Murano Cross Cabriolet Z51 (2012 year). Manual

COMPONENT PARTS

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< SYSTEM DESCRIPTION >

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000007566609

Combination switch

Combination meter

Washer level switch

Washer pump

Front wiper motor

IPDM E/R

BCM

Radiator core support (RH)

Cowl top, left side of engine room

Engine room (left side)

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

WW-6, "Washer Switch"

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 >

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

WW-11, "WIPER :

CONSULT Function - WIPER"

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

Short

↑

↓

Long

0.8

0.6

0.4

0.24

1.2

7.5

4.8

7.2

9.6

31.5

12.6

JPLIA1256GB

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SYSTEM

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< SYSTEM DESCRIPTION >

• 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

OFF

The front wiper stop position signal (stop position) cannot be input for 10 seconds.

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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< SYSTEM DESCRIPTION >

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

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)

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

→

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

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

−

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

Transmits the front wiper request signal (HI) to IPDM E/R via CAN communication to op-
erate the front wiper HI operation.

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.

Revision: 2013 February

2012 Murano CrossCabriolet

DIAGNOSIS SYSTEM (IPDM E/R)

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< SYSTEM DESCRIPTION >

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

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.

Turn the ignition switch OFF.

Turn the ignition switch ON, and within 20 seconds, press the front door switch (driver side) 10 times.
Then turn the ignition switch OFF.

Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.

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

DLK-55,

"Component Function Check"

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

Oil pressure warning lamp

Blinks continuously during operation of auto active test

Front wiper motor

LO for 5 seconds

→

HI for 5 seconds

• Parking lamp
• License plate lamp
• Side maker lamp
• Tail lamp
• Front fog lamp

10 seconds

Headlamp

⇔

HI 5 times

A/C compressor (magnet clutch)

⇔

OFF 5 times

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

• 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

• 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

• CAN communication signal between

IPDM E/R and BCM

• CAN communication signal between

BCM and combination meter

• Combination meter

Revision: 2013 February

2012 Murano CrossCabriolet

DIAGNOSIS SYSTEM (IPDM E/R)

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< SYSTEM DESCRIPTION >

CONSULT Function (IPDM E/R)

INFOID:0000000007805661

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with IPDM E/R.

SELF DIAGNOSTIC RESULT

Refer to

PCS-23, "DTC Index"

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

• 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]