Nissan Murano Z50 (2004 year). Manual — part 223
FRONT WIPER AND WASHER SYSTEM
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to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].
When the ignition switch ON or START position, power is supplied
●
through 10 A fuse [No. 1 located in fuse block (J/B)]
●
to BCM (body control module) terminal 38
●
through 10 A fuse [No. 84 located in IPDM E/R (intelligent power distribution module engine room)]
●
through IPDM E/R (intelligent power distribution module engine room) terminal 44
●
to combination switch terminal 14.
Ground is supplied
●
to BCM (body control module) terminals 49 and 52
●
through grounds M14 and M78
●
to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60
●
through grounds E13, E26 and E28
●
to combination switch (wiper switch) terminal 12
●
through grounds M14 and M78.
LOW SPEED WIPER OPERATION
When front wiper switch is in LO position, BCM detects the LO position of the wiper switch by BCM wiper
switch reading function.
BCM sent front wiper request signal (LO) to IPDM E/R by CAN communication line
●
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
●
to front wiper motor terminal 3
●
through IPDM E/R terminal 21 and front wiper relay and front wiper HI relay.
Ground is supplied
●
to front wiper motor terminal 1
●
through grounds E13, E26 and E28.
with power and ground is supplied, the front wiper motor operates at low speed.
HI SPEED WIPER OPERATION
When front wiper switch is in HI position, BCM detects the HI position of the wiper switch by BCM wiper switch
reading function.
BCM sent front wiper request signal (HI) to IPDM E/R by CAN communication line
●
from BCM terminals 39 and 40
●
to IPDM E/R terminals 48 and 49.
When IPDM E/R receives front wiper request signal (HI), it turns ON front wiper relay and front wiper HI relay
(located in IPDM E/R), power is supplied
●
to front wiper motor terminal 2
●
through IPDM E/R terminal 31 and front wiper relay and front wiper HI relay.
Ground is supplied
●
to front wiper motor terminal 1
●
through grounds E13, E26 and E28.
with power and ground is supplied, the front wiper motor operates at high speed.
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FRONT WIPER AND WASHER SYSTEM
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INTERMITTENT OPERATION
Wiper intermittent operation delay interval is determined from a combination of 3 switches (intermittent opera-
tion dial position 1, intermittent operation dial position 2, and intermittent operation dial position 3) and vehicle
speed signal.
During each intermittent operation delay interval, BCM sends front wiper request signal to IPDM E/R.
Wiper Dial Position Setting
Example: For wiper dial position 1...
Using combination switch reading function, BCM detects ON/OFF status of intermittent operation dial posi-
tions 1, 2, and 3.
When combination switch status is as listed below, BCM determines that it is wiper dial position 1.
●
Intermittent operation dial position 1: ON (Combination switch output 3 and input 1 are performing.)
●
Intermittent operation dial position 2: ON (Combination switch output 5 and input 1 are performing.)
●
Intermittent operation dial position 3: ON (Combination switch output 4 and output 2 are performing.)
BCM determines front wiper intermittent operation delay interval from wiper dial position 1 and vehicle speed,
and sends wiper request signal (INT) to IPDM E/R.
Then 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.
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, power is provided
●
from IPDM E/R terminal 21
●
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 1 and 4 are connected, and ground is
supplied
●
to IPDM E/R terminal 32
●
through front wiper motor terminal 4
●
through front wiper motor terminal 1
●
through grounds E13, E26 and E28.
Then 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.
WASHER OPERATION
When wiper switch is in front wiper washer position, BCM detects front wiper washer signal by BCM wiper
switch reading function (Refer to
WW-7, "COMBINATION SWITCH READING FUNCTION"
), combination
switch (wiper switch) ground is supplied
Power is supplied
●
through 10 A fuse (No. 84 located in IPDM E/R)
●
to combination switch terminal 14
Wiper dial position
Intermittent operation
interval
Combination switch
Intermittent operation
dial position 1
Intermittent operation
dial position 2
Intermittent operation
dial position 3
Wiper dial position 1
Small
↓
Large
ON
ON
ON
Wiper dial position 2
ON
ON
OFF
Wiper dial position 3
ON
OFF
OFF
Wiper dial position 4
OFF
OFF
OFF
Wiper dial position 5
OFF
OFF
ON
Wiper dial position 6
OFF
ON
ON
Wiper dial position 7
OFF
ON
OFF
FRONT WIPER AND WASHER SYSTEM
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through combination switch (wiper switch) terminal 13
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to front and rear washer motor terminal 1
●
to front and rear washer motor terminal 2
●
through combination switch (wiper switch) terminal 11
●
to combination switch terminal 12
●
through grounds M14 and M78.
