2007 NISSAN LATIO ignition

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FRONT WIPER AND WASHER SYSTEM
Revision: June 20062007 Versa
FRONT WIPER AND WASHER SYSTEMPFP:28810
Components Parts and Harness Connector LocationEKS00I1G
System DescriptionEKS00I1H

Front wiper relays (front wiper relay, front wiper high relay) are located in the IPDM E/R (intelligent power
distribution module engine room).

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.
OUTLINE
Power is supplied at all times

to ignition relay, located in IPDM E/R, from battery directly,

through 40A fusible link (letter g, located in fuse, fusible link and relay box)

to BCM terminal 70,

through 30A fuse (No. 39, located in IPDM E/R)

to front wiper relay located in IPDM E/R

through 15A fuse (No. 52, located in IPDM E/R), and

through 20A fuse (No. 53, located in IPDM E/R)

to CPU located in IPDM E/R.
When ignition switch is in ON or START position, power is supplied

through ignition relay (located in IPDM E/R)
1. IPDM E/R E45, E46 and E48 2. BCM M18 and M20 (view with glove
box removed)3. Front wiper motor E1 (View with
cowl top cover removed)
4. Front and rear washer motor E2
(View with front fender protector LH
removed)5. Combination switch (wiper switch)
M28
WKIA5467E

FRONT WIPER AND WASHER SYSTEM
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to front wiper relay (located in IPDM E/R), and

to front wiper high relay (located in IPDM E/R) and

to CPU (located in IPDM E/R),

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM terminal 38,

through 15A fuse [No. 4, located in fuse block (J/B)]

to combination switch terminal 14.
Ground is supplied

to IPDM E/R terminals 39 and 59 and

to front wiper motor terminal 2

through grounds E15 and E24,

to BCM terminal 67

to combination switch terminal 12

through grounds M57 and M61.
LOW SPEED WIPER OPERATION
When the front wiper switch is in LO position, the BCM detects the low speed wiper ON signal by means of the
BCM wiper switch reading function.
The BCM sends a front wiper request signal (LO) through the CAN communication line

from BCM terminals 39 and 40

to IPDM E/R terminals 40 and 41.
When the IPDM E/R receives front wiper request signal (LO), it turns ON front wiper relay, located in IPDM E/
R, power is supplied

through IPDM E/R terminal 33 and front wiper high relay and front wiper relay

to front wiper motor terminal 3.
Ground is supplied

to front wiper motor terminal 2

through grounds E15 and E24.
With power and ground is supplied, front wiper motor operates at low speed.
HIGH SPEED WIPER OPERATION
When the front wiper switch is in HI position, the BCM detects a high speed wiper ON signal by means of the
BCM wiper switch reading function.
The BCM sends a front wiper request signal (HI) through the CAN communication line

from BCM terminals 39 and 40

to IPDM E/R terminals 40 and 41.
When the IPDM E/R receives front wiper request signal (HI), it turns ON front wiper relay and front wiper high
relay, located in IPDM E/R, power is supplied

through IPDM E/R terminal 32

to front wiper motor terminal 5.
Ground is supplied

to front wiper motor terminal 2

through grounds E15 and E24.
With power and ground is supplied, front wiper motor operates at high speed.
INTERMITTENT OPERATION
Wiper intermittent operation delay interval is determined from the intermittent wiper dial position inputs. During
each intermittent operation delay interval, the BCM sends a front wiper request signal to the IPDM E/R to
operate the wipers.
When the ignition switch is in the ON or START position, and the front wiper switch is turned to the intermittent
position, the BCM detects a front wiper (intermittent) ON signal by means of the BCM wiper switch reading
function.
BCM then sends front wiper (intermittent) request signal through the CAN communication lines

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FRONT WIPER AND WASHER SYSTEM
Revision: June 20062007 Versa

from BCM terminals 39 and 40

to IPDM E/R terminals 40 and 41.
When BCM determines that combination switch status is front wiper intermittent ON, it performs the following
operations.

BCM detects ON/OFF status of intermittent wiper dial position

BCM calculates operation interval from wiper dial position.

