Infiniti M45 (Y34). Manual - part 811

FRONT WIPER AND WASHER SYSTEM

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Intermittent Wiper Operates, But There is No Change in Intermittent Time 
Between When Vehicle is Stopped and Moving

AKS002LK

1. 

CHECK THE SYMPTOM

Check that the speedometer in the combination meter operates normally.

OK or NG?

OK

>> GO TO 2

NG

>> Check vehicle speed signal. Refer to “Work Flow” in DI section.

2. 

CHECK VEHICLE SPEED SENSOR PULL UP VOLTAGE

 With CONSULT-II

●

With “VHCL SPEED SE” on “DATAMONITOR”, check the vehi-
cle speed signal. Refer to 

SE-44, "DATA MONITOR"

 .

 Without CONSULT-II

●

GO TO 3

OK or NG

OK

>> System is OK.

NG

>> GO TO 3.

3. 

VEHICLE SPEED INPUT/OUTPUT INSPECTION

1.

Start engine.

2.

Check voltage between BCM harness connector M4 terminal 49
(PU/W) and body ground, using an oscilloscope.

OK or NG?

OK

>> Replace BCM.

NG

>> GO TO 4.

PKIA6073E

49 (PU/W) - Ground

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

PKIA5983E

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FRONT WIPER AND WASHER SYSTEM

4. 

HARNESS CONTINUITY INSPECTION

1.

Turn ignition switch OFF.

2.

Disconnect BCM and combination meter.

3.

Check continuity between BCM harness connector M4 terminal
49 (PU/W) and combination meter M41 terminal 38 (PU/W), and
between BCM harness connector M4 terminal 49 (PU/W) and
ground.

OK or NG?

OK

>> Replace meter control unit.

NG

>> Repair or replace harness.

Wiper and Washer Activate Individually But Intermittent Wiper and Washer 
Combination Does Not Operate

AKS002LL

1. 

CHECK POWER SUPPLY CIRCUIT FOR FRONT WIPER RELAY

1.

Turn ignition switch OFF.

2.

Remove front wiper relay.

3.

Turn ignition switch ON.

4.

Check voltage between front wiper relay harness connector E2-
2 terminal 1 (LG) and ground.

OK or NG

OK

>> GO TO 2

NG

>> Check the following.

●

20A fuse [No. 34, located in fuse block (J/B) No.2]

●

Harness for open or short between front wiper relay and fuse

2. 

CHECK GROUND CIRCUIT FOR FRONT WIPER RELAY

1.

Turn ignition switch OFF.

2.

Check continuity between front wiper relay harness connector
E2-2 terminal 5 (B) and ground.

OK or NG

OK

>> GO TO 3

NG

>> Repair harness.

Terminals

Continuity

Connector

Terminal

(Wire color)

Connector

Terminal

(Wire color)

M4

49 (PU/W)

M41

38 (PU/W)

Yes

49 (PU/W)

Ground

No

PKIA5984E

1 (LG) - Ground

: Battery voltage should exist.

PKIA5174E

5 (B) - Ground

: Continuity should exist.

PKIA5175E

FRONT WIPER AND WASHER SYSTEM

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3. 

CHECK FRONT WIPER RELAY

Apply battery voltage between front wiper relay terminal 1and 2, and
check continuity between terminal 3 and 5.

OK or NG

OK

>> GO TO 4

NG

>> Replace front wiper relay.

4. 

CHECK BCM OUTPUT SIGNAL

1.

Connect front wiper relay.

2.

Turn ignition switch ON.

3.

Check voltage between BCM harness connector E204 terminal
128 (R/Y) and ground.

OK or NG

OK

>> Repair harness between BCM and front wiper relay.

NG

>> Replace BCM.

Wiper and Washer Switch Circuit Check 

AKS004YS

INSPECTION OF SWITCH CIRCUIT 

Check continuity between each terminal when wiper washer switch
is operating using a circuit tester.

Removal and Installation of Front Wiper Arms, Adjustment of Wiper Arms Stop 
Location 

AKS003WD

REMOVAL

1.

Operate wiper motor, and stop it at the auto stop position.

2.

Remove wiper arm mounting nuts and wiper arm from vehicle.

3 - 5

: Continuity should exist.

PKIA6829E

Terminals

Voltage

(+)

(-)

Condition

Connector

Terminal

(Wire color)

E204

128 (R/Y)

Ground

Wash

Approx. 0V (for 0.7 sec.)

OFF

Battery voltage

PKIA5176E

Operation interval 

(intermittent wiper with vehicle speed detection function)

Resistance value

1, interval (Max.)

Approx. 1.0 k

Ω

2,

Approx. 0.6 k

Ω

3,

Approx. 0.3 k

Ω

4, interval (Min.)

Approx. 0 k

Ω

PKIA5184E

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FRONT WIPER AND WASHER SYSTEM

INSTALLATION

1.

Clean up the pivot area as illustrated. This will reduce possibility
of wiper arm looseness.

2.

Prior to wiper arm installation, turn on wiper switch to operate
wiper motor and then turn it “OFF” (auto stop).

3.

Push wiper arm onto pivot shaft, paying attention to blind spline.

4.

Lift the blade up and then set it down onto glass surface to set
the blade center to clearance “L1” & “L2” immediately before
tightening nut.

5.

Eject washer fluid. Turn on wiper switch to operate wiper motor
and then turn it “OFF”.

6.

Ensure that wiper blades stop within clearance “L1” & “L2”.

●

Tighten wiper arm nuts to the specified torque.

ADJUSTMENT

Refer to 

WW-22, "INSTALLATION"

 .

Removal and Installation of Front Wiper Motor and Linkage

AKS003WE

REMOVAL

1.

Remove wiper arm. Refer to 

WW-21, "Removal and Installation

of Front Wiper Arms, Adjustment of Wiper Arms Stop Location"

 .

2.

Remove cowl top cover. Refer to 

EI-20, "COWL TOP"

    in  “EI”

section.

3.

Disconnect wiper motor connector.

4.

Remove wiper motor and linkage mounting bolts, and remove
wiper motor and linkage.

INSTALLATION

1.

Install wiper motor and linkage to the vehicle.

2.

Connect wiper motor assembly to the connector. Turn wiper switch ON to operate wiper motor, then turn
wiper switch OFF (auto stop).

3.

Install cowl top cover. Refer to 

EI-20, "COWL TOP"

  in “EI” section.

4.

Install wiper arms. Refer to 

WW-21, "Removal and Installation of Front Wiper Arms, Adjustment of Wiper

Arms Stop Location"

 .

CAUTION:

●

Do not drop the wiper motor or cause it to contact other parts.

SEL024J

Clearance “L1”

: 44.1 

−

 59.1 mm (1.736 

−

 2.327 in)

Clearance “L2”

: 30.9 

−

 45.9 mm (1.217 

−

 1.807 in)

Front wiper arm mounting nuts

: 23.6 N·m (2.4 kg-m, 17 ft-lb)

PKIA7843E

PKIA2274E

Wiper motor and linkage mounting bolts

: 4.5 N·m (0.46 kg-m, 40 in-lb)