With ground is supplied, front and rear washer motor is operated.
When BCM detects that front and rear washer motor has operated for 0.4 seconds or linger, 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
If the switch is held in the mist position, low speed operation continues.
FAIL-SAFE FUNCTION
IPDM E/R includes a fail-safe function to prevent malfunction of electrical components controlled by CAN com-
munications in CAN communications occurs.
When fail-safe status is initiated, IPDM E/R remains in steady unit signals are received.
COMBINATION SWITCH READING FUNCTION
Description
●
BCM reads combination switch (wiper) status, and controls related systems such as head lamps and wip-
ers, according to the results.
●
BCM reads information of a maximum of 20 switches by combining five output terminals (OUTPUT 1-5)
and five input terminals (INPUT 1-5).
Operation Description
●
BCM activates transistors of output terminals (OUTPUT 1-5) periodically and, and allows current to flow in
turn.
●
If any (1 or more) switches are turned ON, circuit of output terminals (OUTPUT 1-5) and input terminals
(INPUT 1-5) becomes active.
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●
At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow. When volt-
age of input terminals (INPUT 1-5) corresponding to that switch changes, interface in BCM detects volt-
age change, and BCM determines that switch is ON.
BCM - Operation Table of Combination Switches
●
BCM reads operation status of combination switch using combinations shown in table below.
Sample Operation: (When Wiper Switch Turned ON)
●
When wiper switch is turned ON, contact in combination switch turns ON. At this time if OUTPUT 1 tran-
sistor is activated, BCM detects that voltage changes in INPUT 3.
SKIA4958E
SKIA4959E
FRONT WIPER AND WASHER SYSTEM
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When OUTPUT 1 transistor is ON, BCM detects that voltage changes in INPUT 3, and judges that front
wiper low is ON. Then BCM sends front wiper request signal (LO) to IPDM E/R using CAN communica-
tion.
●
When OUTPUT 1 transistor is activated again, BCM detects that voltage changes in INPUT 3, and recog-
nizes that wiper switch is continuously ON.
NOTE:
Each OUTPUT terminal transistor is activated at 10 ms intervals. Therefore after switch is turned ON, electri-
cal loads are activated with time delay. But this time delay is so short that it cannot be detected by human
senses.
Operation Mode
Combination switch reading function has operation modes shown below.
1.
Normal status
–
When BCM is not in sleep status, OUTPUT terminals (1-5) each turn ON-OFF every 10 ms.
2.
Sleep status
SKIA5290E
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–
When BCM is in sleep status, transistors of OUTPUT (1 and 5) stop the output, and BCM enters low cur-
rent consumption mode. OUTPUT (2, 3, and 4) turn ON-OFF every 10 ms, and only input from light switch
system is accepted.
CAN Communication System Description
AKS005MC
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex 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 CAN 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.
CAN Communication Unit
AKS007R1
Refer to
LAN-8, "CAN Communication Unit"
PKIB4499E
FRONT WIPER AND WASHER SYSTEM
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Schematic
AKS004MV
TKWA1714E
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Wiring Diagram — WIPER —
AKS004MW
TKWA1715E
FRONT WIPER AND WASHER SYSTEM
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TKWA1716E
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FRONT WIPER AND WASHER SYSTEM
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TKWA1717E
FRONT WIPER AND WASHER SYSTEM
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Terminals and Reference Values for BCM
AKS00AMS
Terminal No.
