Infiniti QX56 (Z62). Manual - part 956

MWI-78

< SYMPTOM DIAGNOSIS >

THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON

THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON

Description

INFOID:0000000006221763

The oil pressure warning lamp stays off when the ignition switch is turned ON.

Diagnosis Procedure

INFOID:0000000006221764

1.

CHECK OIL PRESSURE WARNING LAMP

Perform auto active test. Refer to 

PCS-10, "Diagnosis Description"

.

Is oil pressure warning lamp blinking?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT

Check the oil pressure switch signal circuit. Refer to 

MWI-71, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK OIL PRESSURE SWITCH

Perform a unit check for the oil pressure switch. Refer to 

MWI-71, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-32, "Removal and Installation"

.

NO

>> Replace oil pressure switch. Refer to 

EM-58, "Removal and Installation"

.

4.

CHECK COMBINATION METER INPUT SIGNAL

Connect CONSULT-III and perform an input signal check for the combination meter. Refer to 

MWI-71, "Com-

ponent Function Check"

.

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-85, "Removal and Installation"

.

NO

>> Replace IPDM E/R. Refer to 

PCS-32, "Removal and Installation"

.

MWI

THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF

MWI-79

< SYMPTOM DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF

Description

INFOID:0000000006221765

The oil pressure warning lamp remains illuminated while the engine is running (normal oil pressure).

Diagnosis Procedure

INFOID:0000000006221766

1.

CHECK OIL PRESSURE WARNING LAMP

Perform auto active test. Refer to 

PCS-10, "Diagnosis Description"

.

Is oil pressure warning lamp blinking?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

CHECK IPDM E/R OUTPUT VOLTAGE

1.

Turn ignition switch OFF.

2.

Disconnect the oil pressure switch connector.

3.

Turn ignition switch ON.

4.

Check voltage between the oil pressure switch harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

CHECK OIL PRESSURE SWITCH

Perform a unit check for the oil pressure switch. Refer to 

MWI-71, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-32, "Removal and Installation"

.

NO

>> Replace oil pressure switch. Refer to 

EM-58, "Removal and Installation"

.

4.

CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT

Check the oil pressure switch signal circuit. Refer to 

MWI-71, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK COMBINATION METER INPUT SIGNAL

Connect CONSULT-III and perform an input signal check for the combination meter. Refer to 

MWI-71, "Com-

ponent Function Check"

.

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-85, "Removal and Installation"

.

NO

>> Replace IPDM E/R. Refer to 

PCS-32, "Removal and Installation"

.

Terminals

Voltage

(Approx.)

(+)

(

−

)

Oil pressure switch

Ground

Connector

Terminal

E206

1

12 V

MWI-80

< SYMPTOM DIAGNOSIS >

THE PARKING BRAKE RELEASE WARNING CONTINUES DISPLAYING, OR 

DOES NOT DISPLAY

THE PARKING BRAKE RELEASE WARNING CONTINUES DISPLAYING,
OR DOES NOT DISPLAY

Description

INFOID:0000000006221767

• The parking brake warning is displayed during vehicle travel even though the parking brake is released.
• The parking brake warning is not displayed even though driving the vehicle with the parking brake applied.

Diagnosis Procedure

INFOID:0000000006221768

1.

CHECK PARKING BRAKE WARNING LAMP OPERATION

1.

Start engine.

2.

Check the operation of the brake warning lamp when operating the parking brake.

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-85, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK PARKING BRAKE SWITCH SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Check the parking brake switch signal circuit. Refer to 

WCS-43, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK PARKING BRAKE SWITCH UNIT

Perform a unit check for the parking brake switch. Refer to 

BRC-118, "Component Inspection"

. 

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-85, "Removal and Installation"

.

NO

>> Replace parking brake switch. Refer to 

PB-5, "Exploded View"

.

Condition

Warning lamp status

Parking brake applied

ON

Parking brake released

OFF

MWI

THE LOW WASHER FLUID WARNING CONTINUES DISPLAYING, OR DOES 

NOT DISPLAY

MWI-81

< SYMPTOM DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

THE LOW WASHER FLUID WARNING CONTINUES DISPLAYING, OR
DOES NOT DISPLAY

Description

INFOID:0000000006221769

• The warning is still displayed even after washer fluid is added.
• The warning is not displayed even though the washer tank is empty.

Diagnosis Procedure

INFOID:0000000006221770

1.

CHECK WASHER LEVEL SWITCH SIGNAL CIRCUIT

Check the washer level switch signal circuit. Refer to 

MWI-73, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK WASHER LEVEL SWITCH UNIT

Perform a unit check for the washer level switch. Refer to 

MWI-73, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-85, "Removal and Installation"

.

NO

>> Replace washer level switch. Refer to 

WW-62, "Removal and Installation"

.