Oil Pressure Sensor Inspection

CHECK OIL PRESSURE SENSOR SIGNAL

Turn ignition switch ON.

Check voltage between double meter harness connector M89 terminal 4 and ground.

CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Terminals			Condition	Voltage (Approx.)
(+)		(-)
Connector	Terminal	(-)
M89	4	Ground	When ignition switch is in ON position. (Engine stopped.)	0.5V
M89	4	Ground	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 OIL PRESSURE SENSOR POWER SUPPLY
Check voltage between double meter harness connector M89 terminal 3 and ground.

Approx. 5.5V

Fig 2: Checking Voltage Between Double Meter Harness Connector M89 Terminal 3 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.

NG: Replace double meter. Refer to "REMOVAL AND INSTALLATION ".
CHECK OIL PRESSURE SENSOR POWER SUPPLY CIRCUIT
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.
  
  Fig 3: Checking Continuity Between Double Meter Harness Connector M89 Terminal 3 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between double meter harness connector M89 (A) terminal 3 and ground.
  Continuity should not exist.
OK or NG

OK: GO TO 4.

NG: Repair harness or connector between double meter and oil pressure sensor.
CHECK OIL PRESSURE SENSOR SIGNAL CIRCUIT
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 Harness Connector M89 Terminal 4 And Ground
  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 OIL PRESSURE SENSOR GROUND CIRCUIT
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 oil pressure sensor.

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

Fig 5: Checking Continuity Between Double Meter Connector M89 Terminal 5 And Oil Pressure Sensor Connector F32 Terminal 1
Courtesy of NISSAN MOTOR CO., U.S.A.