Oil Pressure Sensor Inspection

1. Turn ignition switch ON.
2. Check voltage between double meter harness connector M89 terminal 4 and ground.
   VOLTAGE REFERENCE CHART
   
   

   Terminals			Condition	Voltage (Approx.)
   (+)		(-)
   Connector	Terminal
   M89	4	Ground	When ignition switch is in ON position. (Engine stopped.)	0.5V
   			Engine running. [When the oil pressure is 60 psi (4.22 kg/cm2 )]	2.5V

   Fig 1: Checking Voltage Between Double Meter Harness Connector M89 Terminal 4 And Ground

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

   OK or NG 

   OK: Replace double meter. Refer to "REMOVAL AND INSTALLATION ".

   NG: GO TO 2.

Check voltage between double meter harness connector M89 terminal 3 and ground.

Approx. 5.5V 

OK or NG 

OK: GO TO 3.

NG: Check oil pressure sensor power supply circuit for short to ground. If OK then replace double meter. Refer to "REMOVAL AND INSTALLATION ".

Fig 2: Checking Voltage Between Double Meter Harness Connector M89 Terminal 3 And Ground

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

1. Turn ignition switch OFF.
2. Disconnect double meter and oil pressure sensor connectors.
3. Check continuity between double meter harness connector M89 (A) terminal 3 and oil pressure sensor harness connector F32 (B) terminal 3.

   Continuity should exist. 

   OK or NG 

   OK: GO TO 4.

   NG: Repair harness or connector between double meter and oil pressure sensor.

   Fig 3: Checking Continuity Between Double Meter Connector M89 Terminal 3 And Oil Pressure Sensor Connector F32 Terminal 3

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

1. Check continuity between double meter harness connector M89 (B) terminal 4 and oil pressure sensor harness connector F32 (A) terminal 2.

   Continuity should exist. 

2. Check continuity between double meter harness connector M89 (B) terminal 4 and ground.

   Continuity should not exist. 

   Fig 4: Checking Continuity Between Double Meter And Oil Pressure Sensor Harness Connector Terminals

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

   OK or NG 

   OK: GO TO 5.

   NG: Repair harness or connector between double meter and oil pressure sensor.

Check continuity between double meter harness connector M89 (A) terminal 5 and oil pressure sensor harness connector F32 (B) terminal 1.

Continuity should exist. 

OK or NG 

OK: Replace double meter (oil pressure gauge does not move).

OK: Replace oil pressure sensor (oil pressure gauge moves but reads incorrectly).

NG: Repair harness or connector between double meter and oil pressure sensor.

Fig 5: Checking Continuity Between Double Meter Harness Connector M89 Terminal 5 And Oil Pressure Sensor Harness Connector F32 Terminal 1

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