C1190

C1120, C1122, C1190 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 Confirmation Procedure

1. PERFORM DTC CHECK

Perform "DTC check".






Is above displayed on "DTC check" display?
YES
Proceed to diagnosis procedure. Refer to "Diagnosis Procedure".
NO
Inspection End

Diagnosis Procedure

Regarding Wiring Diagram information, refer to [ABS: Wiring Diagram] Electrical Diagrams.

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 connectors and then perform "DTC check". Refer to [SDT Function (ABS / ESP(R))] SDT Function (ABS / ESP).

Is any item indicated on "DTC check" display?
YES
GO TO 2
NO
Poor connection of connector terminals. Repair or replace connector.

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 E125 terminal 32 and ground.






Is the inspection result normal?
YES
GO TO 3
NO
Repair or replace malfunctioning components.

3. CHECK SOLENOID AND ACTUATOR RELAY GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (control unit) connector E125 terminals 16, 47 and ground.











Is the inspection result normal?
YES
Replace ABS actuator and electric unit (control unit). Refer to [Actuator and Electric Unit (Assembly): Removal and Installation].
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.






*: On for 1 to 2 seconds after the touch, and then Off

Is the inspection result normal?
YES
Inspection End
NO
Go to diagnosis procedure. Refer to [C1120, C1122, C1190 in ABS SOL].