ABS

C1121, C1123, C1125, C1127 OUT ABS SOL





Description
The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper 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
Perform self-diagnosis for "ABS" with CONSULT-III.





Is above displayed on the self-diagnosis display?
YES - Proceed to diagnosis procedure. VDC/TCS/ABS.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK SENSOR AND SENSOR ROTOR
- Check that there is no damage or adherence of foreign matter on the sensor rotor surface.
- Check sensor rotor for damage.
- Check wheel sensor for damage, disconnection or looseness.
- Check that there is no deformation on the wheel sensor mounting surface.
Are the sensor and sensor rotor normal?
YES - GO TO 2.
NO - Repair wheel sensor mount or replace sensor rotor. Then perform self-diagnosis for "ABS" with
CONSULT-III.
2.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
4. Reconnect connector and then perform self-diagnosis for "ABS" with CONSULT-III.
Is any item indicated on the self-diagnosis display?
YES - GO TO 3.
NO - Poor connection of connector terminal. Replace or repair connector.
3.CHECK ACTUATOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Check voltage between ABS actuator and electric unit (control unit) harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace malfunctioning components.
4.CHECK ACTUATOR RELAY 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. Select "ABS", "ACTIVE TEST" and each test item in order with CONSULT-III.
2. On the display, select "Up", "Keep" and "Down", and check that the system operates as shown in the table below.





Is the inspection result normal?
YES - INSPECTION END
NO - Go to diagnosis procedure. VDC/TCS/ABS.