Motor INFINITI M35 2006 Factory Service Manual

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FRONT WIPER AND WASHER SYSTEM
Revision: 2006 January2006 M35/M45
FRONT WIPER AND WASHER SYSTEMPFP:28810
Components Parts and Harness Connector LocationNKS003WB
System DescriptionNKS003WC
Front wiper relays (HIGH, LOW) are included in IPDM E/R (intelligent power distribution module engine
room).
Front wiper reverse relay is included in relay box-1. Refer to PG-96, "ELECTRICAL UNITS LOCATION" .
Wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input termi-
nals. Terminal combination status is read by BCM (body control module) when switch is turned ON.
BCM controls front wiper LO, HI, and INT (intermittent) operation.
IPDM E/R operates wiper motor according to CAN communication signals from BCM.
Front wiper motor switches LOW speed to/from HIGH speed by BCM function to change polarity.
PKIC0616E

FRONT WIPER AND WASHER SYSTEM
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OUTLINE
Power is supplied at all times
to ignition relay, located in IPDM E/R, from battery directly,
through 50 A fusible link (letter F, located in fuse and fusible link block)
to BCM terminal 55,
through 10 A fuse [No. 21, located in fuse block (J/B)]
to BCM terminal 42,
through 30 A fuse (No. 73, located in IPDM E/R)
to front wiper low relay, located in IPDM E/R
to front wiper reverse relay terminal 5,
through 15 A fuse (No. 78, located in IPDM E/R)
to CPU (central processing unit) located in IPDM E/R,
through 15 A fuse (No. 71, located in IPDM E/R)
to CPU located in IPDM E/R.
With the ignition switch in the ON or START position, power is supplied
to ignition relay, located in IPDM E/R,
through 15 A fuse [No. 1, located in fuse block (J/B)]
to BCM terminal 38,
through 10 A fuse [No. 12, located in fuse block (J/B)]
to front wiper reverse relay terminal 1,
through 10 A fuse (No. 84, located in IPDM E/R)
to combination switch terminal 11
to front wiper motor terminal 4.
Ground is supplied
to BCM terminal 52
through grounds M16 and M70,
to IPDM E/R terminals 38 and 51
through grounds E22 and E43,
to combination switch terminal 12
through grounds M16 and M70.
LOW SPEED WIPER OPERATION
When wiper switch is in the LO position, BCM detects low speed wiper ON signal by BCM wiper switch read-
ing function.
BCM sends front wiper request signal (LO) with CAN communication line
from BCM terminals 39 and 40
to IPDM E/R terminals 49 and 50.
When IPDM E/R receives front wiper request signal (LO), it turns ON front wiper low relay, located in IPDM
E/R, power is supplied
through IPDM E/R terminal 23 and front wiper high relay and front wiper low relay
to front wiper motor terminal 3.
Ground is supplied
to front wiper motor terminal 1
through front wiper reverse relay terminals 3 and 4
through grounds E22 and E43.
With power and ground supplied, the front wiper motor operates at low speed.

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FRONT WIPER AND WASHER SYSTEM
Revision: 2006 January2006 M35/M45
HIGH SPEED WIPER OPERATION
When wiper switch is in the HI position, BCM detects high speed wiper ON signal by BCM wiper switch read-
ing function.
BCM sends front wiper request signal (HI) with CAN communication line
from BCM terminals 39 and 40
to IPDM E/R terminals 49 and 50.
When IPDM E/R receives front wiper request signal (HI), it turns ON front wiper high relay (located in IPDM
E/R) and front wiper reverse relay (located in relay box-1), power is supplied
through IPDM E/R terminal 19
through front wiper reverse relay terminals 5 and 3
to front wiper motor terminal 1.
Ground is supplied
to front wiper motor terminal 2
to IPDM E/R terminal 31 and front wiper high relay and front wiper low relay
to IPDM E/R terminal 38
through grounds E22 and E43.
With power and ground supplied, the front wiper motor operates at high speed.
INTERMITTENT OPERATION
1. BCM detects ON/OFF status of intermittent operation dial position 1, 2 and 3 switched by wiper dial posi-
tion to judge wiper dial position status.
2. BCM calculates intermittent operation interval time (second) from the vehicle speed signal received by
combination meter through CAN communication line and the wiper dial position.
Unit: second
NOTE:
The value in the table can differ from the actual vehicle speed.
3. BCM switches front wiper request signal transmitted to IPDM E/R through CAN communication line from
STOP to LO once at intervals of intermittent operation time.
4. IPDM E/R receives front wiper request signal (LO) once to turn ON front wiper main relay located in IPDM
E/R. Then operates front wiper. IPDM E/R receives front wiper auto stop signal (stop) input from front
wiper motor to turn OFF front wiper motor relay. IPDM E/R switches front wiper auto stop signal transmit-
ted through CAN communication line from MOVE to STOP.
5. BCM receives front wiper auto stop signal (stop) to operate timer that determines intermittent operation
interval time till next front wiper motor operation.
Wiper dial positionIntermittent operation
interval timeStoppedVehicle speed; approx.
5 km/h (3.1 MPH) or
more to approx. 65 km/h
(40.4 MPH)Vehicle speed approx.
65 km/h (40.4 MPH)
or more
1 Short
Long10.40.2
2 2.510.6
3521.2
4 7.531.8
5 12.5 5 3
625106
740169.6

