Infiniti Q45. Manual — part 918

FRONT WIPER AND WASHER SYSTEM (WITH RAIN SENSOR)

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3.

CHECK IGNITION SWITCH ON SIGNAL

With CONSULT-II

Make sure that “IGN ON SW” turns ON-OFF according to operation
of ignition switch.

Without CONSULT-II

Check voltage between BCM harness connector M4 terminal 68 and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> Check the following.

●

10A fuse [No. 1, located in fuse block (J/B) No. 1]

●

Harness for open or short between fuse and BCM

4.

CHECK FRONT WIPER OPERATION

With CONSULT-II

1.

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

2.

Select “ACTIVE TEST” on “SELECT DIAG MODE” screen.

3.

Touch “ON” screen.

4.

Make sure that front wiper motor operates.

NOTE:
If CONSULT-II is not available, skip this procedure and refer to

WW-27, "Front Wiper and Washer Activate Individually but Not
in Combination"

.

OK or NG

OK

>> Replace BCM.

NG

>> Refer to

WW-29, "Front Wiper and Washer Activate Indi-

vidually but Intermittent Wiper and Washer Combination
Does Not Operate"

.

When ignition switch is ON

: IGN ON SW ON

When ignition switch is ACC or OFF

: IGN ON SW OFF

PKIA0311E

When ignition switch is ON

: Battery voltage

When ignition switch is ACC or OFF

: Approx. 0 V

PKIA5170E

Front wiper motor should operate.

SEL494W

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FRONT WIPER AND WASHER SYSTEM (WITH RAIN SENSOR)

Intermittent Time of Front Wiper Cannot be Controlled When Rain Sensor is
Canceled

NKS001FI

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)

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Front Wiper and Washer Activate Individually but Not in Combination

NKS001FJ

1.

CHECK WASHER 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 “WASH SW” turns ON-OFF according to opera-
tion of intermittent wiper switch.

Without CONSULT-II

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

WW-17, "SWITCH MONITOR"

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OK or NG

OK

>> Replace BCM.

NG

>> Check harness for open or short between BCM and front wiper switch.

Intermittent Wiper Operates, but There Is No Change in Intermittent Time
between When Vehicle Is Stopped and Running

NKS001FK

1.

CHECK SYMPTOM

Check that speedometer in combination meter operates normally.

OK or NG

OK

>> GO TO 2.

NG

>> Check the vehicle speed signal. Refer to

DI-16, "Trouble Diagnosis"

.

2.

CHECK FUNCTION

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 of the vehicle speed signal in “VHCL SPEED SE”.

Without CONSULT-II

GO TO 3.

OK or NG

OK

>> System is OK.

NG

>> GO TO 3.

When front washer switch is ON

: WASH SW ON

When front washer switch is OFF

: WASH SW OFF

SEL507W

Monitor item [OPERATION]

Contents

VHCL SPEED SE

“RUN/STOP”

●

“RUN” is displayed when the present vehi-
cle speed is 5 km/h (3.10 MPH) and more.

●

“STOP” is displayed when the present
vehicle speed is less than or equal to 2 km/
h (1.24 MPH).

SKIA4241E

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FRONT WIPER AND WASHER SYSTEM (WITH RAIN SENSOR)

3.

CHECK VEHICLE SPEED INPUT/OUTPUT

Start the engine, and check voltage between BCM harness connec-
tor M4 terminal 49 and ground, using an oscilloscope.

OK or NG

OK

>> Replace BCM.

NG

>> GO TO 4.

4.

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect BCM connectors and combination meter connector.

3.

Check continuity between BCM harness connector M4 terminal
49 and combination meter harness connector M41 terminal 18.

4.

Check continuity between BCM harness connector M4 terminal
49 and ground.

OK or NG

OK

>> Replace combination meter.

NG

>> Repair harness or connector.

Voltage waveform
[When vehicle speed is approx. 40 km/h (25 MPH)]

PKIB0602E

49 - 18

: Continuity should exist.

49 - Ground

: Continuity should not exist.

PKIA5173E