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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1512 (Brake Control System) >> VDC/TCS/Abs >> Trouble Diagnosis For Self-Diagnostic Items >> Yaw Rate/Side/Decel G Sensor System Inspection >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. SELF-DIAGNOSIS RESULT CHECK 

    Check self-diagnosis results.

    SELF-DIAGNOSIS RESULTS TABLE

    Self-diagnosis results
    YAW RATE SENSOR
    LONGITUDINAL G-SENSOR
    LATERAL G-SENSOR
    CAUTION: If vehicle is on turntable at entrance to parking garage, or on other moving surface, VDC OFF indicator lamp may illuminate and CONSULT-II self-diagnosis may indicate yaw rate sensor system malfunction.
    However, in this case there is no malfunction in yaw rate sensor system. Take vehicle off turntable or other moving surface, and start engine. Results will return to normal.

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

    • YES: GO TO 2.
    • NO: Inspection End.
  2. CONNECTOR INSPECTION 

    Disconnect the ABS actuator and electric unit (control unit) connector E125 and yaw rate/side/decel G sensor connector B125.

    Check the terminals for deformation, disconnection, looseness or damage.

    OK or NG

    • OK: GO TO 3.
    • NG: Repair or replace as necessary.
  3. YAW RATE/SIDE/DECEL G SENSOR HARNESS INSPECTION 
    1. Turn ignition switch OFF and disconnect yaw rate/side/decel G sensor connector B125 and ABS actuator and electric unit (control unit) connector E125.
    2. Check the continuity between the ABS actuator and electric unit (control unit) connector E125 and the yaw rate/side/decel G sensor connector B125.
      Fig 1: Continuity Chart
      G02447777Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    • OK: GO TO 4.
    • NG: Repair or replace as necessary.
  4. YAW RATE/SIDE/DECEL G SENSOR INSPECTION 
    1. Connect the yaw rate/side/decel G sensor connector B125 and ABS actuator and electric unit (control unit) connector E125.
    2. Use "Data Monitor" to check if the yaw rate/side/decel G sensor signals are normal.
      VEHICLE STATUS TABLE

      Vehicle status YAW RATE SEN (Data monitor standard) SIDE G-SENSOR (Data monitor standard) DECEL G-SEN (Data monitor standard)
      When stopped -4 to +4 deg/s -1.1 to+1.1 m/s2 -0.11 G 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

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