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Nissan Pathfinder (2009 year). Manual - part 524

MWI

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

MWI-85

< ECU DIAGNOSIS >

Fail Safe

INFOID:0000000004428633

CAN COMMUNICATION CONTROL

When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN
communication recovers normally, it also returns to normal control.

If No CAN Communication Is Available With ECM

ABMIA0338GB

2009 Pathfinder

MWI-86

< ECU DIAGNOSIS >

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

If No CAN Communication Is Available With BCM

IGNITION RELAY MALFUNCTION DETECTION FUNCTION

• IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it.
• IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the excitation

coil circuit.

• If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to

alert the user to the ignition relay malfunction when the ignition switch is turned OFF.

NOTE:

The tail lamp turns OFF when the ignition switch is turned ON.

FRONT WIPER CONTROL

IPDM E/R detects front wiper stop position by a front wiper auto stop signal.
When a front wiper auto stop signal is in the conditions listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 second activation and 20 second stop five times.

NOTE:
This operation status can be confirmed on the IPDM E/R “DATA MONITOR” that displays “Block” for the item
“WIP PROT” while the wiper is stopped.

STARTER MOTOR PROTECTION FUNCTION

IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains
active for 90 seconds.

Control part

Fail-safe in operation

Cooling fan

• Turns ON the cooling fan relay when the ignition switch is turned ON
• Turns OFF the cooling fan relay when the ignition switch is turned OFF

Control part

Fail-safe in operation

Headlamp

• Turns ON the headlamp low relay when the ignition switch is turned ON
• Turns OFF the headlamp low relay when the ignition switch is turned OFF
• Headlamp (LH/RH) high relays OFF

• Parking lamps
• License plate lamps
• Tail lamps

• Turns ON the tail lamp relay when the ignition switch is turned ON
• Turns OFF the tail lamp relay when the ignition switch is turned OFF

Front wiper

• The status just before activation of fail-safe control is maintained until the ignition

switch is turned OFF while the front wiper is operating at LO or HI speed.

• The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-

safe control is activated while the front wiper is set in the INT mode and the front wiper
motor is operating.

Rear window defogger

Rear window defogger relay OFF

A/C compressor

A/C relay OFF

Front fog lamps (if equipped)

Front fog lamp relay OFF

Ignition switch

Ignition relay

Tail lamp relay

—

OFF

—

Ignition switch

Front wiper switch

Auto stop signal

OFF

Front wiper stop position signal cannot be
input 10 seconds.

The signal does not change for 10 seconds.

2009 Pathfinder

MWI

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

MWI-87

< ECU DIAGNOSIS >

DTC Index

INFOID:0000000004428634

NOTE:
The details of TIME display are as follows.
• CRNT: The malfunctions that are detected now
• 1 - 39: The number is indicated when it is normal at present and a malfunction was detected in the past. It

increases like 0

→

2 ··· 38

→

39 after returning to the normal condition whenever IGN OFF

→

ON. It is

fixed to 39 until the self-diagnosis results are erased if it is over 39. It returns to 0 when a malfunction is
detected again in the process.

CONSULT-III display

Fail-safe

TIME

NOTE

Refer to

No DTC is detected.
further testing
may be required.

—

U1000: CAN COMM CIRCUIT

CRNT

1 – 39

PCS-17

2009 Pathfinder

MWI-88

< SYMPTOM DIAGNOSIS >

THE FUEL GAUGE POINTER DOES NOT MOVE

SYMPTOM DIAGNOSIS

THE FUEL GAUGE POINTER DOES NOT MOVE

Description

INFOID:0000000003935381

Fuel gauge needle will not move from a certain position.

Diagnosis Procedure

INFOID:0000000003935382

CHECK COMBINATION METER INPUT SIGNAL

Select “METER/M&A” on CONSULT-III.

Using “FUEL METER” of “DATA MONITOR”, compare the monitor value with the fuel gauge reading on
the combination meter. Refer to

MWI-32, "Component Function Check"

Does monitor value match fuel gauge reading?

YES

>> GO TO 2

>> Replace combination meter. Refer to

MWI-94, "Removal and Installation"

CHECK FUEL LEVEL SENSOR SIGNAL CIRCUIT

Check the fuel level sensor signal circuit. Refer to

MWI-32, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> GO TO 3

>> Repair harness or connector.

CHECK FUEL LEVEL SENSOR UNIT

Perform a unit check for the fuel level sensor unit. Refer to

MWI-33, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 4

>> Replace fuel level sensor unit. Refer to

FL-11, "Removal and Installation"

CHECK FLOAT INTERFERENCE

Check that the float arm does not interfere or bind with any of the components in the fuel tank.
Is the inspection result normal?

YES

>> Replace combination meter. Refer to

MWI-94, "Removal and Installation"

>> Repair or replace malfunctioning parts.

