2006 INFINITI QX56 Factory Service Manual

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Page 3353 of 3383

INFINITI QX56 2006 Factory Service Manual WW-26
FRONT WIPER AND WASHER SYSTEM
Revision: November 20092006 QX56
FRONT WIPER INTERMITTENT OPERATION SWITCH POSITION CANNOT BE ADJUSTED
1. COMBINATION SWITCH TO BCM INSPECTION
Select "BCM" on CONSU

Page 3354 of 3383

INFINITI QX56 2006 Factory Service Manual FRONT WIPER AND WASHER SYSTEMWW-27
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Revision: November 2009 2006 QX56
2. IPDM E/R TO FRONT WIPER MOTOR AUTO STOP CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect

Page 3355 of 3383

INFINITI QX56 2006 Factory Service Manual WW-28
FRONT WIPER AND WASHER SYSTEM
Revision: November 20092006 QX56
Front Wiper Arms EKS00GBH
REMOVAL AND INSTALLATION
Removal
1. Remove wiper arm covers and wiper arm nuts.
2. Remove front RH wiper

Page 3356 of 3383

INFINITI QX56 2006 Factory Service Manual FRONT WIPER AND WASHER SYSTEMWW-29
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Revision: November 2009 2006 QX56
Wiper Motor and Linkage EKS00BE5
REMOVAL AND INSTALLATION
REMOVAL
1. Remove the cowl top. Refer to EI-18,

Page 3357 of 3383

INFINITI QX56 2006 Factory Service Manual WW-30
FRONT WIPER AND WASHER SYSTEM
Revision: November 20092006 QX56
Washer Tube Layout EKS00BE7
Wiper and Washer Switch EKS00BE8
REMOVAL AND INSTALLATION
Removal
1. Remove steering column covers.
2.

Page 3358 of 3383

INFINITI QX56 2006 Factory Service Manual FRONT WIPER AND WASHER SYSTEMWW-31
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Revision: November 2009 2006 QX56
3. Remove washer fluid level sensor connector.
4. Disconnect front and rear washer hoses.
5. Remove front

Page 3359 of 3383

INFINITI QX56 2006 Factory Service Manual WW-32
REAR WIPER AND WASHER SYSTEM
Revision: November 20092006 QX56
REAR WIPER AND WASHER SYSTEMPFP:28710
Components Parts and Harness Connector LocationEKS00BEB
System DescriptionEKS00BEC
The wiper

Page 3360 of 3383

INFINITI QX56 2006 Factory Service Manual REAR WIPER AND WASHER SYSTEMWW-33
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Revision: November 2009 2006 QX56
REAR WIPER OPERATION
When the ignition switch is in the ON or START position, and the rear wiper switch is

REAR WIPER AND WASHER SYSTEMWW-33
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Revision: November 2009 2006 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.

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