(Wire color)
Signal name
Measuring condition
Reference value
Ignition
switch
Operation or condition
2 (R)
Combination switch input 5
ON
●
Lighting switch and wiper switch
OFF
●
Wiper dial position 4
3 (P/L)
Combination switch input 4
ON
●
Lighting switch and wiper switch
OFF
●
Wiper dial position 4
4 (R/G)
Combination switch input 3
ON
●
Lighting switch and wiper switch
OFF
●
Wiper dial position 4
5 (R/B)
Combination switch input 2
ON
●
Lighting switch and wiper switch
OFF
●
Wiper dial position 4
6 (R/W)
Combination switch input 1
ON
32 (LG/B)
Combination switch output 5
ON
●
Lighting switch and wiper switch
OFF
●
Wiper dial position 4
33 (G/Y)
Combination switch output 4
ON
●
Lighting switch and wiper switch
OFF
●
Wiper dial position 4
34 (LG/R)
Combination switch output 3
ON
●
Lighting switch and wiper switch
OFF
●
Wiper dial position 4
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E
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Terminals and Reference Values for IPDM E/R
AKS00AMT
How to Proceed With Trouble Diagnosis
AKS00AMU
1.
Confirm the symptoms and customer complaint.
2.
Understand operation description and function description. Refer to
3.
Perform the preliminary check. Refer to
.
4.
Check symptom and repair or replace the cause of malfunction.
5.
Does the warning chime operate normally? If YES: GO TO 6. If NO: GO TO 4.
6.
INSPECTION END
35 (G/B)
Combination switch output 2
ON
●
Lighting switch and wiper switch
OFF
●
Wiper dial position 4
36 (L/W)
Combination switch output 1
38 (R)
Ignition switch (ON)
ON
—
Battery voltage
39 (L)
CAN H
—
—
—
40 (Y)
CAN L
—
—
—
42 (GR)
Battery power supply
OFF
—
Battery voltage
49 (B)
Ground
ON
—
Approx. 0 V
52 (B)
Ground
ON
—
Approx. 0 V
55 (W/B)
Battery power supply
OFF
—
Battery voltage
Terminal No.
(Wire color)
Signal name
Measuring condition
Reference value
Ignition
switch
Operation or condition
SKIA5292E
Terminal No.
(Wire color)
Signal name
Measuring condition
Reference value
Ignition switch
Operation or condition
21 (L)
Low speed signal
ON
Wiper switch
OFF
Approx. 0 V
LO
Battery voltage
31 (L/B)
High speed signal
ON
Wiper switch
OFF
Approx. 0 V
HI
Battery voltage
32 (L/Y)
Wiper auto - stop signal
ON
Wiper operating
Battery voltage
Wiper stopped
Approx. 0 V
38 (B)
Ground
ON
—
Approx. 0 V
44 (R/W)
Combination switch (washer
motor)
ON
—
Battery voltage
48 (L)
CAN H
—
—
—
49 (Y)
CAN L
—
—
—
60 (B)
Ground
ON
—
Approx. 0 V
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Preliminary Check
AKS00AMV
CHECK POWER SUPPLY AND GROUND CIRCUIT
Inspection Procedure
1.
CHECK FUSE
●
Check if wiper and washer fuse is blown.
Refer to
WW-12, "Wiring Diagram — WIPER —"
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to
3, "POWER SUPPLY ROUTING CIRCUIT"
.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector.
3.
Check voltage between BCM harness connector terminal 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.
Front wiper motor, front wiper relay, front wiper high relay
Battery
73
BCM
Battery
F
18
Ignition ON or START
1
Combination switch
Ignition ON or START
84
Terminals
Ignition switch position
(+)
(–)
OFF
ON
Connector
Terminal (Wire color)
M35
42 (GR)
Ground
Battery voltage
Battery voltage
M35
55 (W/B)
Battery voltage
Battery voltage
M34
38 (R)
0V
Battery voltage
SKIA9169E
Terminals
Continuity
Connector
Terminal (Wire color)
M35
49 (B)
Ground
Yes
52 (B)
PKIA5191E
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CONSULT-II Functions (BCM)
AKS00AMW
CONSULT-II can display each diagnostic item using the following diagnostic test modes: self-diagnostic
results, data monitor and active test through data reception and command transmission via the BCM CAN
communication line.
CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1.
With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn the
ignition switch ON.
2.
Touch “START (NISSAN BASED VHCL)”.
