2007 INFINITI M35 relay

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FRONT WIPER AND WASHER SYSTEM
Revision: 2007 April2007 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-98, "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.
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)
PKID0472E

FRONT WIPER AND WASHER SYSTEM
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Revision: 2007 April2007 M35/M45

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 front washer pump terminal 1

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: 2007 April2007 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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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-24, "
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. 0 V
LO Battery voltage
31 L/B High speed ground ON — Approx. 0 V
32 L/Y
Wiper auto stop signal
NOTEONWiper operating Approx. 0 V
Wiper stopped Battery voltage
35 R Front wiper reverse relay signal ON Wiper switchOFF Battery voltage
HI Approx. 0 V
38 B Ground ON — Approx. 0 V
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. 0 V

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FRONT WIPER AND WASHER SYSTEM
Revision: 2007 April2007 M35/M45
Preliminary CheckNKS003WK
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses and fusible link.
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 >> Repair harness or connector.
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, front washer pump and front wiper HI auto
stop signalIgnition switch ON or START 84
Front wiper motor, front wiper low relay, front wiper high relay Battery 73
Front wiper reverse relay Ignition switch ON or START 12
Terminal Ignition switch position
(+)
(-) OFF ON
BCM
connectorTerminal
M1 38
GroundApprox. 0 V Battery voltage
M242 Battery voltage Battery voltage
55 Battery voltage Battery voltage
PKIA7520E
BCM connector Terminal
GroundContinuity
M2 52 Yes
SKIB5125E

FRONT WIPER AND WASHER SYSTEM
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Revision: 2007 April2007 M35/M45
CONSULT-II Functions (IPDM E/R)NKS003WM
CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
DATA MONITOR
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT DIAG MODE ” screen.
2. Touch “ALL SIGNALS”, “MAIN SIGNALS” or “SELECTION FROM MENU” on the “SELECT MONITOR
ITEM” screen.
3. When “SELECTION FROM MENU” is selected, touch individual items to be monitored. In “ALL SIG-
NALS”, all items are monitored. In “MAIN SIGNALS”, predetermined items are monitored.
4. Touch “START”.
5. Touch “RECORD” while monitoring to record the status of the item being monitored. To stop recording,
touch “STOP”.
All Signals, Main Signals, Selection From Menu
NOTE:
Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is at ACC, the dis-
play may not be correct.
ACTIVE TEST
Operation Procedure
1. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Touch “FRONT WIPER” on “SELECT TEST ITEM” screen.
3. Touch item to be tested, and check operation.
4. Touch “OFF” while testing to stop the operation.
Diagnosis Mode Description
SELF−DIAG RESULTS Refer to PG-20, "
SELF-DIAG RESULTS" .
DATA MONITOR The input/output data of IPDM E/R is displayed in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST IPDM E/R sends a drive signal to electronic components to check their operation.
ALL SIGNALS Monitors all items.
MAIN SIGNALS Monitor the predetermined item.
SELECTION FROM MENU Selects items and monitors them.
Item nameCONSULT-II
screen displayDisplay or unitMonitor item selection
Description
ALL
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
FR wiper request FR WIP REQSTOP/1 LOW/
LOW/HI×× ×Signal status input from BCM
Wiper auto stop WIP AUTO STOP ACT P/STOP P×× ×Output status of IPDM E/R
Wiper protection WIP PROT OFF/BLOCK×× ×Control status of IPDM E/R
Te s t i t e mCONSULT-II
screen displayDescription
Front wiper (HI, LO) output FRONT WIPERWith a certain operation (HI, LO), the front wiper relay (HIGH and LOW) can be
operated.

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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 front wiper reverse relay terminals.
2. Check continuity between front wiper reverse relay terminals.
OK or NG
OK >> GO TO 6.
NG >> Replace front wiper reverse relay.
AB
Continuity
Connector Terminal Connector Terminal
E271E333 Yes
SKIB4659E
Front wiper reverse relay terminals Continuity
34Yes
SKIB4660E
Front wiper reverse
relay terminalsCondition Continuity
35Applying battery voltage to between
terminals 1 and 2Ye s
No battery voltage No
SKIB4671E

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FRONT WIPER AND WASHER SYSTEM
Revision: 2007 April2007 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
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SKIB4677E