Nissan Murano. Manual - part 1486

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< SYSTEM DESCRIPTION >

FRONT WIPER AND WASHER SYSTEM

Front wiper HI operating condition

- Ignition switch ON
- Front wiper switch HI
• IPDM E/R turns ON the integrated front wiper relay and the front wiper high relay according to the front wiper

request signal (HI).

FRONT WIPER INT OPERATION

• BCM transmits the front wiper request signal (INT) to IPDM E/R with CAN communication depending on the

front wiper INT operating condition and intermittent operation delay interval according to the wiper intermit-
tent dial position.

Front wiper INT operating condition

- Ignition switch ON
- Front wiper switch INT
• IPDM E/R turns ON the integrated front wiper relay so that the front wiper is operated only once according to

the front wiper request signal (INT).

• BCM detects stop position/except stop position of the front wiper motor according to the front wiper stop

position signal received from IPDM E/R with CAN communication.

• BCM transmits the front wiper request signal (INT) again after the intermittent operation delay interval.

NOTE:
Factory setting of the front wiper intermittent operation is the operation without vehicle speed. Front wiper
intermittent operation can be set to the operation with vehicle speed by CONSULT. Refer to 

WW-20, "WIPER :

CONSULT Function (BCM - WIPER)"

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Front wiper intermittent operation with vehicle speed

• BCM calculates the intermittent operation delay interval from the following
- Vehicle speed signal (received from the combination meter with CAN communication)
- Wiper intermittent dial position

*: When without vehicle speed setting

FRONT WIPER AUTO STOP OPERATION

• BCM stops transmitting the front wiper request signal when the front wiper switch is turned OFF.
• IPDM E/R detects the front wiper stop position signal from the front wiper motor and detects the front wiper

motor position (stop position/except stop position).

Wiper intermittent 

dial position

Intermittent 

operation 

interval

Intermittent operation delay Interval (s)

Vehicle speed

0 – 5 km/h

(0 – 3.1 MPH)

5 – 35 km/h

(3.1 – 21.7 MPH)

35 – 65 km/h*

(21.7 – 40.4 MPH)

65 km/h (40.4 MPH) 

or more

1

Short

↑

↓

Long

0.8

0.6

0.4

0.24

2

4

3

2

1.2

3

10

7.5

5

3

4

16

12

8

4.8

5

24

18

12

7.2

6

32

24

16

9.6

7

42

31.5

21

12.6

JPLIA1256GB

FRONT WIPER AND WASHER SYSTEM

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• When the front wiper request signal is stopped, IPDM E/R turns ON the front wiper relay until the front wiper

motor returns to the stop position.

NOTE:
• BCM stops the transmitting of the front wiper request signal when the ignition switch is OFF.
• IPDM E/R turns the front wiper relay OFF when the ignition switch is OFF.

FRONT WIPER OPERATION LINKED WITH WASHER

• BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the

washer linked operating condition of the front wiper.

• BCM transmits the front wiper request signal (LO) so that the front wiper operates approximately 2 times

when the front washer switch OFF is detected.

Washer linked operating condition of front wiper

- Ignition switch ON
- Front washer switch ON (0.4 second or more)
• IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).
• The washer pump is grounded through the combination switch with the front washer switch ON.

FRONT WIPER FAIL-SAFE OPERATION

IPDM E/R performs the fail-safe function when the front wiper stop position circuit is malfunctioning. Refer to

PCS-32, "Fail-safe"

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JPLIA0410GB

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< SYSTEM DESCRIPTION >

FRONT WIPER AND WASHER SYSTEM

WITHOUT RAIN SENSOR : Component Parts Location

INFOID:0000000009719716

WITHOUT RAIN SENSOR : Component Description

INFOID:0000000009719717

1.

Combination switch

2.

Combination meter

3.

Washer pump

4.

Front wiper motor

5.

IPDM E/R

6.

BCM

A.

Radiator core support (RH)

B.

Cowl top, left side of engine room

C.

Engine room (left side)

D.

Behind combination meter

JPLIA0908ZZ

Part

Description

BCM

• Judges each switch status by the combination switch reading function.
• Requests (with CAN communication) the front wiper relay and the front wiper high relay ON to 

IPDM E/R.

IPDM E/R

• Controls the integrated relay according to the request (with CAN communication) from BCM.
• Performs the auto stop control of the front wiper.

FRONT WIPER AND WASHER SYSTEM

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< SYSTEM DESCRIPTION >

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Combination switch
(Wiper & washer switch)

Refer to 

BCS-10, "System Diagram"

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Combination meter

Transmits the vehicle speed signal to BCM with CAN communication.

Part

Description