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

WARNING: This page is about a different car, the 2004 Nissan Quest. 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 + (P/L) and ground.
Battery voltage should exist.

OK or NG
1. OK: GO TO 2.
2. NG: GO TO 3 .
  
  Fig 1: Checking Voltage Between Oil Pressure Switch Harness Connector F106 Terminal + (P/L) And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK OIL PRESSURE SWITCH
1. Turn ignition switch OFF.
2. Check oil pressure switch. Refer to OIL PRESSURE SWITCH .
  OK or NG
  1. OK: Replace the IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".
  2. NG: Replace the oil pressure switch.
CHECK OIL PRESSURE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector E121 terminal 57 (P/L) and ground.
  1. Continuity should not exist.
  OK or NG
  1. OK: Replace the IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".
  2. NG: Repair harness or connector.
    
    Fig 2: Checking Continuity Between IPDM E/R Harness Connector E121 Terminal 57 (P/L) And Ground
    Courtesy of NISSAN MOTOR CO., U.S.A.