Nissan Murano Z51 (2008 year). Manual - part 414

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

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JCMWM3174GB

Revision: 2008 October

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

Fail-safe

INFOID:0000000003733519

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

JCMWM3175GB

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

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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.

FRONT WIPER CONTROL

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

Control part

Fail-safe operation

Cooling fan

• Turns ON the cooling fan relay-2 and the cooling fan relay-3 when ignition switch is 

turned ON (Cooling fan operates at HI)

• Turns OFF the cooling fan relay-1, the cooling fan relay-2 and the cooling fan relay-3 

when the ignition switch is turned OFF (Cooling fan does not operate)

A/C compressor

A/C relay OFF

Alternator

Outputs the power generation command signal (PWM signal) 0%

Control part

Fail-safe 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 high relay OFF

• Parking  lamps
• License plate lamps
• Side maker lamps
• Illuminations
• 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/AUTO mode and the 
front wiper motor is operating.

Front fog lamps

Front fog lamp relay OFF

Horn

Horn OFF

Ignition relay

The status just before activation of fail-safe is maintained.

Starter motor

Starter control relay OFF

Steering lock unit

Steering lock relay OFF

Voltage judgment

IPDM E/R judgment

Operation

Ignition relay contact side

Ignition relay excitation coil 

side

ON

ON

Ignition relay ON normal

—

OFF

OFF

Ignition relay OFF normal

—

ON

OFF

Ignition relay ON stuck

• Detects DTC “B2098: IGN RELAY ON”
• Turns ON the tail lamp relay for 10 min-

utes

OFF

ON

Ignition relay OFF stuck

Detects DTC “B2099: IGN RELAY OFF”

Revision: 2008 October

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

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.

DTC Index

INFOID:0000000003733520

NOTE:
• The details of time display are as follows.
- CRNT: A malfunction is detected now.
- PAST: A malfunction was detected in the past.
• IGN counter is displayed on FFD (Freeze Frame data).
- The number is 0 when is detected now.
- The number increases like 1 

→

 2 ··· 38 

→

 39 after returning to the normal condition whenever IGN OFF 

→

ON.

- The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.

×

: Applicable

Ignition switch

Front wiper switch

Front wiper stop position signal

ON

OFF

The front wiper stop position signal (stop 
position) cannot be input for 10 seconds.

ON

The front wiper auto stop signal does not 
change for 10 seconds.

CONSULT display

Fail-safe

Refer to

No DTC is detected.
further testing
may be required.

—

—

U1000: CAN COMM CIRCUIT

×

PCS-15

B2098: IGN RELAY ON

×

PCS-16

B2099: IGN RELAY OFF

—

PCS-17

B2108: STRG LCK RELAY ON

—

SEC-103

B2109: STRG LCK RELAY OFF

—

SEC-104

B210A: STRG LCK STATE SW

—

SEC-105

B210B: START CONT RLY ON

—

SEC-109

B210C: START CONT RLY OFF

—

SEC-110

B210D: STARTER RELAY ON

—

SEC-111

B210E: STARTER RELAY OFF

—

SEC-112

B210F: INTRLCK/PNP SW ON

—

SEC-114

B2110: INTRLCK/PNP SW OFF

—

SEC-116

Revision: 2008 October

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WIPER AND WASHER SYSTEM SYMPTOMS

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SYMPTOM DIAGNOSIS

WIPER AND WASHER SYSTEM SYMPTOMS

WITH RAIN SENSOR

WITH RAIN SENSOR : Symptom Table

INFOID:0000000003307653

CAUTION:

Perform the self-diagnosis with CONSULT-III before performing the diagnosis by symptom. Perform
the diagnosis by DTC if DTC is detected.

Symptom

Probable malfunction location

Inspection item

Front wiper does not 
operate.

HI only

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch 
Refer to 

BCS-94, "Symptom 

Table"

.

