2008 INFINITI FX35 service

FRONT WIPER AND WASHER SYSTEMWW-5
< SERVICE INFORMATION >
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 to BCM terminals 49 and 52
 through grounds M35, M45 and M85,
 to IPDM E/R terminals 38 and 60
 through grounds E21, E50 and E51,
 to combination switch terminal 12
 through grounds M35, M45 and M85.
LOW SPEED WIPER OPERATION
When wiper switch is in LOW position, BCM detects low speed wiper ON signal by BCM wiper switch reading
function.
BCM sends front wiper request signal (LO) through CAN communication
 from BCM terminals 39 and 40
 to IPDM E/R terminals 48 and 49.
When IPDM E/R receives front wiper request signal (LO), it turns ON front wiper relay located in IPDM E/R,
power is supplied
 through front wiper relay
 through front wiper high relay
 through IPDM E/R terminal 21
 to front wiper motor terminal 1.
Ground is supplied
 to front wiper motor terminal 2
 through grounds E21, E50 and E51.
With power and ground supplied, the front wiper motor operates at low speed.
HIGH SPEED WIPER OPERATION
When wiper switch is in HI position, BCM detects high speed wiper ON signal by BCM wiper switch reading
function.
BCM sends front wiper request signal (HI) through CAN communication
 from BCM terminals 39 and 40
 to IPDM E/R terminals 48 and 49.
When IPDM E/R receives front wiper r equest signal (HI), it turns ON front wiper relay (located in IPDM E/R),
power is supplied
 through front wiper relay
 through front wiper high relay
 through IPDM E/R terminal 31
 to front wiper motor terminal 4.
Ground is supplied
 to front wiper motor terminal 2
 through grounds E21, E50 and E51.
With power and ground supplied, the front wiper motor operates at high speed.
INTERMITTENT OPERATION
Front wiper intermittent operation delay interval is det ermined from a combination of 3 switches (intermittent
operation dial position 1, 2, and 3) and vehicle speed signal.
Speed dependent wiper controlled mode can be changed by the function setting of CONSULT-III or display.
During each intermittent operation delay interval, BCM sends front wiper request signal to IPDM E/R.
Wiper Dial Position Setting
Example: For wiper intermittent dial position 1
Wiper intermittent dial position Intermittent operation
interval Combination switch
INT VOLUME 1 INT VOLUME 2 INT VOLUME 3
1Short
↑
↓
Long ON ON ON
2ONONOFF
3ONOFFOFF
4 OFF OFF OFF
5OFFOFFON
6OFFONON
7 OFF ON OFF
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< SERVICE INFORMATION >
FRONT WIPER AND WASHER SYSTEM
Using combination switch reading function, BCM detects ON/OFF status of INT VOLUME 1, 2, and 3.
When combination switch status is as listed below, BCM det ermines that it is wiper intermittent dial position 1.
 INT VOLUME 1: ON (Continuity exists bet ween combination switch output 3 and input 1.)
 INT VOLUME 2: ON (Continuity exists bet ween combination switch output 5 and input 1.)
 INT VOLUME 3: ON (Continuity exists bet ween combination switch output 4 and input 2.)
BCM determines front wiper intermittent operation delay in terval from wiper intermittent dial position 1 and
vehicle speed, and sends wiper request signal (INT) to IPDM E/R.
AUTO STOP OPERATION
With wiper switch turned OFF, wiper motor will conti nue to operate until wiper arms reach windshield base.
When wiper arms are not located at base of winds hield with wiper switch OFF, ground is provided
 from IPDM E/R terminal 21
 to front wiper motor terminal 1, in order to continue wiper motor operation at low speed.
When wiper arms reach base of windshield, fr ont wiper motor terminals 5 and 2 are connected,
and Ground is supplied
 to IPDM E/R terminal 32
 through front wiper motor terminals 5 and 2
 through grounds E21, E50 and E51.
Then the IPDM E/R sends auto stop operati on signal to BCM through CAN communication.
When the BCM receives auto-stop operation signal, BCM sends wiper stop signal to IPDM E/R through CAN
communication.
IPDM E/R stops wiper motor. Wiper motor will then stop wiper arms at the STOP position.
WASHER OPERATION
When wiper switch is in front wiper washer position wit h ignition switch on, BCM detects front wiper switch is
on the washer position by BCM wiper switch reading function (Refer to "COMBINATION SWITCH READING
FUNCTION"), combination switch (wiper switch) ground is supplied
 to combination switch terminal 13
 through front and rear washer pump terminal 1
 to front and rear washer pump terminal 2
 through combination switch terminal 11
 to combination switch terminal 12
 through grounds M35, M45 and M85.
With ground supplied, front and rear washer pump is operated.
