C1120

C1120, C1122, C1124, C1126 IN 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 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 C1120.
NO - Inspection End




Diagnosis Procedure
INSPECTION PROCEDURE
1.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 connectors and then perform the self-diagnosis. Refer to Scan Tool Testing and Procedures.
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 SOLENOID, VDC SWITCH-OVER VALVE AND 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 3
NO - Repair or replace malfunctioning components.
3.CHECK SOLENOID, VDC SWITCH-OVER VALVE AND 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). Refer to Service and Repair.
NO - Repair or replace malfunctioning components.




Component Inspection
1.CHECK ACTIVE TEST
1. Select each test menu item on "ACTIVE TEST".
2. On the display, touch "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. Refer to C1120.




Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator and electric unit (control unit). Refer to Description Special Repair Requirement Description Special Repair Requirement, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
POSITION : Description".
>> GO TO 2
2.CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit). Refer to Description.
>> END