2009 Pathfinder

MWI

THE FUEL GAUGE POINTER DOES NOT MOVE TO "F" WHEN REFUELING

MWI-89

< SYMPTOM DIAGNOSIS >

THE FUEL GAUGE POINTER DOES NOT MOVE TO "F" WHEN REFUEL-
ING

Description

INFOID:0000000003935383

The fuel gauge needle will not move to “F” position when refueling.

Diagnosis Procedure

INFOID:0000000003935384

OBSERVE FUEL GAUGE

Does it take a long time for the pointer to move to FULL position?

YES or NO

YES

>> GO TO 2

>> GO TO 3

IDENTIFY FUELING CONDITION

Was the vehicle fueled with the ignition switch ON?

YES or NO

YES

>> Be sure to fuel the vehicle with the ignition switch OFF. Otherwise, it will take a long time to move

to FULL position because of the characteristic of the fuel gauge.

>> GO TO 3

OBSERVE VEHICLE POSITION

Is the vehicle parked on an incline?

YES or NO

YES

>> Check the fuel level indication with vehicle on a level surface.

>> GO TO 4

OBSERVE FUEL GAUGE POINTER

During driving, does the fuel gauge pointer move gradually toward EMPTY position?
YES or NO

YES

>> Check the components. Refer to

MWI-33, "Component Inspection"

>> The float arm may interfere or bind with any of the components in the fuel tank.

2009 Pathfinder

MWI-90

< SYMPTOM DIAGNOSIS >

THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON

THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON

Description

INFOID:0000000003935385

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

Diagnosis Procedure

INFOID:0000000003935386

CHECK OIL PRESSURE WARNING LAMP

Perform IPDM E/R auto active test. Refer to

PCS-12, "Diagnosis Description"

Is oil pressure warning lamp illuminated?

YES

>> GO TO 2

>> Replace combination meter. Refer to

MWI-94, "Removal and Installation"

CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT

Check the oil pressure switch signal circuit. Refer to

MWI-34, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> GO TO 3

>> Repair harness or connector.

CHECK OIL PRESSURE SWITCH UNIT

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

MWI-34, "Component Inspection"

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to

PCS-33, "Removal and Installation of IPDM E/R"

>> Replace oil pressure switch.

2009 Pathfinder

MWI

THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF

MWI-91

< SYMPTOM DIAGNOSIS >

THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF

Description

INFOID:0000000003935387

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

Diagnosis Procedure

INFOID:0000000003935388

CHECK OIL PRESSURE WARNING LAMP

Perform IPDM E/R auto active test. Refer to

PCS-12, "Diagnosis Description"

Is oil pressure warning lamp illuminated?

YES

>> GO TO 2

>> Replace combination meter. Refer to

MWI-94, "Removal and Installation"

CHECK IPDM E/R OUTPUT VOLTAGE

Turn ignition switch OFF.

Disconnect the oil pressure switch connector.

Turn ignition switch ON.

Check voltage between the oil pressure switch harness connec-
tor E208 (VQ40DE) or F4 (VK56DE) terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 3

>> GO TO 4

CHECK OIL PRESSURE SWITCH

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

MWI-34, "Component Inspection"

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to

PCS-33, "Removal and Installation of IPDM E/R"

>> Replace oil pressure switch.

CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT

Check the oil pressure switch signal circuit. Refer to

MWI-34, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to

PCS-33, "Removal and Installation of IPDM E/R"

>> Repair harness or connector.

1 – Ground

: Approx. 12V

PKIC1144E

2009 Pathfinder

MWI-92

< SYMPTOM DIAGNOSIS >

NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

COMPASS

COMPASS : Description

INFOID:0000000003935389

COMPASS

• The electronic compass is highly protected from changes in most magnetic fields. However, some large

changes in magnetic fields can affect it. Some examples are (but not limited to): high tension power lines,
large steel buildings, subways, steel bridges, automatic car washes, large piles of scrap metal, etc. While
this does not happen very often, it is possible.

• During normal operation, the Compass Mirror will continuously update the compass calibration to adjust for

gradual changes in the vehicle's magnetic "remnant" field. If the vehicle is subjected to high magnetic influ-
ences, the compass may appear to indicate false headings, become locked, or appear that it is unable to be
calibrated. If this occurs, perform the calibration procedure.

• If at any time the compass continually displays the incorrect direction or the reading is erratic or locked, ver-

ify the correct zone variance.

Symptom Chart

Symptom

Cause

Solution / Reference

The compass display reads "C".

• Compass is not calibrated.
• Incorrect zone variance setting.
• Large change in magnetic field (Steel

bridges, subways, concentrations of
metal, car washes, etc.)

• Compass was calibrated incorrectly or

in the presence of a strong magnetic
field.

Perform Calibration. Refer to