• IPDM E/R
• Harness between IPDM E/R and front wiper 

motor

• Front wiper motor

Front wiper motor (HI) circuit
Refer to 

WW-30, "Compo-

nent Function Check"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

LO and INT/AUTO

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

• IPDM E/R
• Harness between IPDM E/R and front wiper 

motor

• Front wiper motor

Front wiper motor (LO) circuit
Refer to 

WW-28, "Compo-

nent Function Check"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

INT/AUTO only
(Auto operation)

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

• Rain sensor
• Harness between rain sensor and BCM
• BCM

Rain sensor
Refer to 

WW-36, "Compo-

nent Function Check"

.

HI, LO and INT/AUTO

SYMPTOM DIAGNOSIS
“FRONT WIPER DOES NOT OPERATE”
Refer to 

WW-117, "Diagnosis Procedure"

.

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WIPER AND WASHER SYSTEM SYMPTOMS

Front wiper does not 
stop.

HI only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

IPDM E/R

—

LO only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

IPDM E/R

—

INT/AUTO only
(Auto operation)

• Combination switch
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

• Rain sensor
• Harness between rain sensor and BCM
• BCM

Rain sensor
Refer to 

WW-36, "Compo-

nent Function Check"

.

Front wiper does not 
operate normally.

Sensitivity adjustment 
cannot be performed.

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

BCM

—

Wiper is not linked to 
the washer operation.

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

BCM

—

Does not return to stop 
position. [Repeatedly 
operates for 10 sec-
onds and then stops 
for 20 seconds. After 
that, it stops the opera-
tion. (Fail-safe)]

• IPDM E/R
• Harness between IPDM E/R and front wiper 

motor

• Front wiper motor

Front wiper auto stop signal 
circuit
Refer to 

WW-32, "Compo-

nent Function Check"

.

Rear wiper does not 
operate.

ON only

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

INT only

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

ON and INT

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

• BCM
• Harness between rear wiper motor and BCM
• Harness between rear wiper motor and ground
• Rear wiper motor

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Rear wiper does not 
stop.

ON only

• Combination switch
• BCM

Rear wiper motor circuit
Refer to 

WW-38, "Compo-

nent Function Check"

.

INT only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Symptom

Probable malfunction location

Inspection item

Revision: 2008 October

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WIPER AND WASHER SYSTEM SYMPTOMS

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WITHOUT RAIN SENSOR

WITHOUT RAIN SENSOR : Symptom Table

INFOID:0000000003519197

CAUTION:

Perform the self-diagnosis with CONSULT-III before performing the diagnosis by symptom. Perform
the diagnosis by DTC if DTC is detected.

Rear wiper does not 
operate normally.

Wiper is not linked to 
the washer operation.

• Combination switch
• Harness between rear wiper motor and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

BCM

—

Rear wiper does not 
return to the stop posi-
tion. [Stops after a five-
second operation. 
(Fail-safe)]

• BCM
• Harness between rear wiper motor and BCM
• Rear wiper motor

Rear wiper auto stop signal 
circuit
Refer to 

WW-40, "Compo-

nent Function Check"

.

Symptom

Probable malfunction location

Inspection item

Symptom

Probable malfunction location

Inspection item

Front wiper does not 
operate.

HI only

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch 
Refer to 

BCS-94, "Symptom 

Table"

.

• IPDM E/R
• Harness between IPDM E/R and front wiper 

motor

• Front wiper motor

Front wiper motor (HI) circuit
Refer to 

WW-30, "Compo-

nent Function Check"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

LO and INT

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

• IPDM E/R
• Harness between IPDM E/R and front wiper 

motor

• Front wiper motor

Front wiper motor (LO) circuit
Refer to 

WW-28, "Compo-

nent Function Check"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

INT only

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

HI, LO and INT

SYMPTOM DIAGNOSIS
“FRONT WIPER DOES NOT OPERATE”
Refer to 

WW-117, "Diagnosis Procedure"

.

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WIPER AND WASHER SYSTEM SYMPTOMS

Front wiper does not 
stop.

HI only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

IPDM E/R

—

LO only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

IPDM E/R

—

INT only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Front wiper request signal
• BCM
• IPDM E/R

IPDM E/R DATA MONITOR
“FR WIP REQ”

Front wiper does not 
operate normally.

Intermittent adjustment 
cannot be performed.

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

BCM

—

Intermittent control 
linked with vehicle 
speed cannot be per-
formed.

