Murano Cross Cabriolet Z51 (2012 year). Manual — part 109
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< PRECAUTION >
PRECAUTIONS
Precaution for Procedure without Cowl Top Cover
INFOID:0000000007566608
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc to prevent damage to
windshield.
PIIB3706J
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COMPONENT PARTS
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< SYSTEM DESCRIPTION >
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SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location
INFOID:0000000007566609
1.
Combination switch
2.
Combination meter
3.
Washer level switch
4.
Washer pump
5.
Front wiper motor
6.
IPDM E/R
7.
BCM
A.
Radiator core support (RH)
B.
Cowl top, left side of engine room
C.
Engine room (left side)
D.
Behind combination meter
JMLIA2261ZZ
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< SYSTEM DESCRIPTION >
COMPONENT PARTS
Component Description
INFOID:0000000007566610
Washer Switch
INFOID:0000000007566611
• Washer switch is integrated with combination switch.
• Washer pump is grounded through the combination switch with the washes switch ON.
Part
Description
IPDM E/R
• Controls the integrated relay according to the request (via CAN communication) from BCM.
• Performs the auto stop control of the front wiper.
BCM
• Judges the each switch status by the combination switch reading function.
• Requests (via CAN communication) the front wiper relay and the front wiper high relay ON to
IPDM E/R.
• Supplies power to the wiper motor.
Combination switch
(Wiper & washer switch)
Refer to
BCS-6, "COMBINATION SWITCH READING SYSTEM : System Description"
Washer switch
Refer to
.
Washer pump
Washer fluid is sprayed according to washer switch states.
Washer level switch
Refer to
MWI-6, "METER SYSTEM : Component Description"
.
Front wiper motor
• IPDM E/R controls front wiper operation.
• Front wiper stop position signal is transmitted to IPDM E/R.
Combination meter
Transmits the vehicle speed signal to BCM via CAN communication.
JPLIA0310ZZ
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SYSTEM
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< SYSTEM DESCRIPTION >
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SYSTEM
FRONT WIPER AND WASHER SYSTEM
FRONT WIPER AND WASHER SYSTEM : System Diagram
INFOID:0000000007566612
FRONT WIPER AND WASHER SYSTEM : System Description
INFOID:0000000007566613
OUTLINE
The front wiper is controlled by each function of BCM and IPDM E/R.
Control by BCM
• Combination switch reading function
• Front wiper control function
Control by IPDM E/R
• Front wiper control function
• Relay control function
Combination meter indicates low washer fluid warning judged with the signal from the washer level switch. For
details of low washer fluid warning, refer to
MWI-15, "INFORMATION DISPLAY : System Description"
.
FRONT WIPER BASIC OPERATION
• BCM detects the combination switch condition by the combination switch reading function.
• BCM transmits the front wiper request signal to IPDM E/R with CAN communication depending on each
operating condition of the front wiper.
• IPDM E/R turns ON/OFF the integrated front wiper relay and the front wiper high relay according to the front
wiper request signal. IPDM E/R provides the power supply to operate the front wiper HI/LO operation.
FRONT WIPER LO OPERATION
• BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the
front wiper LO operating condition.
Front wiper LO operating condition
- Ignition switch ON
- Front wiper switch LO or front wiper switch MIST (while pressing)
• IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).
FRONT WIPER HI OPERATION
• BCM transmits the front wiper request signal (HI) to IPDM E/R with CAN communication according to the
front wiper HI operating condition.
Front wiper HI operating condition
- Ignition switch ON
- Front wiper switch HI
• IPDM E/R turns ON the integrated front wiper relay and the front wiper high relay according to the front wiper
request signal (HI).
JMLIA2011GB
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< SYSTEM DESCRIPTION >
SYSTEM
FRONT WIPER INT OPERATION
• BCM transmits the front wiper request signal (INT) to IPDM E/R with CAN communication depending on the
front wiper INT operating condition and intermittent operation delay interval according to the wiper intermit-
tent dial position.
Front wiper INT operating condition
- Ignition switch ON
- Front wiper switch INT
• IPDM E/R turns ON the integrated front wiper relay so that the front wiper is operated only once according to
the front wiper request signal (INT).
• BCM detects stop position/except stop position of the front wiper motor according to the front wiper stop
position signal received from IPDM E/R with CAN communication.
• BCM transmits the front wiper request signal (INT) again after the intermittent operation delay interval.