When BCM detects that front and rear washer pump has operated for 0.4 seconds or linger, BCM operates
front wiper motor for low speed.
When BCM detects washer switch is OFF, low s peed operation cycles approximately 2 times and stops.
MIST OPERATION
When wiper switch is turned to MIST position, wiper low speed operation cycles once and then stops.
For additional information about wiper operation under this condition, Refer to "LOW SPEED WIPER OPERA-
TION".
If switch is held in MIST position, low speed operation continues.
FAIL-SAFE FUNCTION
If an abnormality occurs in CAN communications, IPDM E/ R holds the condition just before fail-safe status is
initiated until ignition switch is turned OFF. (If wipers we re operating in LO just before the initiation of fail-safe
status, they continue to operate in LO until ignition switch is turned OFF.)
COMBINATION SWITCH READING FUNCTION
Refer to BCS-4, "System Description".
CAN Communication System DescriptionINFOID:0000000001328544
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-board multi-
plex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
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FRONT WIPER AND WASHER SYSTEMWW-7
< SERVICE INFORMATION >
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CAN Communication UnitINFOID:0000000001328545
Refer to LAN-43, "CAN System Specification Chart".
SchematicINFOID:0000000001328546
TKWM4373E
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FRONT WIPER AND WASHER SYSTEM
Wiring Diagram - WIPER -
INFOID:0000000001328547
TKWM0663E
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FRONT WIPER AND WASHER SYSTEMWW-9
< SERVICE INFORMATION >
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TKWM4374E
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< SERVICE INFORMATION >
FRONT WIPER AND WASHER SYSTEM
Terminal and Reference Value for BCM
INFOID:0000000001328548
CAUTION:
 Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and wiper switch OFF not to be fluctuated by overloaded.
 Turn wiper intermittent dial posi tion to 4 except when checking wavef orm or voltage of wiper inter-
mittent dial position. Wiper intermittent dial position can be confirmed on CONSULT-III. Refer to WW-
15, "CONSULT-III Functions (BCM)".
TKWM4375E
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FRONT WIPER AND WASHER SYSTEMWW-11
< SERVICE INFORMATION >
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Te r m i -
nal No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
4PU/W Combination
switch input 3
ONLighting, turn,
wiper switch
(Wiper inter-
mittent dial
position 4) OFF Approx. 0 V
Any of the conditions below
 Front wiper switch MIST
 Front wiper switch INT
 Front wiper switch LO
Approx. 1.0 V
5Y/R Combination
switch input 2 ON
Lighting, turn,
wiper switch OFF
(Wiper intermittent dial position 4)
Approx. 0 V
Any of the conditions below
 Front washer switch (Wiper intermittent dial position 4)
 Wiper intermittent dial position 1
 Wiper intermittent dial position 5
 Wiper intermittent dial position 6
Approx. 1.0 V
6SB Combination
switch input 1 ON
Lighting, turn,
wiper switch OFF
(Wiper intermittent dial position 4)
Approx. 0 V
Any of the conditions below
 Front wiper switch HI (Wiper intermittent dial position 4)
 Wiper intermittent dial position 3
Approx. 1.0 V
Any of the conditions below
 Wiper intermittent dial position 1
 Wiper intermittent dial position 2 Approx. 1.7 V
Any of the conditions below
 Wiper intermittent dial position 6
 Wiper intermittent dial position 7 Approx. 0.8 V
PKIB4959J
PKIB4959J
PKIB4959J
PKIB4952J
PKIB4955J
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FRONT WIPER AND WASHER SYSTEM
32 GY/RCombination
switch output 5 ON
Lighting, turn,
wiper switch OFF
(Wiper intermittent dial position 4)
Approx. 7.2 V
Any of the conditions below
 Wiper intermittent dial position 1
 Wiper intermittent dial position 2
 Wiper intermittent dial position 6
 Wiper intermittent dial position 7 Approx. 1.0 V
33 G Combination
switch output 4
ONLighting, turn,
wiper switch OFF
(Wiper intermittent dial position 4)
Approx. 7.2 V
Any of the conditions below
 Wiper intermittent dial position 1
 Wiper intermittent dial position 5
 Wiper intermittent dial position 6 Approx. 1.2 V
34 W/B Combination
switch output 3 ONLighting, turn,
wiper switch OFF
(Wiper intermittent dial position 4)
Approx. 7.2 V
Any of the conditions below
 Wiper intermittent dial position 1
 Wiper intermittent dial position 2
 Wiper intermittent dial position 3 Approx. 1.2 V
Te r m i -
nal No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
PKIB4960J
PKIB4956J
PKIB4960J
PKIB4958J
PKIB4960J
PKIB4958J
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