Oil Pressure Warning Lamp Stays Off (Ignition Switch ON)

CHECK OIL PRESSURE WARNING LAMP OPERATION
Activate IPDM E/R auto active test. Refer to "AUTO ACTIVE TEST ".

Does oil pressure warning lamp blink?

YES: GO TO 2.

NO: GO TO 5.

CHECK IPDM E/R INPUT SIGNAL

Turn ignition switch ON.

Check voltage between IPDM E/R harness connector and ground.

TERMINAL VOLTAGE REFERENCE

Terminals			Condition	Voltage (Approx.)
(+)		(-)
IPDM E/R connector	Terminal	(-)
E46	37	Ground	Engine stopped	0V

Fig 1: Checking Voltage Between IPDM E/R Harness Connector Terminal 37 And Ground

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

OK or NG

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

NG: GO TO 3.

CHECK OIL PRESSURE CIRCUIT
1. Disconnect IPDM E/R connector and oil pressure switch connector (with MR20DE) or double meter connector (with QR25DE).
2. Check continuity between IPDM E/R harness connector E46 (A) terminal 37 and oil pressure switch harness connector F32 (B) terminal 1 (with MR20DE) or double meter connector M89 (C) terminal 6 (with QR25DE).
  With MR20DE
  
  37 - 1 : Continuity should exist
  
  Fig 2: Checking Continuity Between IPDM E/R And Oil Pressure Switch Or Double Meter Connector Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  With QR25DE
  
  37 - 6 : Continuity should exist
  
  OK or NG
  
  OK: With MR20DE, GO TO 4. With QR25DE, refer to "OIL PRESSURE SENSOR INSPECTION ".
  
  NG: Repair harness or connector.
CHECK OIL PRESSURE SWITCH
Check oil pressure switch. Refer to "COMPONENT INSPECTION ".

OK or NG

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

NG: Replace oil pressure switch.
CHECK CAN COMMUNICATION
Select "METER/M&A" on CONSULT-III, and perform self-diagnosis of combination meter.

Self-diagnostic results content

No malfunction detected: GO TO 6.

Malfunction detected: Check applicable parts, and repair or replace as necessary.
CHECK COMBINATION METER INPUT SIGNAL
Select "METER/M&A" on CONSULT-III. Operate ignition switch with "OIL W/L" of "DATA MONITOR" and check operation status.

"OIL W/L"

When ignition switch is in ON position (Engine stopped.) : ON

When engine running : OFF

OK or NG

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

NG: GO TO 7.
CHECK BCM INPUT SIGNAL
Select "BCM" on CONSULT-III. Then select "SIGNAL BUFFER". Operate ignition switch with "OIL PRESS SW" of "DATA MONITOR" and check operation status.

"OIL PRESS SW"

When ignition switch is in ON position (Engine stopped.) : ON

When engine running : OFF

OK or NG

OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

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