Check the vehicle speed detection wiper setting.
Refer to 

WW-18, "WIPER : CONSULT-III Function (BCM - WIPER)"

.

NOTE:
Factory setting of the front wiper intermitted operation is the operation without ve-
hicle speed.

Wiper is not linked to 
the washer operation.

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

BCM

—

Does not return to stop 
position. [Repeatedly 
operates for 10 sec-
onds and then stops 
for 20 seconds. After 
that, it stops the opera-
tion. (Fail-safe)]

• IPDM E/R
• Harness between IPDM E/R and front wiper 

motor

• Front wiper motor

Front wiper auto stop signal 
circuit
Refer to 

WW-32, "Compo-

nent Function Check"

.

Rear wiper does not 
operate.

ON only

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

INT only

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

ON and INT

• Combination switch
• Harness between combination switch and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

• BCM
• Harness between rear wiper motor and BCM
• Harness between rear wiper motor and ground
• Rear wiper motor

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Symptom

Probable malfunction location

Inspection item

Revision: 2008 October

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WIPER AND WASHER SYSTEM SYMPTOMS

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Rear wiper does not 
stop.

ON only

• Combination switch
• BCM

Rear wiper motor circuit
Refer to 

WW-38, "Compo-

nent Function Check"

.

INT only

• Combination switch
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

Rear wiper does not 
operate normally.

Wiper is not linked to 
the washer operation.

• Combination switch
• Harness between rear wiper motor and BCM
• BCM

Combination switch
Refer to 

BCS-94, "Symptom 

Table"

.

BCM

—

Rear wiper does not 
return to the stop posi-
tion. [Stops after a five-
second operation. 
(Fail-safe)]

• BCM
• Harness between rear wiper motor and BCM
• Rear wiper motor

Rear wiper auto stop signal 
circuit
Refer to 

WW-40, "Compo-

nent Function Check"

.

Symptom

Probable malfunction location

Inspection item

Revision: 2008 October

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NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

Description

INFOID:0000000003307654

FRONT WIPER MOTOR PROTECTION FUNCTION

• IPDM E/R may stop the front wiper to protect the front wiper motor if any obstruction (operation resistance)

such as a large amount of snow is detected during the front wiper operation.

• At that time turn OFF the front wiper and remove the foreign object. Then wait for approximately 20 seconds

or more and reactivate the front wiper. The wiper will operate normally.

REAR WIPER MOTOR PROTECTION FUNCTION

• BCM may stop rear wiper to protect the rear wiper motor when the rear wiper is stopped for 5 seconds or

more due to a snowfall.

• Rear wiper operates normally one minute after the obstacles are removed with rear wiper OFF.

Revision: 2008 October

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FRONT WIPER DOES NOT OPERATE

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FRONT WIPER DOES NOT OPERATE

Description

INFOID:0000000003307655

The front wiper does not operate under any operation conditions.

Diagnosis Procedure

INFOID:0000000003307656

1.

CHECK WIPER RELAY OPERATION

IPDM E/R AUTO ACTIVE TEST

1.

Start IPDM E/R auto active test. Refer to 

PCS-10, "Diagnosis Description"

.

2.

Check that the front wiper operates at the LO/HI operation.

CONSULT-III ACTIVE TEST

1.

Select “FRONT WIPER” of IPDM E/R active test item.

2.

With operating the test item, check front wiper operation.

Is front wiper operation normally?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK FRONT WIPER MOTOR FUSE

1.

Turn the ignition switch OFF.

2.

Check that the front wiper motor 30 A fuse (#60) is not fusing.

Is the fuse fusing?

YES

>> Replace the fuse after repairing the applicable circuit.

NO

>> GO TO 3.

3.

CHECK FRONT WIPER MOTOR GROUND OPEN CIRCUIT 

1.

Disconnect front wiper motor connector.

2.

Check continuity between front wiper motor harness connector and ground.

Does continuity exist?

YES

>> GO TO 4.

NO

>> Repair the harness or connector.

4.

CHECK FRONT WIPER MOTOR OUTPUT VOLTAGE

CONSULT-III ACTIVE TEST

1.