3.
Touch “BCM” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, refer to
BCM diagnosis position
Check item, Diagnosis mode
Description
Wiper
WORK SUPPORT
Changes the setting for wiper speed at intermittent.
DATA MONITOR
Displays BCM input data in real time.
ACTIVE TEST
Device operation can be checked by applying a drive signal to device.
BCM
CAN DIAG SUPPORT MNTR
The result of transmit/receive diagnosis of CAN communication can be read.
PBIB1300E
SKIA3098E
PKIA6323E
FRONT WIPER AND WASHER SYSTEM
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4.
Touch “WIPER”.
WORK SUPPORT
Operation Procedure
1.
Touch “WIPER” on “SELECT TEST ITEM” screen.
2.
Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
3.
Touch “WIPER SPEED SETTING” on “SELECT WORK ITEM” screen.
4.
Touch “START”.
5.
Touch “CHANGE SETT”.
6.
The setting will be changed and “CUSTOMIZING COMPLETED” will be displayed.
7.
Touch “END”.
Display Item List
DATA MONITOR
Operation Procedure
1.
Touch “WIPER” on “SELECT TEST ITEM” screen.
2.
Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3.
Touch either “ALL SIGNALS” or “SELECTION FROM MENU” on “DATA MONITOR” screen.
4.
Touch “START”.
5.
When “SELECTION FROM MENU” is selected, touched items to be monitored. If “ALL SIGNALS” is
selected, all items will be monitored.
6.
Touch “RECORDING START” while monitoring to record the status of the item being monitored. To stop
recording, touch “RECORDING STOP”.
Display Item List
PKIA6100E
Item
Description
CONSULT-II
Factory setting
WIPER SPEED
SETTING
Vehicle speed sensing type wiper control mode can be changed in this
mode. Selects vehicle speed sensing type wiper control mode between
two ON/OFF.
ON
×
OFF
—
ALL SIGNALS
Monitors all the signals.
SELECTION FROM MENU
Selects and monitors individual signals.
Monitor item [operation or unit]
Display content
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.
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NOTE:
This item is displayed, but cannot monitor it.
ACTIVE TEST
Operation Procedure
1.
Touch “WIPER” on the “SELECT TEST ITEM” screen.
2.
Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3.
Touch items to be tested, and check operation.
4.
During operation check, touching “STOP” deactivates operation.
Display Item List
CONSULT-II Functions (IPDM E/R)
AKS00AMX
CONSULT-II can display each diagnostic item using the following diagnostic test modes: self-diagnostic
results, data monitor and active test through data reception and command transmission via the IPDM E/R
CAN communication line.
CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1.
With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn the
ignition switch ON.
FR WIPER STOP
[ON/OFF]
Displays “Stopped (ON)/Operating (OFF)” status as judged from the auto-stop signal.
VEHICLE SPEED
[km/h]
Displays vehicle speed status as judged from vehicle speed signal.
RR WIPER ON
[ON/OFF]
Displays “Rear Wiper ON (ON)/Other (OFF)” status as judged from wiper switch signal.
RR WIPER INT
[ON/OFF]
Displays “Rear Wiper INT (ON)/Other (OFF)” status as judged from wiper switch signal.
RR WASHER SW
[ON/OFF]
Displays “Rear Washer Switch (ON)/Other (OFF)” status as judged from wiper switch signal.
RR WIPER STOP
[ON/OFF]
Displays “Rear Wiper Stop (ON)/Other (OFF)” status, as judged from wiper switch signal.
RR WIPER STP2
NOTE
[OFF]
—
Monitor item [operation or unit]
Display content
Test item
Indication on
CONSULT-II display
Description
Front wiper output
FR WIPER
With a certain operation (OFF, HI, LO, INT), the front wiper can be operated.
Rear wiper output
RR WIPER
Rear wiper can be operated by any ON-OFF operation.
Inspection Item, Diagnosis Mode
Description
SELF-DIAG RESULTS
The IPDM E/R performs diagnosis of the CAN communication and self-diagnosis.
DATA MONITOR
The input/output data of the 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
The IPDM E/R sends a drive signal to electronic components to check their operation.
PBIB1300E
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