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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2080 (Brake Control System) >> Service Information >> Trouble Diagnosis For Self-Diagnostic Items >> Brake Fluid Level Switch System Inspection >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  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.

      Self-diagnosis results

      BR FLUID LEVEL LOW

    Is the above displayed in the self-diagnosis display items? 

    YES: GO TO 2.

    NO: Inspection End.

  2. CONNECTOR INSPECTION 
    1. Turn the ignition switch OFF and disconnect the ABS actuator and electric unit (control unit) connector E125 and brake fluid level switch connector E21.
    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 THE HARNESS BETWEEN THE BRAKE FLUID LEVEL SWITCH AND THE ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) 

    Check the continuity between the brake fluid level switch connector E21 and the ABS actuator and electric unit (control unit) connector E125.

    ABS ACTUATOR AND ELECTRIC UNIT SPECIFICATION

    ABS actuator and electric unit (control unit) connector E125 Brake fluid level switch connector E21 Continuity
    38 + Continuity should exist.
    38 Ground Continuity should not exist.
    Ground - Continuity should exist.

    OK or NG 

    OK: GO TO 4.

    NG: Repair the circuit.

  4. CHECK BRAKE FLUID LEVEL SWITCH 

    Check continuity between brake fluid level switch terminals + and -.

    Continuity should not exist  .

    OK or NG 

    OK: Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control unit). Refer to "REMOVAL AND INSTALLATION ".

    NG: Replace brake fluid level switch.