Nissan Qashqai (2007-2010). Manual — part 1429

FRONT WIPER AND WASHER SYSTEM

WW-7

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

WW

N

O

P

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

front wiper INT operation condition and the intermittent operation delay interval judged value.

Front wiper INT operating condition

- Ignition switch ON
- Front wiper switch INT

Intermittent operation delay interval judgment

- BCM calculates the intermittent operation delay interval from the vehicle speed signal received from the

wiper dial position and the combination meter with CAN communication.

• IPDM E/R turns the integrated front wiper relay ON 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 after

the front wiper motor is stopped.

FRONT WIPER AUTO OPERATION

• BCM receives the wiping speed request signal from the rain sensor with the light and rain sensor serial link.
• BCM judges the auto wiping condition depending on the wiping speed request signal and the rain sensor

sensitivity setting under front wiper AUTO operating condition.

• BCM transmits the front wiper request signals (LO or HI) to the IPDM E/R through CAN communication line

according to the auto wiping condition.
NOTE:
When the wiper volume is turned down at 1 level with front wiper AUTO operating condition, BCM transmits
front wiper request signal (LO) to IPDM E/R with CAN communication.

Front wiper AUTO operating condition

- Ignition switch ON
- Front wiper switch AUTO

Rain sensor sensitivity setting

- BCM determines rain sensor sensitivity according to a wiper volume.

Wiper intermittent dial posi-

tion

Intermittent

operation

interval

Intermittent operation delay Interval (s)

Vehicle speed

Vehicle stopped or

less than 5 km/h

(3.1 MPH)

5 km/h (3.1 MPH)

or more or less

than 35 km/h (21.7

MPH)

35 km/h (21.7

MPH) or more or

less than 65 km/h

(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

JPLIA0094GB

WW-8

< FUNCTION DIAGNOSIS >

FRONT WIPER AND WASHER SYSTEM

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

request signal (LO or HI).

• Light and rain sensor transmits rain sensor signal to BCM for HI operation immediately after sensing the

raindrops increase under the wiper motor LO operating with the front wiper switch AUTO.

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 auto stop signal from the front wiper motor and detects the front wiper

motor position (stop position/except stop position).

• 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 3 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 DROP WIPE OPERATION

• BCM controls the front wiper to operate once according to the conditions of front wiper drop wipe operation.

Front wiper drop wipe operating condition

- Ignition switch ON
- Front wiper switch OFF
- Front washer switch OFF

Wiper intermittent dial posi-

tion

Sensitivity

1

High sensitivity

2

3

Medium

−

high sensitivity

4

5

Low

−

medium sensitivity

6

7

Low sensitivity

JPLIA0095GB

FRONT WIPER AND WASHER SYSTEM

WW-9

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

WW

N

O

P

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

wiper operate once three seconds after front wiper operation linked with washer.

• IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).

FRONT WIPER FAIL

−

SAFE OPERATION

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

PCS-28, "Fail Safe"

.

• BCM performs fail-safe operation when light and rain sensor or light and rain sensor-related systems are

malfunctioning. Refer to

BCS-59, "Fail Safe"

.

Component Parts Location

INFOID:0000000000896757

Component Description

INFOID:0000000000896818

1.

Combination switch

2.

Combination meter

3.

Light and rain sensor

4.

BCM

5.

Washer pump

6.

IPDM E/R

7.

Front wiper motor

A.

Inside mirror cover inside

B.

Over the glove box

C.

Radiator core support (RH)

D.

Engine room (left side)

E.

Cowl top, left side of engine room

F.

Cowl top, right side of engine room

JPLIA0185ZZ

WW-10

< FUNCTION DIAGNOSIS >

FRONT WIPER AND WASHER SYSTEM

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.

Combination switch
(Wiper & washer switch)

Refer to

BCS-9, "System Diagram"

.

Combination meter

Transmits the vehicle speed signal to BCM with CAN communication.

Light and rain sensor

Detects water droplets on the windshield with infrared rays, and transmits the rain sensor signal
to BCM through the light and rain sensor serial link.