NOTE:
Factory setting of the front wiper intermittent operation is the operation without vehicle speed. Front wiper
intermittent operation can be set to the operation with vehicle speed by CONSULT. Refer to
Front wiper intermittent operation with vehicle speed
• BCM calculates the intermittent operation delay interval from the following
- Vehicle speed signal (received from the combination meter with CAN communication)
- Wiper intermittent dial position
*: When without vehicle speed setting
FRONT WIPER AUTO STOP OPERATION
• BCM stops transmitting the front wiper request signal when the front wiper switch is turned OFF.
• IPDM E/R detects the front wiper stop position signal from the front wiper motor and detects the front wiper
motor position (stop position/except stop position).
Wiper intermittent
dial position
Intermittent
operation
interval
Intermittent operation delay Interval (s)
Vehicle speed
0 – 5 km/h
(0 – 3.1 MPH)
5 – 35 km/h
(3.1 – 21.7 MPH)
35 – 65 km/h*
(21.7 – 40.4 MPH)
65 km/h (40.4 MPH)
or more
1
Short
↑
↓
Long
0.8
0.6
0.4
0.24
2
4
3
2
1.2
3
10
7.5
5
3
4
16
12
8
4.8
5
24
18
12
7.2
6
32
24
16
9.6
7
42
31.5
21
12.6
JPLIA1256GB
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SYSTEM
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< SYSTEM DESCRIPTION >
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• When the front wiper request signal is stopped, IPDM E/R turns ON the front wiper relay until the front wiper
motor returns to the stop position.
NOTE:
• BCM stops the transmitting of the front wiper request signal when the ignition switch is OFF.
• IPDM E/R turns the front wiper relay OFF when the ignition switch is OFF.
FRONT WIPER OPERATION LINKED WITH WASHER
• BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the
washer linked operating condition of the front wiper.
• BCM transmits the front wiper request signal (LO) so that the front wiper operates approximately 2 times
when the front washer switch OFF is detected.
Washer linked operating condition of front wiper
- Ignition switch ON
- Front washer switch ON (0.4 second or more)
• IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).
• The washer pump is grounded through the combination switch with the washer switch ON.
FRONT WIPER AND WASHER SYSTEM : Fail-Safe
INFOID:0000000007566614
When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN
communication recovers normally, it also returns to normal control.
If No CAN Communication Is Available With BCM
IPDM E/R detects front wiper stop position by a front wiper stop position signal.
When a front wiper stop position signal is in the conditions listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 seconds activation and 20 seconds stop.
NOTE:
This operation status can be confirmed on the IPDM E/R “Data Monitor” that displays “BLOCK” for the item
“WIP PROT” while the wiper is stopped.
JPLIA0410GB
Control part
Fail-safe operation
Front wiper motor
• The status just before activation of fail-safe control is maintained until the ignition switch is turned OFF while
the front wiper is operating at LO or HI speed.
• The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-safe control is activated
while the front wiper is set in the INT mode and the front wiper motor is operating.
• Returns automatically wiper to stop position when ignition switch is turned ON if fail-safe control is activated
while front wiper motor is operated and wiper stop in the other position than stop position.
• The status is held at service position if the fail-safe control is activated while the service position function is
operating.
Ignition switch
Front wiper switch
Front wiper stop position signal
ON
OFF
The front wiper stop position signal (stop position) cannot be input for 10 seconds.
ON
The front wiper stop position signal does not change for 10 seconds.
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< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)
INFOID:0000000007805659
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
×
: Applicable item
NOTE:
*: This item is displayed, but is not used.
FREEZE FRAME DATA (FFD)
The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT.
Diagnosis mode
Function Description
Work Support
Changes the setting for each system function.
Self Diagnostic Result
Displays the diagnosis results judged by BCM.
CAN Diag Support Monitor
Monitors the reception status of CAN communication viewed from BCM.
Data Monitor
The BCM input/output signals are displayed.
Active Test
The signals used to activate each device are forcibly supplied from BCM.
Ecu Identification
The BCM part number is displayed.
Configuration
• Read and save the vehicle specification.
• Write the vehicle specification when replacing BCM.
