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
Check the self-diagnosis results.





Is above displayed on the self-diagnosis display?
YES - Proceed to diagnosis procedure. Refer to C1121.
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 SOLENOID 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) connector E26 terminal 3 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 SOLENOID AND ACTUATOR RELAY GROUND CIRCUIT





Check continuity between ABS actuator and electric unit (control unit) connector E26 terminal 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. 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.

NOTE:
The example below is for front right wheel. The procedure for the other wheels is the same as given below.






NOTE:
A brief moment of ON/OFF condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is an operation for checking.

Is the inspection result normal?
YES - Inspection End.
NO - Go to diagnosis procedure. Refer to C1121.