Oil Pressure Warning Lamp Does Not Turn Off (Oil Pressure Is Normal)

WARNING: This page is about a different car, the 2007 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For oil pressure inspection, refer to "OIL PRESSURE CHECK ".

CHECK IPDM E/R OUTPUT SIGNAL
1. Disconnect oil pressure switch connector.
2. Turn ignition switch ON.
3. Check voltage between oil pressure switch harness connector F106 terminal 1 and ground.
  
  Fig 1: Checking Voltage Between Oil Pressure Switch Connector F106 Terminal 1 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Battery voltage should exist.
OK or NG

OK: GO TO 2.

NG: GO TO 3.
CHECK OIL PRESSURE SWITCH
1. Turn ignition switch OFF.
2. Check oil pressure switch. Refer to "OIL PRESSURE SWITCH ".
OK or NG

OK: Replace the IPDM E/R, refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".

NG: Replace the oil pressure switch.
CHECK OIL PRESSURE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector E121.
3. Check continuity between IPDM E/R harness connector E121 terminal 57 and ground.
  
  Fig 2: Checking Continuity Between IPDM E/R Connector E121 Terminal 57 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Continuity should not exist.
OK or NG

OK: Replace the IPDM E/R, refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".

NG: Repair harness or connector.