Nissan Pathfinder (2009 year). Manual - part 517

MWI

POWER SUPPLY AND GROUND CIRCUIT

MWI-29

< COMPONENT DIAGNOSIS >

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POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER

COMBINATION METER : Diagnosis Procedure

INFOID:0000000003935352

1.

CHECK FUSES

Check for blown combination meter fuses.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1.

Disconnect combination meter connector M24.

2.

Check voltage between combination meter harness connector
M24 terminals 3, 16 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Check harness for open between combination meter and fuse.

3.

GROUND CIRCUIT CHECK

1.

Turn ignition switch OFF.

2.

Check continuity between combination meter harness connector
M24 terminals 13, 23 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Check ground harness.

BCM (BODY CONTROL MODULE)

BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000003935353

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Unit

Power source

Fuse No.

Combination meter

Battery 19

Ignition switch ON or START 

14

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

Connector

Terminal

M24

3

Ground

Battery 
voltage

Battery 
voltage

Battery

 voltage

16

0V

0V

Battery
voltage

WKIA3279E

Terminals

Continuity

(+)

(–)

Connector

Terminal

M24

13

Ground

Yes

23

WKIA3280E

2009 Pathfinder

MWI-30

< COMPONENT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM.

3.

Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> INSPECTION END

NO

>> Repair or replace harness.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure

INFOID:0000000003935354

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following IPDM E/R fuses or fusible link are not blown.

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

18 (10A)

70

G (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

1 (10A)

Connector

Terminals 

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

M18

11

Ground

ACC 

power 

supply

Ignition 

switch 

ACC or 

ON

Battery voltage

38

Ground

Ignition 

power 

supply

Ignition 

switch ON 

or START

Battery voltage

M20

57

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

70

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

LIIA2415E

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

2009 Pathfinder

MWI

POWER SUPPLY AND GROUND CIRCUIT

MWI-31

< COMPONENT DIAGNOSIS >

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Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK BATTERY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R.

3.

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

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between IPDM E/R harness connectors and
ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

Terminal No.

Signal name

Fuses and fusible link No.

1

Battery

A, D

2

Battery

C

Terminals

Ignition switch position

(+)

(

−

)

OFF

ON

START

Connector

Terminal

E118

1

Ground

Battery
voltage

Battery
voltage

Battery
voltage

2

Battery
voltage

Battery
voltage

Battery
voltage

AWMIA0023ZZ

IPDM E/R

Ground

Continuity

Connector

Terminal

E122 (A)

38

Yes

E124 (B)

59

AWMIA0024ZZ

2009 Pathfinder

MWI-32

< COMPONENT DIAGNOSIS >

FUEL LEVEL SENSOR SIGNAL CIRCUIT

FUEL LEVEL SENSOR SIGNAL CIRCUIT

Description

INFOID:0000000003935355

The fuel level sensor unit and fuel pump detects the approximate fuel level in the fuel tank and transmits the
fuel level signal to the combination meter.

Component Function Check

INFOID:0000000003935356

1.

COMBINATION METER INPUT SIGNAL

1.

Select “METER/M&A” on CONSULT-III.

2.

Using “FUEL METER” of “DATA MONITOR”, compare the value of DATA MONITOR with fuel gauge
pointer of combination meter.

Does the data monitor value approximately match the fuel gauge indication?

YES

>> Inspection End.

NO

>> Replace combination meter. Refer to 

MWI-94, "Removal and Installation"

.

Diagnosis Procedure

INFOID:0000000003935357

1.

CHECK HARNESS CONNECTOR

1.

Turn ignition switch OFF.

2.

Check combination meter and fuel level sensor unit terminals (meter-side and harness-side) for poor con-
nection.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace terminals or connectors.

2.

CHECK FUEL LEVEL SENSOR UNIT CIRCUIT

1.

Disconnect combination meter connector and fuel level sensor
unit connector.

2.

