Nissan March K13. Manual - part 672

COMPONENT PARTS

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Washer Switch

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• Washer switch is integrated in combination switch.
• Combination switch switches polarity between front washer operating and rear washer operating to supply

power to the washer pump on ground.

Washer switch

Refer to 

WW-5, "Washer Switch"

.

Front wiper motor

• IPDM E/R controls front wiper operation.
• Front wiper auto stop signal is transmitted to IPDM E/R.

Rear wiper motor

• BCM controls rear wiper operation.
• Rear wiper auto stop signal is transmitted to BCM.

Washer pump

• Washer fluid is sprayed according to washer switch states.
• Switching between front washer and rear washer is performed according to the voltage polarity 

change to washer pomp.

Part

Description

JPLIA0163GB

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< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

FRONT WIPER AND WASHER SYSTEM

FRONT WIPER AND WASHER SYSTEM : System Diagram

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FRONT WIPER AND WASHER SYSTEM : System Description

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OUTLINE

The front wiper is controlled by each function of BCM and IPDM E/R.

Control by BCM

• Combination switch reading function
• Front wiper control function

Control by IPDM E/R

• Front wiper control function
• Relay control function

FRONT WIPER BASIC OPERATION

• BCM detects the combination switch condition by the combination switch reading function.
• BCM transmits the front wiper request signal to IPDM E/R via CAN communication depending on each oper-

ating condition of the front wiper.

• IPDM E/R turns ON/OFF the integrated front wiper relay and the front wiper high relay according to the front

wiper request signal. IPDM E/R provides the power supply to operate the front wiper HI/LO operation.

FRONT WIPER LO OPERATION

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

front wiper LO operating condition.

Front wiper LO operating condition

- Ignition switch ON
- Front wiper switch LO or front wiper switch MIST (while pressing)
• IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).

FRONT WIPER HI OPERATION

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

front wiper HI operating condition.

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

NNLIB0013GB

SYSTEM

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< SYSTEM DESCRIPTION >

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• BCM transmits the front wiper request signal (INT) to IPDM E/R via 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 via 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 operation linked with vehicle speed. Front wiper
intermittent operation can be set to operation linked or not linked with vehicle speed using CONSULT-III. Refer
to 

WW-13, "WIPER : CONSULT-III 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 
- Wiper intermittent dial position

Unit: Second

*

1

: When operation setting is not linked with vehicle speed. 

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:Position for models without wiper intermittent dial. 

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

Vehicle speed

0 – 5 km/h

(0 – 3.1 MPH)

5 – 65 km/h

(3.1 – 40.4 MPH)*

1

65 km/h (40.4 MPH) or more

1

Short

↑

↓

Long

1

0.4

0.24

2

2.5

1

0.6

3

5

2

1.2

4*

2

7.5

3

1.8

5

12.5

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3

6

25

10

6

7

40

16

9.6

JPLIA1256GB

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< SYSTEM DESCRIPTION >

SYSTEM

• 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 via 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 AND WASHER SYSTEM : Fail-Safe

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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

If No CAN Communication Is Available With BCM

JPLIA0410GB

Control part

Fail-safe operation

Cooling fan

• The cooling fan relay turn ON when the ignition switch is turned ON (Cooling fan HI operation)
• The cooling fan relay turn OFF when the ignition switch is turned OFF

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
• 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