C1155

C1155 BRAKE FLUID LEVEL SWITCH

Description

Brake fluid level switch contacts close when brake fluid level is low. This is detected by the combination meter which sends the status of fluid level to the VDC unit via the CAN bus.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always turn the ignition switch OFF
and wait at least 10 seconds before conducting the next test.
- GO TO 2.

2. DTC REPRODUCTION PROCEDURE

1.Turn the ignition switch OFF to ON.
2.Perform self-diagnosis for "ABS" with CONSULT.
Is DTC "C1155" detected?
YES- Proceed to diagnosis procedure. .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK BRAKE FLUID LEVEL

1.Turn the ignition switch OFF.
2.Check the brake fluid level. Removal and Replacement.
Is the inspection result normal?
YES- GO TO 2.
NO- Refill the brake fluid. Refilling.

2. PERFORM SELF-DIAGNOSIS (1)

1.Erase self-diagnosis result for "ABS" with CONSULT.
2.Turn the ignition switch OFF, and wait 10 seconds or more.
3.Turn the ignition switch ON.

CAUTION:
Never start the engine.
4.Perform self-diagnosis for "ABS" with CONSULT.
Is DTC "C1155" detected?
YES- INSPECTION END
NO- GO TO 3.

3. CHECK BRAKE FLUID LEVEL SWITCH

Check brake fluid level switch. .
Is the inspection result normal?
YES- GO TO 5.
NO- Replace reservoir tank. Exploded View. GO TO 4.

4. PERFORM SELF-DIAGNOSIS (2)

1.Erase self-diagnosis result for "ABS" with CONSULT.
2.Turn the ignition switch OFF, and wait 10 seconds or more.
3.Turn the ignition switch ON.

CAUTION:
Never start the engine.
4.Perform self-diagnosis for "ABS" with CONSULT.
Is DTC "C1155" detected?
YES- INSPECTION END
NO- GO TO 5.

5. CHECK CONNECTOR AND TERMINAL

1.Turn the ignition switch OFF.
2.Disconnect brake fluid level switch harness connector.
3.Check brake fluid level switch harness connector for disconnection or looseness.
4.Check brake fluid level switch pin terminals for damage or loose connection with harness connector.
5.Disconnect combination meter harness connector.
6.Check combination meter harness connector for disconnection or looseness.
7.Check combination meter pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace error-detected parts. GO TO 6.

6. PERFORM SELF-DIAGNOSIS (3)

1.Connect brake fluid level switch harness connector.
2.Connect combination meter harness connector.
3.Erase self-diagnosis result for "ABS" with CONSULT.
4.Turn the ignition switch OFF, and wait 10 seconds or more.
5.Turn the ignition switch ON.

CAUTION:
Never start the engine.
6.Perform self-diagnosis for "ABS" with CONSULT.
Is DTC "C1155" detected?
YES- INSPECTION END
NO- GO TO 7.

7. CHECK BRAKE FLUID LEVEL SWITCH CIRCUIT

1.Turn the ignition switch OFF.
2.Disconnect brake fluid level switch harness connector.
3.Disconnect ABS actuator and electric unit (control unit) harness connector.
4.Disconnect combination meter harness connector.
5.Check the continuity between brake fluid level switch harness connector and combination meter harness connector.





6.Check the continuity between brake fluid level switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace error-detected parts.

8. CHECK BRAKE FLUID LEVEL SWITCH GROUND

Check the continuity between brake fluid level switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 9.
NO- Repair or replace error-detected parts.

9. CHECK COMBINATION METER

Check combination meter. Combination Meter.
Is the inspection result normal?
YES- Replace ABS actuator and electric unit (control unit). VDC/TCS/ABS.
NO- Repair or replace combination meter. Exploded View.


Component Inspection


1. CHECK BRAKE FLUID LEVEL SWITCH

1.Turn the ignition switch OFF.
2.Disconnect brake fluid level switch connector.
3.Check continuity between brake fluid level switch connector terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace reservoir tank. Exploded View.


Special Repair Requirement


1. ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Refer to BRC76, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement".
- END