Infiniti Q45. Manual - part 917

FRONT WIPER AND WASHER SYSTEM (WITH RAIN SENSOR)

WW-21

C

D

E

F

G

H

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A

B

WW

Front Wiper Does Not Operate in Rain

NKS001FD

1. 

CHECK CONDITIONS OF WINDSHIELD (RAIN SENSOR DETECTION AREA)

Make sure that rain sensor detection area of windshield was high temperature [approximately 70 

°

C (158 

°

F)

or more].

OK or NG

OK

>> GO TO 2.

NG

>> Wait for a while until the temperature of windshield falls.

2. 

CHECK RAIN SENSOR OUTPUT SIGNAL

With CONSULT-II

1.

Select “IVMS” on CONSULT-II. And select “WIPER” on “SELECT TEST ITEM” screen.

2.

Select “DATA MONITOR” on “SELECT DIAG MODE” screen.

3.

Make sure that the value decreases from 87 % when “RAIN
SENSOR” of “DATA MONITOR” sprinkles water with spray.

Without CONSULT-II

Sprinkle water to sensor detection area using spray, and then check voltage waveform between BCM harness
connector R4 terminal 134 and ground when wiper operates.

OK or NG

OK

>> Replace BCM.

NG

>> Replace rain sensor if voltage waveform with wiper stopped is output or if “RAIN SENSOR” of

“DATA MONITOR” on CONSULT-II is still 87 %.

When Ignition Switch Is Turned ON with Front Wiper Switch Turned to INT Posi-
tion, Front Wiper Operates though There Are No Water Drops

NKS001FE

1. 

CHECK CONDITIONS OF WINDSHIELD (RAIN SENSOR DETECTION AREA)

Check rain sensor detection area of windshield for dirt such as greases.
OK or NG

OK

>> Calibration malfunctions. Refer to 

WW-36, "Calibration Procedure of Rain Sensor"

 .

NG

>> Clean rain sensor detection area of windshield fully.

When Ignition Switch Is Turned ON with Front Wiper Switch Turned to INT Posi-
tion, Front Wiper Does Not Operate though There Are Remarkable Water Drops

NKS001FF

1. 

CHECK FRONT WIPER OPERATION

1.

Sprinkle water to sensor detection area using spray.

2.

Turn front wiper switch to INT position.

3.

Make sure that wiper operates when ignition switch is turned ON. (Wiper does not operate when there are
no remarkable water drops or when moisture is like a film.)

OK or NG

OK

>> Normal

NG

>> Calibration malfunctions. Refer to 

WW-36, "Calibration Procedure of Rain Sensor"

 .

PKIA9814E

134 - Ground

: Refer to 

WW-13, "Terminals and Reference Values for BCM"

 .

WW-22

FRONT WIPER AND WASHER SYSTEM (WITH RAIN SENSOR)

Sensitivity of Rain Sensor Cannot be Controlled

NKS001FG

1. 

CHECK INTERMITTENT WIPER VOLUME INPUT SIGNAL

 With CONSULT-II

1.

Select “IVMS” on CONSULT-II. And select “WIPER” on “SELECT TEST ITEM” screen.

2.

Select “DATA MONITOR” on “SELECT DIAG MODE” screen.

3.

Make sure that “INT RESIST” changes in order from approx. 0
to 1 kohm according to operation of intermittent wiper volume.

 Without CONSULT-II

1.

Turn ignition switch ON.

2.

Check voltage between BCM harness connector M4 terminal 48
and ground while turning intermittent wiper volume.

OK or NG

OK

>> Replace BCM.

NG

>> GO TO 2.

2. 

CHECK FRONT WIPER SWITCH

Check front wiper switch. Refer to 

WW-30, "Front Wiper Switch Inspection"

 .

OK or NG

OK

>> Check the following.

●

Harness for open or short between BCM and intermittent wiper volume

●

Front wiper switch ground circuit

NG

>> Replace front wiper switch.Refer to 

WW-34, "Removal and Installation of Front Wiper Switch"

 .

Short interval

: Approx. 0 kohm

Long interval

: Approx. 1 kohm

SEL506W

Short interval

: Approx. 0 V

Long interval

: Approx. 3.6 V

PKIB1546E

FRONT WIPER AND WASHER SYSTEM (WITH RAIN SENSOR)

WW-23

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B

WW

Intermittent Wiper Does Not Operate When Rain Sensor is Canceled

NKS001FH

1. 

CHECK INTERMITTENT FRONT WIPER SWITCH INPUT SIGNAL

 With CONSULT-II

1.

Select “IVMS” on CONSULT-II. And select “WIPER” on “SELECT TEST ITEM” screen.

2.

Select “DATA MONITOR” on “SELECT DIAG MODE” screen.

3.

Make sure that “INT SW” turns ON-OFF according to operation
of front wiper switch.

NOTE:
When “DATA MONITOR” is operating, intermittent wiper does
not operate.

 Without CONSULT-II

Check front wiper switch (INT) in switch monitor mode. Refer to 

WW-17, "SWITCH MONITOR"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Check the following.

●

Front wiper switch: Refer to 

WW-30, "Front Wiper Switch Inspection"

 .

●

Harness for open or short between BCM and front wiper switch

●

Front wiper switch ground circuit

When front wiper switch is INT

: INT SW ON

When front wiper switch is OFF

: INT SW OFF

SEL503W

WW-24

FRONT WIPER AND WASHER SYSTEM (WITH RAIN SENSOR)

2. 

CHECK FRONT WIPER AUTO STOP SIGNAL

 With CONSULT-II

Make sure “WIPR AUTO STP” changes from “IGN” to “GND” accord-
ing to operation of front wiper switch.

 Without CONSULT-II

1.

Turn ignition switch ON.

2.

Turn front wiper switch to LO or HI position.

3.

Check voltage between BCM harness connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Check the following.

●

Front wiper motor

●

Front wiper motor ground circuit

●

Harness for open or short between BCM and front wiper motor

Front wiper is stopped.

: WIPR AUTO STP IGN

Front wiper is operating.

: WIPR AUTO STP GND

SEL504W

Terminal

Condition

Voltage

 (+)

(

−

)

Connector

Terminal

E204

124

Ground

Moving

Approx. 0 V

Stopped

Battery voltage

PKIA5169E