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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1878 (Brake Control System) >> HDC/Has/VDC/TCS/Abs >> Trouble Diagnosis For Self-Diagnostic Items >> Pressure Sensor System Inspection >> Front Pressure Inspection Procedure

Front Pressure Inspection Procedure

WARNING: This page is about a different car, the 2006 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
  1. DISPLAY SELF DIAGNOSIS RESULTS 

    Check self-diagnosis result display item.

    SELF-DIAGNOSIS RESULT

    Self-diagnosis results
    PRESS SEN CIRCUIT

    Is the self-diagnosis result display item shown above displayed? 

    YES: GO TO 2.

    NO: Inspection End.

  2. CONNECTOR INSPECTION 
    1. Turn the ignition switch OFF.
    2. Disconnect the front pressure sensor connector E31 and ABS actuator and electric unit (control unit) connector E125 and inspect the terminals for deformation, disconnection, looseness, or damage.

    OK or NG 

    OK: GO TO 3.

    NG: Repair connector.

  3. FRONT PRESSURE SENSOR CIRCUIT INSPECTION 
    1. Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125 and front pressure sensor harness connector E31.
      CONTINUITY REFERENCE CHART

      ABS actuator and electric unit (control unit) harness connector E125 Front pressure sensor harness connector E31 Continuity
      18 3 Yes
      19 1
      20 2
    2. Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125 and body ground.
    CONTINUITY REFERENCE CHART

    ABS actuator and electric unit (control unit) harness connector E125 Body ground Continuity
    18 - No
    19
    20

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace harness or connector.

  4. FRONT PRESSURE SENSOR INSPECTION 
    1. Reconnect the front pressure sensor and ABS actuator and electric unit (control unit) connectors.
    2. Use "DATA MONITOR" to check if the status of "PRESS SENSOR" is normal.
    DATA MONITOR DISPLAY

    Condition Data monitor display (Approx.)
    PRESS SENSOR
    When brake pedal is depressed Positive value
    When brake pedal is released 0 bar

    OK or NG 

    OK: Inspection End.

    NG: Replace front pressure sensor.