Brake Fluid Level Sensor/Switch: Testing and Inspection

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

Brake Fluid Level Switch System Inspection


1. SELF-DIAGNOSIS RESULT CHECK

1.Check the brake reservoir tank fluid level. If the level is low, add brake fluid.
2.Erase the self-diagnosis results and check the self-diagnosis results.





Is the above displayed in the self-diagnosis display items?
YES- GO TO 2.
NO- Inspection End.

2. CONNECTOR INSPECTION

1.Disconnect the ABS actuator and electric unit (control unit) and brake fluid level switch connectors.
2.Check the terminals for deformation, disconnection, looseness or damage.
OK or NG
OK- GO TO 3.
NG- Repair or replace as necessary.

3. CHECK BRAKE FLUID LEVEL SWITCH






1.Turn ignition switch OFF.
2.Check continuity between brake fluid level switch terminals 1
and 2.





Is the inspection result normal?
YES- GO TO 4
NO- Replace brake fluid level switch.

4. CHECK BRAKE FLUID LEVEL SWITCH HARNESS






1.Disconnect combination meter connector.
2.Check continuity between combination meter connector M24 (A)
terminal 11 and brake fluid level switch connector E40 (B) terminal 1.
11 - 1: Continuity should exist.
3.Check continuity between combination meter connector M24 (A)
terminal 11 and ground.
11 - Ground: Continuity should not exist.
Is the inspection result normal?
YES- GO TO 5
NO- Repair or replace malfunctioning components.

5. CHECK BRAKE FLUID LEVEL SWITCH GROUND CIRCUIT






Check continuity between brake fluid level switch connector E40 terminal 2 and ground.
2 - Ground: Continuity should exist.
Is the inspection result normal?
YES- Inspection End.
NO- - Repair or replace malfunctioning components.
- Perform the self-diagnosis, and make sure that the result shows "NO DTC IS DETECTED".