System
Sub system selection item
Diagnosis mode
Work Support
Data Monitor
Active Test
Door lock
DOOR LOCK
×
×
×
Rear window defogger
REAR DEFOGGER
×
×
Warning chime
BUZZER
×
×
Interior room lamp timer
INT LAMP
×
×
×
Exterior lamp
HEAD LAMP
×
×
×
Wiper and washer
WIPER
×
×
×
Turn signal and hazard warning lamps
FLASHER
×
×
×
—
AIR CONDITONER*
• Intelligent Key system
• Engine start system
INTELLIGENT KEY
×
×
×
Combination switch
COMB SW
×
Body control system
BCM
×
NVIS - NATS
IMMU
×
×
Interior room lamp battery saver
BATTERY SAVER
×
×
×
Trunk lid opener system
TRUNK
×
×
Vehicle security system
THEFT ALM
×
×
×
RAP system
RETAINED PWR
×
Signal buffer system
SIGNAL BUFFER
×
×
TPMS
AIR PRESSURE MONITOR
×
×
×
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DIAGNOSIS SYSTEM (BCM)
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NOTE:
*: Power supply position shifts to “LOCK” from “OFF”, when ignition switch is in the OFF position, selector lever is in the P position, and
any of the following conditions are met.
• Closing door
• Opening door
• Door is locked using door request switch
• Door is locked using Intelligent Key
The power supply position shifts to “ACC” when the push-button ignition switch (push switch) is pushed at “LOCK”.
WIPER
WIPER : CONSULT Function - WIPER
INFOID:0000000007566616
WORK SUPPORT
CONSULT screen item
Indication/Unit
Description
Vehicle Speed
km/h
Vehicle speed of the moment a particular DTC is detected
Odo/Trip Meter
km
Total mileage (Odometer value) of the moment a particular DTC is detected
Vehicle Condition
SLEEP>LOCK
Power position status of
the moment a particular
DTC is detected
While turning BCM status from low power consumption mode to
normal mode (Power supply position is “LOCK”*)
SLEEP>OFF
While turning BCM status from low power consumption mode to
normal mode (Power supply position is “OFF”.)
LOCK>ACC
While turning power supply position from “LOCK” to “ACC”
ACC>ON
While turning power supply position from “ACC” to “IGN”
RUN>ACC
While turning power supply position from “RUN” to “ACC” (Vehicle
is stopping and selector lever is except P position.)
CRANK>RUN
While turning power supply position from “CRANKING” to “RUN”
(From cranking up the engine to run it)
RUN>URGENT
While turning power supply position from “RUN“ to “ACC” (Emer-
gency stop operation)
ACC>OFF
While turning power supply position from “ACC” to “OFF”
OFF>LOCK
While turning power supply position from “OFF” to “LOCK”*
OFF>ACC
While turning power supply position from “OFF” to “ACC”
ON>CRANK
While turning power supply position from “IGN” to “CRANKING”
OFF>SLEEP
While turning BCM status from normal mode (Power supply posi-
tion is “OFF”.) to low power consumption mode
LOCK>SLEEP
While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”*) to low power consumption mode
LOCK
Power supply position is “LOCK”*
OFF
Power supply position is “OFF” (Ignition switch OFF)
ACC
Power supply position is “ACC” (Ignition switch ACC)
ON
Power supply position is “IGN” (Ignition switch ON with engine
stopped)
ENGINE RUN
Power supply position is “RUN” (Ignition switch ON with engine
running)
CRANKING
Power supply position is “CRANKING” (At engine cranking)
IGN Counter
0 - 39
The number of times that ignition switch is turned ON after DTC is detected
• The number is 0 when a malfunction is detected now.
• The number increases like 1
→
2
→
3...38
→
39 after returning to the normal condition
whenever ignition switch OFF
→
ON.
• The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
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< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
*:Factory setting
DATA MONITOR
ACTIVE TEST
Service item
Setting item
Description
WIPER SPEED
SETTING
On
With vehicle speed
(Front wiper intermittent time linked with the vehicle speed and wiper intermittent dial position)
Off*
Without vehicle speed
(Front wiper intermittent time linked with the wiper intermittent dial position)
Monitor Item
[Unit]
Description
PUSH SW
[Off/On]
The switch status input from push-button ignition switch
VEH SPEED 1
[km/h]
Displays the value of the vehicle speed signal received from combination meter via CAN com-
munication
FR WIPER HI
[Off/On]
Status of each switch judged by BCM using the combination switch reading function
FR WIPER LOW
[Off/On]
FR WASHER SW
[Off/On]
FR WIPER INT
[Off/On]
FR WIPER STOP
[Off/On]
Displays the status of the front wiper stop position signal received from IPDM E/R via CAN
communication.
