (control unit).




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.





Is above displayed on the self-diagnosis display?
YES - Proceed to diagnosis procedure. Refer to C1111.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnect, looseness, and so on. If any malfunction is found, repair or replace terminal.
4. Reconnect connectors and then perform the self-diagnosis.
Is any item indicated on the self-diagnosis display?
YES - GO TO 2.
NO - Poor connection of connector terminal. Repair or replace connector.
2.CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check voltage between the ABS actuator and electric unit (control unit) harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace malfunctioning components.
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) harness connector terminals and ground.





Is the inspection result normal?
YES - Replace ABS actuator and electric unit (control unit).
NO - Repair or replace malfunctioning components.




Component Inspection
1.CHECK ACTIVE TEST
1. On "ACTIVE TEST", select "ABS MOTOR".
2. Touch "On" and "Off" on screen. Make sure motor relay and actuator relay operates as shown in table below.





Is the inspection result normal?
YES - INSPECTION END
NO - Go to diagnosis procedure. Refer to C1111.




Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the "ST ANGLE SENSOR ADJUSTMENT" in "WORK SUPPORT", when replacing the ABS actuator and electric unit (control unit).
- END