BCM sends a front wiper request signal (INT) to IPDM E/R at calculated operation interval.
When IPDM E/R receives the front wiper request signal (INT), it supplies ground to energize the front wiper
relay. It then sends auto-stop signal to the BCM and conducts intermittent front wiper motor operation.
AUTO STOP OPERATION
With wiper switch turned OFF, wiper motor will continue to operate until wiper arms reach windshield base.
When the wiper arms are not located at base of windshield with wiper switch OFF, ground is supplied

from IPDM E/R terminal 33

to front wiper motor terminal 3, in order to continue wiper motor operation at low speed.
When the wiper arms reach base of windshield, front wiper motor terminals 4 and 2 are connected, and
ground is supplied

to IPDM E/R terminal 38

through front wiper motor terminals 4 and 2

through grounds E15 and E24.
Then the IPDM E/R sends auto stop operation signal to BCM with CAN communication line.
When the BCM receives auto-stop operation signal, BCM sends wiper stop signal to IPDM E/R with CAN com-
munication line.
IPDM E/R stops wiper motor. Wiper motor will then stop wiper arms at the STOP position.
WASHER OPERATION
When the wiper switch is in front wiper washer position, BCM detect front wiper washer signal by BCM wiper
switch reading function. Refer to BCS-3, "
COMBINATION SWITCH READING FUNCTION" .
Combination switch power is supplied

through combination switch terminal 14

to washer motor terminal 1.
Ground is supplied

to front washer motor terminal 2

through combination switch terminal 11

through combination switch terminal 12

through grounds M57 and M61.
With ground is supplied, front washer motor is operated.
When the BCM detects that front washer motor has operated for 0.4 seconds or longer, BCM operates front
wiper motor for low speed.
When the 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 switch is held in mist position, low speed operation continues.
FAIL -S AFE F UN CTI ON
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 LO until ignition switch is turned OFF.)
COMBINATION SWITCH READING FUNCTION
Refer to LT- 6 8 , "Combination Switch Reading Function" .

FRONT WIPER AND WASHER SYSTEM
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4. When “SELECTION FROM MENU” is selected, touch items to be monitored. When “ALL SIGNALS” is
selected, all the items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the monitored item can be recorded. To stop
recording, touch “STOP”.
Display Item List
NOTE: This item is displayed, but cannot be monitored.
ACTIVE TEST
Operation Procedure
1. Touch “WIPER” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch item to be tested and check operation of the selected item.
4. During the operation check, touching “BACK” deactivates the operation.
Display Item List
Monitor item Contents
IGN ON SW “ON/OFF”Displays “ignition switch ON (ON)/Other OFF or ACC (OFF)” status as judged from ignition
switch signal.
IGN SW CAN “ON/OFF”Displays “ignition switch ON (ON)/Other OFF or ACC (OFF)” status as judged from CAN com-
munication signal.
FR WIPER HI “ON/OFF” Displays “FRONT WIPER HI (ON)/Other (OFF)” status as judged from wiper switch signal.
FR WIPER LOW “ON/OFF” Displays “FRONT WIPER LOW (ON)/Other (OFF)” status as judged from wiper switch signal.
FR WIPER INT “ON/OFF” Displays “FRONT WIPER INT (ON)/Other (OFF)” status as judged from wiper switch signal.
FR WASHER SW “ON/OFF”Displays “FRONT WASHER Switch (ON)/Other (OFF)” status as judged from wiper switch sig-
nal.
INT VOLUME “1 - 7” Displays intermittent operation dial position setting (1 - 7) as judged from wiper switch signal.
FR WIPER STOP “ON/OFF” Displays “Stopped (ON)/Operating (OFF)” status as judged from auto-stop signal.
VEHICLE SPEED “km/h” Displays vehicle speed status as judged from vehicle speed signal.
RR WIPER ON “OFF” Displays “REAR WIPER (ON)/Other (OFF)” status as judged from wiper switch signal.
RR WIPER INT “OFF” Displays "REAR WIPER INT (ON)/Other (OFF)” status as judged from wiper switch signal.
RR WASHER SW “OFF”Displays "REAR WASHER SWITCH (ON)/Other (OFF)” status as judged from wiper switch sig-
nal.
RR WIPER STOP “OFF” Displays “STOPPED (OFF)/Operating (ON)” status as judged from auto-stop switch 1.
RR WIPER STP2 “OFF” Displays “STOPPED (OFF)/Operating (ON)” status as judged from auto-stop switch 2.
H/L WASH SW
NOTE“OFF” —
Test item Display on CONSULT-II screen Description
Front wiper LO output FR WIPER (LO) Front LO wiper can be operated by any ON-OFF operation.
Front wiper HI output FR WIPER (HI) Front HI wiper can be operated by any ON-OFF operation.
Front wiper INT output FR WIPER (INT) Front INT wiper can be operated by any ON-OFF operation.
Rear wiper output RR WIPER Rear wiper can be operated by any ON-OFF operation.

