Infiniti M35/M45 Y50. Manual - part 1158

FRONT WIPER AND WASHER SYSTEM

WW-37

C

D

E

F

G

H

I

J

L

M

A

B

WW

3. 

CHECK CIRCUIT BETWEEN IPDM E/R AND FRONT WIPER MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector and front wiper motor connector.

3.

Check continuity between IPDM E/R harness connector (A) and
front wiper motor harness connector (B).

4.

Check continuity between IPDM E/R harness connector (A) and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

4. 

CHECK FRONT WIPER REVERSE RELAY

1.

Remove front wiper reverse relay.

2.

Check continuity between front wiper reverse relay terminals.

OK or NG

OK

>> GO TO 5.

NG

>> Replace front wiper reverse relay.

5. 

CHECK CIRCUIT BETWEEN FRONT WIPER REVERSE RELAY AND GROUND 

Check continuity between front wiper reverse relay harness connec-
tor and ground.

OK or NG

OK

>> Replace front wiper motor. Refer to 

WW-44, "Disassem-

bly and Assembly of Front Wiper Drive Assembly"

 .

NG

>> Repair harness or connector.

A

B

Continuity

Connector

Terminal Connector

Terminal 

E7

23

E27

3

Yes

A

Ground

Continuity

Connector

Terminal 

E7

23

No

SKIB4682E

Front wiper reverse relay terminals

Continuity

3

4

Yes

SKIB4660E

Front wiper reverse relay 

connector

Terminal 

Ground

Continuity

E33

4

Yes

SKIB4674E

WW-38

FRONT WIPER AND WASHER SYSTEM

Only Front Wiper HI Does Not Operate

NKS003WS

1. 

ACTIVE TEST

With CONSULT-II

1.

Select “IPDM E/R” on CONSULT-II. Select “ACTIVE TEST” on
“SELECT DIAG MODE” screen.

2.

Select “FRONT WIPER” on “SELECT TEST ITEM” screen.

3.

Touch “HI” screen.

Without CONSULT-II

Start up auto active test. Refer to 

PG-23, "Auto Active Test"

 .

Does front wiper operate normally?

YES

>> Refer to 

LT-239, "Combination Switch Inspection"

 .

NO

>> GO TO 2.

2. 

CHECK IPDM E/R OUTPUT SIGNAL

1.

Remove front wiper reverse relay.

2.

Check voltage between front wiper reverse relay harness con-
nector and ground.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3. 

CHECK CIRCUIT BETWEEN IPDM E/R AND FRONT WIPER REVERSE RELAY

1.

Disconnect IPDM E/R connector.

2.

Check continuity between IPDM E/R harness connector (A) and
front wiper reverse relay harness connector (B).

3.

Check continuity between IPDM E/R harness connector (A) and
ground.

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PG-31, "Removal and Installation of IPDM E/R"

 .

NG

>> Repair harness or connector.

SKIA3486E

Terminal

Voltage 

(Approx.)

(+)

(-)

Front wiper 

reverse relay

connector

Terminal

E33

5

Ground

Battery voltage

SKIB4958E

A

B

Continuity

Connector

Terminal Connector

Terminal 

E7

19

E33

5

Yes

A

Ground

Continuity

Connector

Terminal 

E7

19

No

SKIB4959E

FRONT WIPER AND WASHER SYSTEM

WW-39

C

D

E

F

G

H

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J

L

M

A

B

WW

4. 

CHECK FRONT WIPER REVERSE RELAY

Check continuity between front wiper reverse relay terminals.

OK or NG

OK

>> GO TO 5.

NG

>> Replace front wiper reverse relay.

5. 

CHECK CIRCUIT BETWEEN IPDM E/R AND FRONT WIPER MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector and front wiper motor connector.

3.

Check continuity between IPDM E/R harness connector (A) and
front wiper motor harness connector (B).

OK or NG

OK

>> GO TO 6.

NG

>> Repair harness or connector.

Front wiper reverse 

relay terminals

Condition

Continuity

3

5

Applying battery voltage to between 
terminals 1 and 2

Yes

No battery voltage

No

SKIB4671E

A

B

Continuity

Connector

Terminal Connector

Terminal 

E7

31

E27

2

Yes

SKIB4679E

WW-40

FRONT WIPER AND WASHER SYSTEM

6. 

CHECK IPDM E/R

With CONSULT-II

1.

Connect IPDM E/R connector and front wiper motor connector.

2.

Install front wiper reverse relay.

3.

Select “IPDM E/R” on CONSULT-II. Select “ACTIVE TEST” on “SELECT DIAG MODE” screen.

4.

Select “FRONT WIPER” on “SELECT TEST ITEM” screen.

5.

Touch “HI” screen.

6.

Check voltage between IPDM E/R harness connector and
ground while front wiper HI is operating.

Without CONSULT-II

1.

Connect IPDM E/R connector and front wiper motor connector.

2.

Install front wiper reverse relay.

3.

Start up auto active test. Refer to 

PG-23, "Auto Active Test"

 .

4.

Check voltage between IPDM E/R harness connector and ground while front wiper HI is operating.

OK or NG

OK

>> Replace front wiper motor. Refer to 

WW-44, "Disassembly and Assembly of Front Wiper Drive

Assembly"

 .

NG

>> Replace IPDM E/R. Refer to 

PG-31, "Removal and Installation of IPDM E/R"

 .

Only Front Wiper Intermittent Does Not Operate

NKS003WT

1. 

CHECK COMBINATION SWITCH

With CONSULT-II

1.

Select “BCM” on CONSULT-II, and select “WIPER” on “SELECT
TEST ITEM” screen.

2.

Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
Make sure that “FR WIPER INT”, turn ON-OFF according to
wiper switch operation.

Without CONSULT-II

Refer to 

LT-239, "Combination Switch Inspection"

 .

OK or NG

OK

>> Replace BCM. Refer to 

BCS-15, "Removal and Installa-

tion of BCM"

 .

NG

>> Check combination switch (wiper switch) Refer to 

LT-

239, "Combination Switch Inspection"

 .

Terminal

Voltage 

(Approx.)

(+)

(-)

IPDM E/R
connector

Terminal

E7

31

Ground

0 V

Terminal

Voltage 

(Approx.)

(+)

(-)

IPDM E/R
connector

Terminal

E7

31

Ground

0 V

SKIB4678E

PKIB0110E