Infiniti M35/M45 Y50. Manual - part 1154

FRONT WIPER AND WASHER SYSTEM

WW-21

C

D

E

F

G

H

I

J

L

M

A

B

WW

33

GR

Combination 
switch output 4

ON

Lighting, turn, wiper 
OFF
(Wiper dial position 4)

Any of several con-
ditions below

●

Wiper dial position 1

●

Wiper dial position 5

●

Wiper dial position 6

Approx. 1.2 V

OFF

(Wiper dial position 4)

Approx. 7.0 - 7.5 V

34

L

Combination 
switch output 3

ON

Lighting, turn, wiper 
OFF

Any of several con-
ditions below

●

Wiper dial position 1

●

Wiper dial position 2

●

Wiper dial position 3

Approx. 1.2 V

OFF

(Wiper dial position 4)

Approx. 7.0 - 7.5 V

35

SB

Combination 
switch output 2

ON

Lighting, turn, wiper 
OFF
(Wiper dial position 4)

Any of several con-
ditions below

●

Front wiper switch INT

●

Front wiper switch HI

Approx. 1.2 V

OFF

Approx. 7.0 - 7.5 V

Terminal 

No.

Wire 

color

Signal name

Measuring condition

Reference value

Ignition 

switch

Operation or condition

PKIB4958J

PKIB4960J

PKIB4958J

PKIB4960J

PKIB4958J

PKIB4960J

WW-22

FRONT WIPER AND WASHER SYSTEM

36

V

Combination 
switch output 1

ON

Lighting, turn, wiper 
OFF
(Wiper dial position 4)

Any of several con-
ditions below

●

Front wiper switch 
MIST

●

Front wiper switch LO

●

Front washer switch

Approx. 1.2 V

OFF

(Wiper dial position 4)

Approx. 7.0 - 7.5 V

38

W

Ignition switch 

(ON) 

ON

—

Battery voltage

39

L

CAN-H

—

—

—

40

P

CAN-L

—

—

—

42

P

Battery power 
supply

OFF

—

Battery voltage

52

B

Ground

ON

—

Approx. 0 V

55

W

Battery power 
supply

OFF

—

Battery voltage

Terminal 

No.

Wire 

color

Signal name

Measuring condition

Reference value

Ignition 

switch

Operation or condition

PKIB4958J

PKIB4960J

FRONT WIPER AND WASHER SYSTEM

WW-23

C

D

E

F

G

H

I

J

L

M

A

B

WW

Terminals and Reference Values for IPDM E/R

NKS003WI

NOTE:

●

During LO operation, terminal No. 32 detects front wiper motor stopping or moving by front wiper auto stop signal.

●

During HI operation, terminal No. 32 detects front wiper motor stopping or moving by front wiper auto stop signal that is output from
terminal No. 44 (not from terminal No. 32).

How to Perform Trouble Diagnoses

NKS003WJ

1.

Confirm the symptoms and customer complaint.

2.

Understand operation description and function description. Refer to 

WW-4, "System Description"

 .

3.

Perform the Preliminary Check. Refer to 

WW-24, "Preliminary Check"

 .

4.

Check symptom and repair or replace the cause of malfunction.

5.

Does the front wiper and washer operate normally? If YES, GO TO 6. If NO, GO TO 4.

6.

INSPECTION END

Terminal 

No.

Wire 

color

Signal name

Measuring condition

Reference value

Ignition 

switch

Operation or condition

19

O

High speed signal

ON

—

Battery voltage

23

V

Low speed signal

ON

Wiper switch

OFF

Approx. 0 V

LO

Battery voltage

31

L/B

High speed ground

ON

—

Approx. 0 V

32

L/Y

Wiper auto stop signal

NOTE

ON

Wiper operating

Approx. 0 V

Wiper stopped

Battery voltage

35

R

Front wiper reverse relay signal

ON

Wiper switch

OFF

Battery voltage

HI

Approx. 0 V

38

B

Ground

ON

—

Approx. 0 V

44

G/L

Front washer motor and front wiper 
auto stop signal (HI) power supply

ON

—

Battery voltage

49

L

CAN-H

—

—

—

50

P

CAN-L

—

—

—

51

B

Ground

ON

—

Approx. 0 V

WW-24

FRONT WIPER AND WASHER SYSTEM

Preliminary Check

NKS003WK

CHECK POWER SUPPLY AND GROUND CIRCUIT

1. 

CHECK FUSES AND FUSIBLE LINK

Check for blown fuses and fusible link.

Refer to 

WW-13, "Wiring Diagram — WIPER —"

 .

OK or NG

OK

>> GO TO 2.

NG

>> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse

or fusible link. Refer to 

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

 .

2. 

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connectors.

3.

Check voltage between BCM harness connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

3. 

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness or connector.

Unit

Power source

Fuse and fusible link No.

BCM

Battery

F

21

Ignition switch ON or START

1

Front washer motor, front washer pump and front wiper HI auto 
stop signal

Ignition switch ON or START

84

Front wiper motor, front wiper low relay, front wiper high relay

Battery

73

Front wiper reverse relay

Ignition switch ON or START

12

Terminal

Ignition switch position

(+)

(-)

OFF

ON

BCM 

connector

Terminal

M1

38

Ground

Approx. 0 V

Battery voltage

M2

42

Battery voltage

Battery voltage

55

Battery voltage

Battery voltage

PKIA7520E

BCM connector

Terminal

Ground

Continuity

M2

52

Yes

SKIB5125E