2005 INFINITI QX4 door lock

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REAR WIPER AND WASHER SYSTEM
Revision: October 20052005 QX56
REAR WIPER OPERATION
When the ignition switch is in the ON or START position, and the rear wiper switch is in the ON position, the
BCM detects a rear wiper ON request through the combination switch (wiper switch) reading function.
The BCM will first check the status of the glass hatch ajar switch before supplying power to the rear wiper
motor. If the glass hatch ajar switch is closed (ground) the BCM will not turn on the rear wiper motor. If the
glass hatch ajar switch is open (not grounded) the BCM will control the rear wiper motor as follows.
The BCM controls rear wiper motor operation by switching direction of current flow between the two rear wiper
motor output circuits.
Power is supplied to output circuit 1 for forward operation (counterclockwise sweep),

through BCM terminal 55

to rear wiper motor terminal 4.
Ground is supplied

to rear wiper motor terminal 6

through BCM terminal 54

through BCM terminal 67

through grounds M57, M61 and M79.
With output circuit 1 power and ground supplied, the rear wiper motor operates in a counterclockwise sweep
direction until auto stop switch 1 closes (full sweep position). Auto stop switch 1 supplies ground

to BCM terminal 44

through rear wiper motor terminal 2

through rear wiper motor terminal 5

through grounds B117 and B132.
When the BCM receives this ground signal it turns off output circuit 1 and turns on output circuit 2.
Power is supplied to output circuit 2 for reverse operation (clockwise sweep),

through BCM terminal 54

to rear wiper motor terminal 6.
Ground is supplied

to rear wiper motor terminal 4

through BCM terminal 55

through BCM terminal 67

through grounds M57, M61 and M79.
With output circuit 2 power and ground supplied the rear wiper motor operates in a clockwise sweep direction
until auto stop switch 2 closes (full sweep position). Auto stop switch 2 supplies ground

to BCM terminal 26

through rear wiper motor terminal 1

through rear wiper motor terminal 3

through grounds B117 and B132.
When the BCM receives this ground signal it turns off output circuit 2 and turns on output circuit 1. This pro-
cess repeats until the rear wiper switch or ignition switch is turned off.
If the ignition switch is turned to OFF during operation, the rear wiper motor will immediately stop. If the igni-
tion switch is turned ON after this condition, and the BCM does not receive a rear wiper switch ON or INT sig-
nal, the BCM will operate the rear wiper to the auto stop position.
If the BCM does not receive a change in status in either auto stop switch 1 or auto stop switch 2 within a 5 sec-
ond period of output circuit 1 or output circuit 2 operation, the BCM will turn off output circuit 1 and output cir-
cuit 2.
If the BCM detects the rear door glass ajar signal during rear wiper motor operation, the BCM will operate the
rear wiper motor to the auto stop position. Once the rear door glass ajar signal returns to open (not grounded)
for 5 or more seconds, the BCM will resume rear wiper motor operation.
INTERMITTENT OPERATION
The rear wiper motor operates the wiper arm at low speed approximately every 7 seconds.
When the wiper switch is in the rear wiper INT position, the BCM detects a rear wiper INT request through the
combination switch (wiper switch) reading function.

REAR WIPER AND WASHER SYSTEM
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Revision: October 20052005 QX56
Removal and Installation of Rear Wiper Motor EKS00BEO
REMOVAL
1. Remove rear wiper arm. Refer to WW-52, "Removal and Instal-
lation of Rear Wiper Arm, Adjustment of Rear Wiper Arm Stop
Location" .
2. Remove pivot cap.
3. Remove back door finisher lower. Refer to EI-42, "
BACK DOOR
TRIM" .
4. Remove the glass hatch latch assembly. Refer to BL-135,
"BACK DOOR LOCK" .
5. Disconnect rear wiper motor connector.
6. Remove rear wiper motor mounting bolts, and remove rear
wiper motor.
INSTALLATION
CAUTION:

Do not drop the wiper motor or cause it to contact other parts.
WKIA5018E
1. Wiper arm cover 2. Wiper arm and blade 3. Pivot cap
4. Rear wiper motor 5. Wiper arm stop
LKIA0416E

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REAR WIPER AND WASHER SYSTEM
Revision: October 20052005 QX56
1. Clean up the pivot area as illustrated. This will reduce possibility
of wiper arm looseness.
2. Install rear wiper motor to the vehicle.
3. Connect rear wiper motor connector.
4. Install glass hatch latch assembly and adjust as necessary.
Refer to BL-135, "
BACK DOOR LOCK" .
5. Install back door finisher lower. Refer to EI-42, "
BACK DOOR
TRIM" .
6. Attach pivot cap.
7. Attach wiper arm. Refer to WW-52, "
Removal and Installation of
Rear Wiper Arm, Adjustment of Rear Wiper Arm Stop Location" .
Rear Washer Nozzle AdjustmentEKS00BEP

This vehicle is equipped with a non-adjustable rear washer nozzle.

If not satisfied with washer fluid spray coverage, confirm that the washer nozzle is installed correctly.

If the washer nozzle is installed correctly, and the washer fluid spray coverage is not satisfactory, replace
the washer nozzle.
Rear Washer Tube LayoutEKS00BEQ
Removal and Installation of Rear Washer NozzleEKS00BER
REMOVAL
1. Remove the rear spoiler. Refer to EI-26, "REAR SPOILER" .
2. Remove rear washer tube from nozzle.
3. Release retaining clips, and remove washer nozzle.
INSTALLATION
Installation is in the reverse order of removal.
SEL024J
WKIA1925E
LKIA0418E