Oil Pressure Warning Lamp Stays Off (Ignition Switch ON)

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.

CHECK SELF-DIAGNOSTIC RESULTS OF UNIFIED METER AND A/C AMP.
1. Start engine.
2. Select "METER A/C AMP" on CONSULT-II, and perform self-diagnosis of unified meter and A/C amp. Refer to "CONSULT-II FUNCTION (METER A/C AMP) ".
3. After erasing the self-diagnostic results, perform self-diagnosis again.
Self-diagnostic results content

No malfunction detected: GO TO 2.

Malfunction detected: Go to "DISPLAY ITEM LIST ".
CHECK IPDM E/R OUTPUT SIGNAL
Activate IPDM E/R auto active test. Refer to "AUTO ACTIVE TEST ".

Is oil pressure warning lamp blinking?

YES: GO TO 5.

NO: GO TO 3.
CHECK BCM INPUT SIGNAL
Select "DATA MONITOR" of "SIGNAL BUFFER". Refer to "DATA MONITOR ". Operate ignition switch with "OIL P SW" of data monitor and check operation status.

When ignition switch is in ON position (Engine stopped): OIL P SW CLOSE

When engine running: OIL P SW OPEN

OK or NG

OK: GO TO 4.

NG: Replace the IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".

Fig 1: CONSULT-II DATA MONITOR Screen
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
Select "METER A/C AMP" on CONSULT-II. Operate ignition switch with "OIL W/L" of data monitor and check operation status.

When ignition switch is in ON position (Engine stopped): OIL W/L ON

When engine running: OIL W/L OFF

OK or NG

OK: Replace the combination meter. Refer to "COMBINATION METER ".

NG: Replace the BCM. Refer to "BCM ".

Fig 2: CONSULT-II DATA MONITOR Screen
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK OIL PRESSURE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector E121 and oil pressure switch connector F106.
3. Check continuity between IPDM E/R harness connector E121 (A) terminal 57 and oil pressure switch harness connector F106 (B) terminal 1.
  Continuity should exist.
Fig 3: Checking Continuity Between IPDM E/R And Oil Pressure Switch Connector Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 6.

NG: Repair harness or connector.
CHECK OIL PRESSURE SWITCH
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.