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Inspection 4 Pressure Sensor System

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

INSPECTION PROCEDURE

  1. SELF-DIAGNOSIS RESULT CHECK 

    Check self-diagnosis results.

    Self-diagnosis results

    PRESS SEN SYSTEM

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

    1. YES : GO TO 2.
    2. NO : Inspection End
  2. CONNECTOR INSPECTION 
    1. Disconnect pressure sensor connector E50 and VDC/TCS/ABS control unit connector, check the terminals for deformation, disconnection, looseness, and so on. If there is an error, repair or replace the terminal.
    2. Reconnect the connectors and Re-conduct VDC/TCS/ABS control unit self-diagnosis.

    OK or NG 

    1. OK : The connector terminal contact is loose, damaged, open or shorted.
    2. NG : GO TO 3.
  3. PRESSURE SENSOR HARNESS INSPECTION 
    1. Turn ignition switch OFF and disconnect Pressure sensor connector E50 and VDC/TCS/ABS control unit connector.
    2. Check the continuity between VDC/TCS/ABS control unit connector and pressure sensor connector.
      Fig 1: Checking Continuity Between VDC/TCS/ABS Control Unit Connector & VCD Actuator Pressure Sensor Connector
      G02409053Courtesy of NISSAN MOTOR CO., U.S.A.
      CONTINUITY REFERENCE DATA - VDC/TCS/ABS CONTROL UNIT CONNECTOR & VCD ACTUATOR PRESSURE SENSOR CONNECTOR

      VDC/TCS/ABS control unit (Harness connector E118)  Pressure sensor (Harness connector E50)  Continuity 
      69 (P/B)  30 (P/B)  Continuity should exist. 
      68 (S/B)  31 (S/B)  Continuity should exist. 
      67 (G/B)  32 (G/B)  Continuity should exist. 

    OK or NG 

    1. OK : GO TO 4.
    2. NG : If the open or short in harness, repair or replace the harness.
  4. PRESSURE SENSOR INSPECTION 
    1. Connect pressure sensor and VDC/TCS/ABS control unit connectors.
    2. Use "Data Monitor" to check the pressure sensor value.
      BRAKE PEDAL CONDITION AND DATA MONITOR DISPLAY

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

    OK or NG 

    1. OK : Inspection End
    2. NG : If the pressure sensor is damaged or malfunctioning, replace the VDC actuator (pressure sensor it built in).
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