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FRONT WIPER AND WASHER SYSTEM
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CONSULT-II Function (IPDM E/R)EKS00I1S
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
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 “SELECT MONITOR ITEM”
screen.
3. Touch the required monitoring item on “SELECTION FROM MENU”. In “ALL SIGNALS”, 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 ignition switch ON. When ignition switch is at ACC, the display may
not be correct.
ACTIVE TEST
Operation Procedure
1. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Touch item to be tested, and check operation.
3. Touch “START”.
4. Touch “STOP” while testing to stop the operation.
IPDM E/R diagnostic Mode Description
SELF-DIAG RESULTS Displays IPDM E/R self-diagnosis results.
DATA MONITOR Displays IPDM E/R input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
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/1LOW/
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
Test item CONSULT-II screen display Description
Front wiper (HI, LO) output FRONT WIPERWith a certain operation (OFF, HI ON, LO ON), front wiper relay (Lo, Hi)
can be operated.

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FRONT WIPER AND WASHER SYSTEM
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4. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front wiper motor connector E1.
3. Check continuity between front wiper motor connector E1 termi-
nal 2 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK FRONT WIPER CIRCUIT
1. Disconnect IPDM E/R connector E45.
2. Check continuity between IPDM E/R connector E45 (A) termi-
nals 32 and 33, and front wiper motor connector E1 (B) termi-
nals 3 and 5.
3. Check continuity between IPDM E/R connector E45 (A) termi-
nals 32 and 33 and Ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
Front wiper
motor connectorTe r m i n a l
GroundContinuity
E1 2 Yes
WKIA5488E
AB
Continuity
Connector Terminal Connector Terminal
E4532
E13
Ye s
33 5
A
GroundContinuity
Connector Terminal
E4532
No
33
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6. CHECK IPDM E/R
With CONSULT-ll
1. Connect IPDM E/R connector E45.
2. Turn ignition switch ON.
3. Select “IPDM E/R” by CONSULT-II, and 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 connector E45 terminals 32
and 33 and ground while front wiper (HI, LO) is operating.
Without CONSULT-ll
1. Connect IPDM E/R connector E45.
2. Turn ignition switch ON.
3. Start auto active test. Refer to PG-21, "
Auto Active Test" .
4. Check voltage between IPDM E/R connector E45 terminals 32 and 33 and ground while front wiper (HI,
LO) is operating.
OK or NG
OK >> Replace front wiper motor. Refer to WW-25, "Removal and Installation of Front Wiper Drive
Assembly" .
NG >> Replace IPDM E/R. Refer to PG-29, "
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)
EKS00I1U
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 PROT” item
shows “BLOCK”.
Te r m i n a l
ConditionVo ltag e
(Approx.) (+)
(-)
IPDM E/R
connectorTe r m i n a l
E4532
GroundStopped 0V
LO operation Battery voltage
33Stopped 0V
HI operation Battery voltage
Te r m i n a l
ConditionVoltage
(Approx.) (+)
(-)
IPDM E/R
connectorTe r m i n a l
E4532
GroundStopped 0V
LO operation Battery voltage
33Stopped 0V
HI operation Battery voltage
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1. CHECK FRONT WIPER STOP SIGNAL
With CONSULT-ll
Select “IPDM E/R” on CONSULT-II. With “DATA MONITOR”, make
sure that “WIP AUTO STOP” turns “ACT P” - “STOP P” linked with
wiper operation.
Without CONSULT-ll
GO TO 2.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-29, "Removal and
Installation of IPDM E/R" .
NG >> GO TO 2.
2. CHECK IPDM E/R
1. Turn ignition switch ON.
2. Check voltage between IPDM E/R connector E46 terminal 38
and ground while front wiper motor is stopped and while it is
operating.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-29, "Removal and Installation of IPDM E/R" .
NG >> GO TO 3.
3. CHECK FRONT WIPER AUTO STOP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector E46 and wiper motor connector E1.
3. Check continuity between IPDM E/R connector (A) E46 terminal
38 and front wiper motor connector (B) E1 terminal 4.
4. Check continuity between IPDM E/R harness connector (A) and
Ground.
OK or NG
OK >> Replace front wiper motor. Refer to WW-25, "Removal and Installation of Front Wiper Drive
Assembly" .
NG >> Repair harness or connector.
PKIA7614E
Te r m i n a l
ConditionVo ltag e
(Approx.) (+)
(-)
IPDM E/R
connectorTerminal
E46 38 GroundWiper stopped 0V
Wiper operating Battery voltage
WKIA5491E
AB
Continuity
Connector Terminal Connector Terminal
E46 38 E1 4 Yes
A
GroundContinuity
Connector Terminal
E46 38 No
WKIA5492E