ABS

DTC C1111 PUMP MOTOR





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 ABS.
NO - Inspection End.




Diagnosis Procedure
Regarding Wiring Diagram information, refer to ABS.
1.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals.
4. Reconnect connector and perform self-diagnosis. Refer to ABS.
Is the inspection result normal?
YES - Inspection End.
NO - GO TO 2
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) connector E26 terminal 2 and ground.





Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace malfunctioning components.
- Perform the self-diagnosis, and make sure that the result shows "NO DTC IS DETECTED".
3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT





Check continuity between ABS actuator and electric unit (control unit) connector E26 terminals 1, 4 and ground.





Is the inspection result normal?
YES - Replace ABS actuator and electric unit (control unit). Refer to Removal And Installation.
- Perform the self-diagnosis, and make sure that the result shows "NO DTC IS DETECTED".
NO - Repair or replace malfunctioning components.
- Perform the self-diagnosis, and make sure that the result shows "NO DTC IS DETECTED".




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 ABS.