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AUTO STOP OPERATION
With wiper switch turned OFF, wiper motor will continue to operate until wiper arms reach windshield base.
When wiper arms are not located at base of windshield with wiper switch OFF, ground is provided
from IPDM E/R terminal 23
to front wiper motor terminal 3, in order to continue wiper motor operation at low speed.
When wiper arms reach base of windshield, front wiper motor terminals 4 and 5 are connected
to IPDM E/R terminal 32
through front wiper motor terminals 4 and 5.
Then the IPDM E/R sends auto stop operation signal to BCM with CAN communication line.
When BCM receives auto stop operation signal, BCM sends wiper stop signal to IPDM E/R with CAN commu-
nication line.
IPDM E/R stops wiper motor. Wiper motor will then stop wiper arms at the STOP position.
WAS H ER O P E R ATI O N
When wiper switch is in front wiper washer position with ignition switch ON, BCM detects front wiper washer
signal by BCM wiper switch reading function (refer to BCS-3, "
COMBINATION SWITCH READING FUNC-
TION" ). Combination switch ground is supplied
to front washer motor terminal 2
through combination switch terminal 14
to combination switch terminal 12
through grounds M16 and M70.
And power is supplied
through combination switch terminal 13
to front washer motor terminal 1.
With power and ground supplied, front washer motor is operated.
When BCM detects that front washer motor has operated for 0.4 seconds or longer, BCM operates front wiper
motor for low speed.
When BCM detects washer switch is OFF, low speed operation cycles approximately 2 times and stops.
MIST OPERATION
When the wiper switch is turned to the MIST position, wiper low speed operation cycles once and then stops.
For additional information about wiper operation under this condition, refer to WW-5, "
LOW SPEED WIPER
OPERATION" .
If the switch is held in the 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 were operating in LO just before the initiation of fail-safe
status, they continue to operate in LOW until ignition switch is turned OFF.)

FRONT WIPER AND WASHER SYSTEM
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Terminals and Reference Values for IPDM E/RNKS003WI
NOTE:
During LO operation, terminal No. 32 detects front wiper motor stopping or moving by front wiper auto stop signal.
During HI operation, terminal No. 32 detects front wiper motor stopping or moving by front wiper auto stop signal that is output from
terminal No. 44 (not from terminal No. 32).
How to Perform Trouble DiagnosesNKS003WJ
1. Confirm the symptoms and customer complaint.
2. Understand operation description and function description. Refer to WW-4, "
System Description" .
3. Perform the Preliminary Check. Refer to WW-22, "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the front wiper and washer operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
19 O High speed signal ON — Battery voltage
23 V Low speed signal ON Wiper switchOFF Approx. 0V
LO Battery voltage
31 L/B High speed ground ON — Approx. 0V
32 L/Y
Wiper auto stop signal
NOTEONWiper operating Approx. 0V
Wiper stopped Battery voltage
35 R Front wiper reverse relay signal ON Wiper switchOFF Battery voltage
HI Approx. 0V
38 B Ground ON — Approx. 0V
44 G/LFront washer motor and front wiper
auto stop signal (HI) power supplyON — Battery voltage
49 L CAN
H — — —
50 P CAN
L — — —
51 B Ground ON — Approx. 0V

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FRONT WIPER AND WASHER SYSTEM
Revision: 2006 January2006 M35/M45
Preliminary CheckNKS003WK
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSE
Check for blown fuses.
Refer to WW-13, "
Wiring Diagram — WIPER —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open or short between fuse, fusible link and BCM.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Unit Power source Fuse and fusible link No.
BCMBatteryF
21
Ignition switch ON or START 1
Front washer motor and front wiper HI auto stop signal Ignition switch ON or START 84
Front wiper motor, front wiper low relay, front wiper high relayBattery 73
Front wiper reverse relay Ignition switch ON or START 12
Terminal Ignition switch position
(+)
(-) OFF ON
BCM
connectorTerminal
M1 38
GroundApprox. 0V Battery voltage
M242 Battery voltage Battery voltage
55 Battery voltage Battery voltage
PKIA7520E
BCM connector Terminal
GroundContinuity
M2 52 Yes
SKIB5125E