Check continuity between combination meter harness connector
and fuel level sensor unit and fuel pump harness connector.

3.

Check continuity between fuel level sensor unit and fuel pump
harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3

Fuel gauge pointer

Reference value of data monitor [lit.]

Full

Approx. 79.3

3/4

Approx. 58.5

1/2

Approx. 37.1

1/4

Approx. 22.4

Empty

Approx. 7.6

Terminals

Continuity

(+)

(-)

Connector

Terminal

Connector

Terminal

C5

2

M24

9

Yes

Terminals

Continuity

(+)

(-)

Connector

Terminal

Ground

C5

2

No

WKIA3288E

2009 Pathfinder

MWI

FUEL LEVEL SENSOR SIGNAL CIRCUIT

MWI-33

< COMPONENT DIAGNOSIS >

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NO

>> Repair harness or connector.

3.

CHECK FUEL LEVEL SENSOR UNIT GROUND CIRCUIT

1.

Check continuity between combination meter harness connector
and fuel level sensor unit and fuel pump harness connector.

2.

Check continuity between fuel level sensor unit and fuel pump
harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair harness or connector.

4.

CHECK INSTALLATION CONDITION

Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any of the
internal components in the fuel tank.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Install the fuel level sensor unit properly.

Component Inspection

INFOID:0000000003935358

1.

REMOVE FUEL LEVEL SENSOR UNIT

Remove the fuel level sensor unit. Refer to 

FL-11, "Removal and Installation"

. 

>> GO TO 2

2.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP

Check the resistance between terminals 2 and 5.

*1 and *2: When float arm is in contact with stopper.

Is inspection result normal?

YES

>> Inspection End.

NO

>> Replace fuel level sensor unit and fuel pump. Refer to

FL-11, "Removal and Installation"

.

Terminals

Continuity

(+)

(-)

Connector

Terminal

Connector

Terminal

C5

5

M24

4

Yes

Terminals

Continuity

(+)

(-)

Connector

Terminal

Ground

C5

5

No

WKIA3289E

Terminal

Float position

mm (in)

Resistance value

(Approx.)

2

5

*1

Empty

10 (0.4)

81.5

Ω

*2

Full

211.1 (8.3)

5

Ω

LKIA0402E

2009 Pathfinder

MWI-34

< COMPONENT DIAGNOSIS >

OIL PRESSURE SWITCH SIGNAL CIRCUIT

OIL PRESSURE SWITCH  SIGNAL CIRCUIT

Description

INFOID:0000000003935359

Detects the engine oil pressure and transmits the oil pressure switch signal to the IPDM E/R.

Component Function Check

INFOID:0000000003935360

1.

COMBINATION METER INPUT SIGNAL

1.

Select “METER/M&A” on CONSULT-III.

2.

Monitor “OIL W/L” of “DATA MONITOR” while operating ignition switch.

>> Inspection End.

Diagnosis Procedure

INFOID:0000000003935361

1.

CHECK OIL PRESSURE SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector E122 and oil pressure switch
connector E208 (VQ40DE) or F4 (VK56DE).

3.

Check continuity between IPDM E/R harness connector E122
(A) terminal 42 and oil pressure switch harness connector E208
(VQ40DE) or F4 (VK56DE) (B) terminal 1.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000003935362

1.

CHECK OIL PRESSURE SWITCH

Check continuity between oil pressure switch and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace the oil pressure switch.

OIL W/L

When ignition switch is in ON 
position (Engine stopped)

: ON

When engine is running

: OFF

Continuity should exist.

WKIA5607E

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

ELF0044D

2009 Pathfinder

MWI

COMPASS

MWI-35

< COMPONENT DIAGNOSIS >

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COMPASS

Wiring Diagram — With HomeLink® Universal Transceiver

INFOID:0000000003935363

ABNWA0163GB

2009 Pathfinder

MWI-36

< COMPONENT DIAGNOSIS >

COMPASS

ABNIA0509GB

2009 Pathfinder