INT VOLUME
[1
−
7]
Status of each switch judged by BCM using the combination switch reading function
H/L WASH SW
[Off/On]
NOTE:
The item is indicated, but not monitored
Test item
Operation
Description
FR WIPER
Hi
Transmits the front wiper request signal (HI) to IPDM E/R via CAN communication to op-
erate the front wiper HI operation.
Lo
Transmits the front wiper request signal (LO) to IPDM E/R via CAN communication to
operate the front wiper LO operation.
INT
Transmits the front wiper request signal (INT) to IPDM E/R via CAN communication to
operate the front wiper INT operation.
Off
Stops transmitting the front wiper request signal to stop the front wiper operation.
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DIAGNOSIS SYSTEM (IPDM E/R)
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DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis Description
INFOID:0000000007805660
AUTO ACTIVE TEST
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Oil pressure warning lamp
• Front wiper (LO, HI)
• Parking lamp
• License plate lamp
• Side maker lamp
• Tail lamp
• Front fog lamp
• Headlamp (LO, HI)
• A/C compressor (magnet clutch)
• Cooling fan
Operation Procedure
NOTE:
Never perform auto active test in the following conditions.
• CONSULT is connected
• Passenger door is open
1.
Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2.
Turn the ignition switch OFF.
3.
Turn the ignition switch ON, and within 20 seconds, press the front door switch (driver side) 10 times.
Then turn the ignition switch OFF.
4.
Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.
5.
After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
• When auto active test has to be cancelled halfway through test, turn the ignition switch OFF.
• When auto active test is not activated, door switch may be the cause. Check door switch. Refer to
Inspection in Auto Active Test Mode
When auto active test mode is actuated, the following 6 steps are repeated 3 times.
Operation
sequence
Inspection location
Operation
1
Oil pressure warning lamp
Blinks continuously during operation of auto active test
2
Front wiper motor
LO for 5 seconds
→
HI for 5 seconds
3
• Parking lamp
• License plate lamp
• Side maker lamp
• Tail lamp
• Front fog lamp
10 seconds
4
Headlamp
LO
⇔
HI 5 times
5
A/C compressor (magnet clutch)
ON
⇔
OFF 5 times
6
Cooling fan
LO for 5 seconds
→
MID for 3 seconds
→
HI for 2 seconds
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< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (IPDM E/R)
Concept of auto active test
• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test mode
JMMIA0836GB
Symptom
Inspection contents
Possible cause
Any of the following components do not operate
• Parking lamp
• License plate lamp
• Side maker lamp
• Tail lamp
• Front fog lamp
• Headlamp (HI, LO)
• Front motor wiper
Perform auto active test.
Does the applicable system
operate?
YES
BCM signal input circuit
NO
• Lamp or motor
• Lamp or motor ground circuit
• Harness or connector between
IPDM E/R and applicable system
• IPDM E/R
A/C compressor does not operate
Perform auto active test.
Does the magnet clutch oper-
ate?
YES
• A/C amp. signal input circuit
• CAN communication signal between
A/C amp. and ECM
• CAN communication signal between
ECM and IPDM E/R
NO
• Magnet clutch
• Harness or connector between
IPDM E/R and magnet clutch
• IPDM E/R
Oil pressure warning lamp does not operate
Perform auto active test.
Does the oil pressure warning
lamp blink?
YES
• Harness or connector between
IPDM E/R and oil pressure switch
• Oil pressure switch
• IPDM E/R
NO
• CAN communication signal between
IPDM E/R and BCM
• CAN communication signal between
BCM and combination meter
• Combination meter
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DIAGNOSIS SYSTEM (IPDM E/R)
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CONSULT Function (IPDM E/R)
INFOID:0000000007805661
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC RESULT
DATA MONITOR
Monitor item
Cooling fan does not operate
Perform auto active test.
Does the cooling fan operate?
YES
• ECM signal input circuit
• CAN communication signal between
ECM and IPDM E/R
NO
• Harness or connector between
IPDM E/R and cooling fan motor
• Harness or connector between
IPDM E/R and cooling fan relay
• Cooling fan motor
• Cooling fan relay
• IPDM E/R
Symptom
Inspection contents
Possible cause
Diagnosis mode
Description
Ecu Identification
Allows confirmation of IPDM E/R part number.
Self Diagnostic Result
Displays the diagnosis results judged by IPDM E/R.
Data Monitor
Displays the real-time input/output data from IPDM E/R input/output data.
Active Test
IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor
The results of transmit/receive diagnosis of CAN communication can be read.
