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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R Spec V >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 1404 (Brake Control System) >> Trouble Diagnosis >> Inspection 6: Yaw Rate/Side G Sensor (2WD Model), Yaw Rate/Side/Decel G sensor (AWD Models) Circuit >> Inspection Procedure
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Inspection Procedure

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK SELF-DIAGNOSTIC RESULTS 

    Check the self-diagnostic results.

    Self-diagnostic results

    YAW RATE SENSOR

    SIDE G-SEN CIRCUIT

    G-SENSOR (AWD model)

    CAUTION: When on a turntable, such as at a parking structure entrance, or when on a moving object with engine running, VDC OFF indicator lamp might turn on and self-diagnosis using CONSULT-II the yaw rate sensor system might be displayed, but in this case there is no malfunction in yaw rate sensor circuit. As soon as vehicle leaves turntable or moving object, restart engine to return the system to normal.

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

    1. YES: GO TO 2.
    2. NO: INSPECTION END
  2. CHECK CONNECTOR 
    1. Disconnect G sensor connector and ABS actuator and electric unit (control unit) connector and check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
    2. Reconnect connectors and perform a ABS actuator and electric unit (control unit) self-diagnosis again.

    OK or NG 

    1. OK: Connector terminal contact is loose, damaged, open or shorted.
    2. NG: GO TO 3.
  3. CHECK G SENSOR HARNESS 
    1. Turn ignition switch OFF and disconnect G sensor connector and ABS actuator and electric unit (control unit) connector.
    2. Check continuity between ABS actuator and electric unit (control unit) harness connector E56 and G sensor harness connector M79 (2WD model) or M71 (AWD model).
      Fig 1: Checking G Sensor Harness
      G02368377Courtesy of NISSAN MOTOR CO., U.S.A.
      G SENSOR CONTINUITY CHART

      ABS actuator and electric unit (control unit) (Harness connector E56) G sensor (Harness connector M79 or M71) Continuity
      6 (Y)  3 (Y/B)  Yes 
      24 (B)  5 (B/Y)  Yes 
      25 (R/Y)  1 (R/Y)  Yes 
      29 (R/G)  2 (R/G)  Yes 

    OK or NG 

    1. OK: GO TO 4.
    2. NG: If the open or short in harness, repair or replace harness.
  4. CHECK G SENSOR 
    1. Connect G sensor connector and ABS actuator and electric unit (control unit) connector.
    2. Use CONSULT-II "DATA MONITOR" to check if G sensor are normal.
      YAW RATE SENSOR (DATA MONITOR STANDARD)

      Vehicle status Yaw rate sensor (Data monitor standard) Side G sensor (Data monitor standard) Decel G sensor (Data monitor standard) (AWD model)
      When stopped  -4 to +4 deg/s  -1.1 to +1.1 m/s 2  -0.11 to +0.11 G 
      Right turn  Negative value  Negative value  - 
      Left turn  Positive value  Positive value  - 
      Speed up  -  -  Negative value 
      Speed down  -  -  Positive value 

    OK or NG 

    1. OK: Perform ABS actuator and electric unit (control unit) self-diagnosis again.
    2. NG: Replace malfunctioning G sensor, and then perform self-diagnosis for ABS actuator and electric unit (control unit) again.
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