Turn the ignition switch ON.

2.

Select “FRONT WIPER” of IPDM E/R active test item.

3.

With operating the test item, check voltage between IPDM E/R harness connector and ground.

Lo

: Front wiper LO operation

Hi

: Front wiper HI operation

Off

: Stop the front wiper.

Front wiper motor

Ground

Continuity

Connector

Terminal

E12

2

Existed

Revision: 2008 October

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< SYMPTOM DIAGNOSIS >

FRONT WIPER DOES NOT OPERATE

Is the measurement value normal?

YES

>> Replace front wiper motor.

NO

>> Replace IPDM E/R. 

5.

CHECK FRONT WIPER REQUEST SIGNAL INPUT

CONSULT-III DATA MONITOR

1.

Select “FR WIP REQ” of IPDM E/R data monitor item.

2.

Switch the front wiper switch to HI and LO.

3.

With operating the front wiper switch, check the status of “FR WIP REQ”.

Is the status of item normal?

YES

>> Replace IPDM E/R.

NO

>> GO TO 6.

6.

CHECK COMBINATION SWITCH

Perform the inspection of the combination switch. Refer to 

BCS-94, "Symptom Table"

.

Is combination switch normal?

YES

>> Replace BCM. Refer to 

BCS-96, "Exploded View"

.

NO

>> Repair or replace the applicable parts.

Terminals

Test item

Voltage (Approx.)

(+)

(

−

)

IPDM E/R

Ground

FRONT WIPER

Connector

Terminal

E10

4

Lo

Battery voltage

Off

0 V

5

Hi

Battery voltage

Off

0 V

Monitor item

Condition

Monitor status

FR WIP REQ

Front wiper switch HI

On

Hi

Off

Stop

Front wiper switch LO

On

Low

Off

Stop

Revision: 2008 October

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PRECAUTIONS

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< PRECAUTION >

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PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

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The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIRBAG” and “SEAT BELT” of this
Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIRBAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors while ignition switch is
ON or engine is running, never use air or electric power tools or strike near the sensor(s) with a hammer.
Heavy vibration may activate the sensor(s), deploy the airbag(s), possibly cause serious injury.
When using air or electric power tools or hammers, always turn OFF ignition switch, disconnect the battery,
and wait 3 minutes or more before performing any service.

Precaution for Procedure without Cowl Top Cover

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When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.

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< ON-VEHICLE REPAIR >

WASHER TANK

ON-VEHICLE REPAIR

WASHER TANK

Exploded View

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Removal and Installation

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REMOVAL

1.

Remove the clip (A).

2.

Pull out the washer tank inlet (1) from the washer tank.

3.

Remove the front bumper fascia. Refer to 

EXT-12, "Exploded

View"

.

4.

Disconnect washer pump connector.

5.

Disconnect washer level switch connector.

6.

Remove front washer tube and rear washer tube.

7.

Remove washer tank mounting bolts.

8.

Remove the washer tank from the vehicle.

INSTALLATION

Install in the reverse order of removal.

CAUTION:

Add water up to the top of the washer tank inlet after installing. Check that there is no leakage.

1.

Washer tank inlet

2.

Washer tank

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: Vehicle front

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WASHER PUMP

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WASHER PUMP

Exploded View

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Removal and Installation

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REMOVAL

1.

Remove the fender protector RH (front). Refer to 

EXT-23, "FENDER PROTECTOR : Exploded View"

.

2.

Disconnect washer pump connector.

3.

Remove front washer tube and rear washer tube.

4.

Remove washer pump from the washer tank.

5.

Remove the packing from the washer tank.

INSTALLATION

Install in the reverse order of removal.

CAUTION:

Never twist the packing when installing the washer pump.

1.

Washer tank

2.

Rear washer tube

3.

Packing

4.

Washer pump

5.

Front washer tube

6.

Washer pump connector

: Vehicle front

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WASHER LEVEL SWITCH

WASHER LEVEL SWITCH

Removal and Installation

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The washer level switch must be replaced together with the washer tank as an assembly. Refer to 

WW-120,

"Removal and Installation"

.

Revision: 2008 October

2009 Murano