Monitor Item
[Unit]
MAIN SIG-
NALS
Description
MOTOR FAN REQ
[1/2/3/4]
×
Displays the value of the cooling fan speed request signal received from ECM via
CAN communication.
AC COMP REQ
[Off/On]
×
Displays the status of the A/C compressor request signal received from ECM via
CAN communication.
TAIL&CLR REQ
[Off/On]
×
Displays the status of the position light request signal received from BCM via CAN
communication.
HL LO REQ
[Off/On]
×
Displays the status of the low beam request signal received from BCM via CAN
communication.
HL HI REQ
[Off/On]
×
Displays the status of the high beam request signal received from BCM via CAN
communication.
FR FOG REQ
[Off/On]
×
Displays the status of the front fog light request signal received from BCM via
CAN communication.
FR WIP REQ
[Stop/1LOW/Low/Hi]
×
Displays the status of the front wiper request signal received from BCM via CAN
communication.
WIP AUTO STOP
[STOP P/ACT P]
×
Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[Off/BLOCK]
×
Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
IGN RLY1 -REQ
[Off/On]
Displays the status of the ignition switch ON signal received from BCM via CAN
communication.
IGN RLY
[Off/On]
×
Displays the status of the ignition relay judged by IPDM E/R.
PUSH SW
[Off/On]
Displays the status of the push-button ignition switch judged by IPDM E/R.
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< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (IPDM E/R)
ACTIVE TEST
Test item
INTER/NP SW
[Off/On]
Displays the status of the shift position judged by IPDM E/R.
ST RLY CONT
[Off/On]
Displays the status of the starter relay status signal received from BCM via CAN
communication.
IHBT RLY -REQ
[Off/On]
Displays the status of the starter control relay signal received from BCM via CAN
communication.
ST/INHI RLY
[Off/ ST ON/INHI ON/UNKWN]
Displays the status of the starter relay and starter control relay judged by IPDM
E/R.
DETENT SW
[Off/On]
Displays the status of the CVT shift selector (detention switch) judged by IPDM E/
R.
S/L RLY -REQ
[Off/On]
NOTE:
The item is indicated, but not monitored.
S/L STATE
[LOCK/UNLOCK/UNKWN]
NOTE:
The item is indicated, but not monitored.
DTRL REQ
[Off/On]
NOTE:
The item is indicated, but not monitored.
OIL P SW
[Open/Close]
Displays the status of the oil pressure switch judged by IPDM E/R.
HOOD SW
[Off/On]
NOTE:
The item is indicated, but not monitored.
HL WASHER REQ
[Off/On]
NOTE:
The item is indicated, but not monitored.
THFT HRN REQ
[Off/On]
Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
HORN CHIRP
[Off/On]
Displays the status of the horn reminder signal received from BCM via CAN com-
munication.
CRNRNG LMP REQ
[Off/On]
NOTE:
The item is indicated, but not monitored.
Monitor Item
[Unit]
MAIN SIG-
NALS
Description
Test item
Operation
Description
CORNERING LAMP
Off
NOTE:
The item is indicated, but cannot be tested.
LH
RH
HORN
On
Operates horn relay for 20 ms.
FRONT WIPER
Off
OFF
Lo
Operates the front wiper relay.
Hi
Operates the front wiper relay and front wiper high relay.
MOTOR FAN
1
OFF
2
Operates the cooling fan relay-1.
3
Operates the cooling fan relay-2.
4
Operates the cooling fan relay-2 and cooling fan relay-3.
HEAD LAMP WASHER
On
NOTE:
The item is indicated, but cannot be tested.
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DIAGNOSIS SYSTEM (IPDM E/R)
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< SYSTEM DESCRIPTION >
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EXTERNAL LAMPS
Off
OFF
TAIL
Operates the tail lamp relay.
Lo
Operates the headlamp low relay.
Hi
Operates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.
Fog
Operates the front fog lamp relay.
Test item
Operation
Description
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< ECU DIAGNOSIS INFORMATION >
BCM, IPDM E/R
ECU DIAGNOSIS INFORMATION
BCM, IPDM E/R
List of ECU Reference
INFOID:0000000007566619
ECU
Reference
BCM
BCS-53, "DTC Inspection Priority Chart"
IPDM E/R
Revision: 2013 February
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WIPER AND WASHER SYSTEM
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< WIRING DIAGRAM >
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WIRING DIAGRAM
WIPER AND WASHER SYSTEM
Wiring Diagram
INFOID:0000000007566620
JCLWA5328GB
Revision: 2013 February
2012 Murano CrossCabriolet
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