Pressure Sensor System Inspection: Notes

FRONT PRESSURE INSPECTION PROCEDURE

1. DISPLAY SELF DIAGNOSIS RESULTS 

   Check self-diagnosis result display item.

   PRESSURE SENSOR SYSTEM - SELF-DIAGNOSIS RESULTS
   
   

   Self-diagnosis results
   PRESS SENSE CIRCUIT

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

   YES or NO 

   1. YES: GO TO 2.
   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 

   1. OK: GO TO 3.
   2. 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.
      Fig 1: ABS Actuator And Electric Unit Connector E125 And Front Pressure Sensor Connector E31 Continuity Specifications

      Courtesy of NISSAN MOTOR CO., U.S.A.
   2. Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125 and body ground.
      Fig 2: ABS Actuator And Electric Unit Connector E125 And Body Ground Continuity Specifications

      Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG 

   1. OK: GO TO 4.
   2. 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.
      Fig 3: Identifying "PRESS SENSOR"

      Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG 

   1. OK: Inspection End.
   2. NG: Replace pressure sensor.