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Display Item List
ACTIVE TEST
Operation Procedure
1. Touch “WIPER” on the “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch “FR WIPER” on “SELECT TEST ITEM” screen.
4. Touch items to be tested, and check operation.
5. During operation check, touching “OFF” deactivates operation.
Display Item List
NOTE:
With INTERMITTENT operation, the front wiper moves only once.Monitor item Contents
IGN ON SW “ON/OFF”Displays status (ignition switch IGN position: ON/other: OFF) of ignition switch judged from the
ignition switch signal.
IGN SW CAN “ON/OFF”Displays status (ignition switch IGN position: ON/other: OFF) of ignition switch judged from the
ignition switch signal (CAN communication lines).
FR WIPER HI “ON/OFF”Displays status (front wiper switch high position: ON/other: OFF) of front wiper high switch
judged from the wiper switch signal.
FR WIPER LOW “ON/OFF”Displays status (front wiper switch low position: ON/other: OFF) of front wiper low switch
judged from the wiper switch signal.
FR WIPER INT “ON/OFF”Displays status (front wiper switch intermittent position: ON/other: OFF) of front wiper intermit-
tent switch judged from the wiper switch signal.
FR WASHER SW “ON/OFF”Displays status (front washer switch ON position: ON/other: OFF) of front washer switch judged
from the wiper switch signal.
INT VOLUME “1 - 7”Displays status (wiper intermittent dial position setting 1- 7) of intermittent volume switch
judged from the wiper switch signal.
FR WIPER STOP “ON/OFF”Displays status (front wiper stop position: ON/move: OFF) of front wiper motor stop judged
from the front wiper auto stop signal.
VEHICLE SPEED “km/h” Displays status vehicle speed as judged from vehicle speed signal.
Test item Indication on CONSULT-II display Description
Front wiper output FR WIPERWith a certain operation (HI, LO, INT), the front wiper can be oper-
ated.
NOTE

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4. CHECK CIRCUIT BETWEEN FRONT WIPER MOTOR AND FRONT WIPER REVERSE RELAY
1. Turn ignition switch OFF.
2. Disconnect front wiper motor connector.
3. Remove front wiper reverse relay.
4. Check continuity between front wiper motor harness connector
(A) and front wiper reverse relay harness connector (B).
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK FRONT WIPER REVERSE RELAY
1. Check continuity between terminal 3 and 4.
2. Apply battery voltage to between terminals 1 and 2.
3. Check continuity between terminals 3 and 5.
OK or NG
OK >> GO TO 6.
NG >> Replace front wiper reverse relay.
AB
Continuity
Connector Terminal Connector Terminal
E271E333 Yes
SKIB4659E
3 4 : Continuity should exist.
SKIB4660E
3 5 : Continuity should exist.
SKIB4671E

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Revision: 2006 January2006 M35/M45
6. CHECK FRONT WIPER CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R harness connector (A) and
front wiper motor harness connector (B).
3. Check continuity between IPDM E/R harness connector (A) and
front wiper reverse relay harness connector (B).
4. Check continuity between IPDM E/R harness connector and
ground.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
AB
Continuity
Connector Terminal Connector Terminal
E723
E273
Ye s
31 2
SKIB4662E
AB
Continuity
Connector Terminal Connector Terminal
E7 19 E33 5 Yes
SKIB4676E
IPDM E/R
connectorTe r m i n a l
GroundContinuity
E719
No
23
SKIB4677E

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7. 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 “LO” or “HI” screen.
6. Check voltage between IPDM E/R harness connector and
ground while front wiper (HI, LO) 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-24, "
Auto Active Test" .
4. Check voltage between IPDM E/R harness connector and ground while front wiper (HI, LO) is operating.
OK or NG
OK >> Replace front wiper motor. Refer to WW-43, "Disassembly and Assembly of Front Wiper Drive
Assembly" .
NG >> Replace IPDM E/R. Refer to PG-31, "
Removal and Installation of IPDM E/R" .
Front Wiper Does Not Return to Stop Position (After Front Wiper Operate for 10
Seconds, They Stop for 20 Seconds, and After Repeating the Operations Five
Times, They Become Inoperative)
NKS003WO
CAUTION:
When auto stop signal has not varied for 10 seconds or longer while IPDM E/R is operating front
wipers, IPDM E/R considers that front wipers are locked, and stops wiper output. That causes this
symptom.
This status can be checked by “DATA MONITOR” of “IPDM E/R” on which “WIPER PROTECTION”
item shows “BLOCK”.
Terminal
Condition Voltage (+)
(-)
IPDM E/R
connectorTerminal
E719
GroundStopped
Battery voltage
HI operation
23Stopped Approx. 0V
LO operation Battery voltage
Terminal
Condition Voltage (+)
(-)
IPDM E/R
connectorTerminal
E719
GroundStopped
Battery voltage
HI operation
23Stopped Approx. 0V
LO operation Battery voltage
SKIB4663E