Infiniti M35/M45 Y50. Manual - part 367

WARNING LAMPS

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TKWT5284E

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WARNING LAMPS

Oil Pressure Warning Lamp Stays Off (Ignition Switch ON)

NKS003US

1. 

CHECK OPERATION OF OIL PRESSURE WARNING LAMP

Activate IPDM E/R auto active test. Refer to 

PG-23, "Auto Active Test"

 .

Does oil pressure warning lamp is blinking?

YES

>> GO TO 2.

NO

>> GO TO 4.

2. 

CHECK OIL PRESSURE SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector and oil pressure switch con-
nector.

3.

Check continuity between IPDM E/R harness connector (A) and
oil pressure switch harness connector (B).

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

3. 

CHECK OIL PRESSURE SWITCH

Check oil pressure switch. Refer to 

DI-54, "OIL PRESSURE SWITCH"

 .

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PG-31, "Removal and Installation of IPDM E/R"

 .

NG

>> Replace oil pressure switch.

4. 

CHECK UNIFIED METER AND A/C AMP. (CONSULT-II)

Perform self-diagnosis of unified meter and A/C amp. Refer to 

DI-31, "CONSULT-II Function (METER A/C

AMP)"

 .

Self-diagnostic results content

No malfunction detected>> GO TO 5.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.

5. 

CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL

1.

Select “METER A/C AMP” on CONSULT-II.

2.

Operate ignition switch with “OIL W/L” of “DATA MONITOR” and
check operation status. 

OK or NG

OK

>> Replace combination meter.

NG

>> GO TO 6.

A

B

Continuity

Connector

Terminal

Connector

Terminal

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 F21

1

Yes

PKIB7657E

“OIL W/L”

When ignition switch is in ON 
position (Engine stopped)

: ON

When engine running

: OFF

PKIA2064E

WARNING LAMPS

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6. 

CHECK BCM INPUT SIGNAL 

1.

Select “SIGNAL BUFFER” of “BCM” on CONSULT-II.

2.

Operate ignition switch with “OIL PRESS SW” of “DATA MONI-
TOR” and check operate status.

OK or NG

OK

>> Replace BCM. Refer to 

BCS-15, "Removal and Installa-

tion of BCM"

 .

NG

>> Replace IPDM E/R. Refer to 

PG-31, "Removal and Installation of IPDM E/R"

 .

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

NKS003UT

NOTE:
For oil pressure inspection, refer to 

LU-8, "OIL PRESSURE CHECK"

  (VQ35DE) or 

LU-27, "OIL PRESSURE

CHECK"

  (VK45DE).

1. 

CHECK OPERATION OF OIL PRESSURE WARNING LAMP

Activate IPDM E/R auto active test. Refer to 

PG-23, "Auto Active Test"

 .

Does oil pressure warning lamp is blinking?

YES

>> GO TO 2.

NO

>> GO TO 5.

2. 

CHECK IPDM E/R OUTPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect oil pressure switch connector.

3.

Turn ignition switch ON.

4.

Check voltage between oil pressure switch harness connector
and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 4.

3. 

CHECK OIL PRESSURE SWITCH

1.

Turn ignition switch OFF.

2.

Check oil pressure switch. Refer to 

DI-54, "OIL PRESSURE SWITCH"

 .

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PG-31, "Removal and Installation of IPDM E/R"

 .

NG

>> Replace oil pressure switch.

“OIL PRESS SW”

When ignition switch is in ON 
position (Engine stopped)

: ON

When engine running

: OFF

SKIA8709E

Terminals

Voltage (Approx.)

(+)

(–)

Oil pressure switch

connector

Terminal

F21

1

Ground

12 V

PKIB7658E

DI-54

WARNING LAMPS

4. 

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 and
ground.

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PG-31, "Removal and

Installation of IPDM E/R"

 .

NG

>> Repair harness or connector.

5. 

CHECK IPDM E/R (CONSULT-II)

Perform self-diagnosis of IPDM E/R. Refer to 

PG-20, "CONSULT-II Function (IPDM E/R)"

 .

Self-diagnostic results content

No malfunction detected>> Replace combination meter.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.

Electrical Component Inspection

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OIL PRESSURE SWITCH

Check continuity between oil pressure switch and ground.

IPDM E/R connector

Terminal

Ground

Continuity

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No

PKIB7659E

Condition

Oil pressure [kPa (kg/cm

2

 , psi)]

Continuity

Engine stopped

Less than 29 (0.3, 4)

Yes

Engine running

More than 29 (0.3, 4) 

No

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