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Engine Oil Pressure Signal Inspection

WARNING: This page is about a different car, the 2005 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK OIL PRESSURE SENSOR SIGNAL 
    1. Turn ignition switch ON.
    2. Check voltage between combination meter harness connector M24 terminal 20 (Y) and ground.
      Fig 1: Checking Voltage Between Combination Meter Harness Connector M24 Terminal 20 (Y) And Ground
      G03604995Courtesy of NISSAN MOTOR CO., U.S.A.
      VOLTAGE BETWEEN COMBINATION METER HARNESS CONNECTOR M24 TERMINAL 20 (Y) AND GROUND REFERENCE

      Terminals Condition Voltage (V)
      (+) (-)
      Connector Terminal (Wire color)
      M24 20 (Y) Ground When ignition switch is in ON position. (Engine stopped.) Yes
      Engine running. (Idle speed) Yes

    OK or NG 

    1. OK: Replace combination meter. Refer to "COMBINATION METER ".
    2. NG: GO TO 2.
  2. CHECK OIL PRESSURE SENSOR SIGNAL 
    1. Turn ignition switch OFF.
    2. Disconnect oil pressure sensor connector F4.
    3. Turn ignition switch ON.
    4. Check voltage between combination meter harness connector M24 terminal 22 (GR/L) and ground.

      Voltage: Approx. 5V 

      5. Fig 2: Checking Voltage Between Combination Meter Harness Connector M24 Terminal 22 (GR/L) And Ground
      G03604996Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 3.
    2. NG: Replace combination meter. Refer to "COMBINATION METER ".
  3. CHECK OIL PRESSURE SENSOR POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect combination connector M24.
    3. Check continuity between combination meter harness connector M24 terminal 22 (GR/L) and oil pressure sensor harness connector F4 terminal 1 (GR/L).

      Continuity should exist  .

    4. Check continuity between combination meter harness connector M24 terminal 22 (GR/L) and ground.

      Continuity should not exist  .

      5. Fig 3: Checking Continuity Between Combination Meter Harness Connector M24 Terminal 22 And Oil Pressure Sensor Harness Connector F4 Terminal 1 And Ground
      G03604997Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 4.
    2. NG: Repair harness or connector.
  4. CHECK OIL PRESSURE SENSOR SIGNAL CIRCUIT 
    1. Check continuity between combination meter harness connector M24 terminal 20 (Y) and oil pressure sensor harness connector F4 terminal 2 (Y).

      Continuity should exist  .

    2. Check continuity between combination meter harness connector M24 terminal 20 (Y) and ground.

      Continuity should not exist  .

      3. Fig 4: Checking Continuity Between Combination Meter Harness Connector M24 Terminal 20 And Oil Pressure Sensor Harness Connector F4 Terminal 2 And Ground
      G03604998Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Repair harness or connector.
  5. CHECK OIL PRESSURE SENSOR GROUND CIRCUIT 

    Check continuity between combination meter harness connector M24 terminal 16 (B/P) and oil pressure sensor harness connector F4 terminal 3 (B/P).

    Fig 5: Checking Continuity Between Combination Meter Harness Connector M24 Terminal 16 And Oil Pressure Sensor Harness Connector F4 Terminal 3
    G03604999Courtesy of NISSAN MOTOR CO., U.S.A.

    Continuity should exist  .

    OK or NG 

    1. OK: Replace oil pressure sensor.
    2. NG: Repair harness or connector.
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