Nissan Murano Z50 (2005 year). Manual - part 194

 

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Nissan Murano Z50 (2005 year). Manual - part 194

 

 

POWER SUPPLY ROUTING CIRCUIT

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TKWA1753E

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POWER SUPPLY ROUTING CIRCUIT

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Fuse 

AKS007HG

If fuse is blown, be sure to eliminate cause of malfunction before
installing new fuse.

Use fuse of specified rating. Never use fuse of more than speci-
fied rating.

Do not partially install fuse; always insert it into fuse holder prop-
erly.

Remove fuse for “ELECTRICAL PARTS (BAT)” if vehicle is not
used for a long period of time.

Fusible Link

AKS007HH

A melted fusible link can be detected either by visual inspection or by
feeling with finger tip. If its condition is questionable, use circuit
tester or test lamp.

CAUTION:

If fusible link should melt, it is possible that critical circuit
(power supply or large current carrying circuit) is shorted.
In such a case, carefully check and eliminate cause of mal-
function.

Never wrap outside of fusible link with vinyl tape. Important:
Never let fusible link touch any other wiring harness, vinyl
or rubber parts.

Circuit Breaker 

AKS007HI

The PTC thermistor generates heat in response to current flow. The
temperature (and resistance) of the thermistor element varies with
current flow. Excessive current flow will cause the element's temper-
ature to rise. When the temperature reaches a specified level, the
electrical resistance will rise sharply to control the circuit current.
Reduced current flow will cause the element to cool. Resistance falls
accordingly and normal circuit current flow is allowed to resume.

CEL083

CKIA0274E

SEL109W

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

PFP:284B7

System Description

AKS00A49

IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It controls integrated relay via IPDM E/R control cir-
cuit.

IPDM E/R-integrated control circuit performs ON-OFF operation of relay, CAN communication control, oil
pressure switch signal, and hood switch signal reception, etc.

It controls operation of each electrical part via ECM, BCM and CAN communication lines.

CAUTION:

None of the IPDM E/R-integrated relays can be removed.

SYSTEMS CONTROLLED BY IPDM E/R

1.

Lamp control
Using CAN communication line, it receives signal from BCM and controls the following lamps:

Headlamps (Hi, Lo)

Parking lamps

Tail lamps

Front fog lamps

2.

Wiper control
Using CAN communication line, it receives signals from BCM and controls the front wipers.

3.

Rear window defogger relay control
Using CAN communication line, it receives signals from BCM and controls the rear window defogger
relay.

4.

A/C compressor control
Using CAN communication line, it receives signals from ECM and controls the A/C relay.

5.

Cooling fan control
Using CAN communication line, it receives signals from ECM and controls cooling fan relay.

6.

Horn control
Using CAN communication line, it receives signals from BCM and controls horn relay.

CAN COMMUNICATION LINE CONTROL

With CAN communication, by connecting each control unit using two communication lines (CAN L line, CAN H
line), it is possible to transmit maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.

1.

Fail-safe control

When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication recovers normally, it also returns to normal control.

Operation of control parts by IPDM E/R during fail-safe mode is as follows:

Controlled system

Fail-safe mode

Headlamp

With the ignition switch ON, the headlamp (low) is ON. 

With the ignition switch OFF, the headlamp (low) is OFF. 

Tail and parking lamps

With the ignition switch ON, the tail and parking lamps is ON. 

With the ignition switch OFF, the tail and parking lamps is OFF. 

Cooling fan

With the ignition switch ON, the cooling fan HI operates.

With the ignition switch OFF, the cooling fan stops.

Front wiper

Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it 
was in just before fail

safe control was initiated.

Rear window defogger

Rear window defogger relay OFF

A/C compressor

A/C compressor OFF

Front fog lamps 

Front fog lamp relay OFF

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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IPDM E/R STATUS CONTROL

In order to save power, IPDM E/R switches status by itself based on each operating condition.

1.

CAN communication status

CAN communication is normally performed with other control units.

Individual unit control by IPDM E/R is normally performed.

When sleep request signal is received from BCM, mode is switched to sleep waiting status.

2.

Sleep waiting status

Process to stop CAN communication is activated.

All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communi-
cation with other control units is stopped, mode switches to sleep status.

3.

Sleep status

IPDM E/R operates in low power mode.

CAN communication is stopped.

When a change in CAN communication line is detected, mode switches to CAN communication status.

When a change hood switch or ignition switch signal is detected, mode switches to CAN communica-
tion status.

CAN Communication System Description

AKS00A4A

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. Modern
vehicles are equipped with many electronic control units and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected 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

AKS00AOH

Refer to 

LAN-29, "CAN Communication Unit"

 .

Function of Detecting Ignition Relay Malfunction

AKS00A4C

When contact point of integrated ignition relay is stuck and cannot be turned OFF, IPDM E/R turns ON tail
and parking lamps for 10 minutes to indicate ignition relay malfunction.

When a state of ignition relay having built-in does not agree with a state of Ignition switch signal input by a
CAN communication from BCM, IPDM E/R lets tail lamp relay operate.

NOTE:
When the ignition switch is turned ON, the tail lamps are OFF.

Ignition switch signal

Ignition relay status

Tail lamp relay

ON

ON

OFF

OFF

ON

OFF

OFF

ON

ON (10 minutes)

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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CONSULT-II Function (IPDM E/R)

AKS00A4D

CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.

CONSULT-II INSPECTION PROCEDURE

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 “IPDM E/R” on “SELECT SYSTEM” screen.
If “IPDM E/R” is not indicated, go to 

GI-39, "CONSULT-II Data

Link Connector (DLC) Circuit"

 .

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

BCIA0029E

BCIA0030E

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4.

Select the desired part to be diagnosed on the “SELECT DIAG
MODE” screen.

SELF-DIAG RESULTS
Operation Procedure

1.

Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.

2.

Check display content in self-diagnostic results.

Display Item List

NOTE:

The details for display of the period are as follows:

CRNT: Error currently detected with IPDM E/R.

PAST: Error detected in the past and memorized with IPDM E/R.

BCIA0031E

Display Items

CONSULT-II 
display code

Malfunction detecting condition

TIME

Possible causes

CRNT

PAST

NO DTC IS 
DETECTED.FURTHER 
TESTING MAY BE 
REQUIRED.

-

-

-

-

-

CAN COMM CIRC

U1000

If CAN communication reception/transmis-
sion data has a malfunction, or if any of the 
control units malfunction, data reception/
transmission cannot be confirmed.

When the data in CAN communication is not 
received before the specified time

×

×

Any of or several items 
below have errors.

TRANSMIT DIAG

ECM

BCM/SEC

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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DATA MONITOR
Operation Procedure

1.

Touch “DATA MONITOR” on “SELECT MONITOR ITEM ” screen.

2.

Touch “ALL SIGNALS”, “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR”
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 the ignition switch ON. When the ignition switch is at ACC, the display may not be cor-
rect.

*1: This item is displayed, but does not function.

*2: The vehicle without the Intelligent Key system displays only ON without change.

ALL SIGNALS

All items will be monitored.

MAIN SIGNALS

Monitor the predetermined item.

SELECTION FROM MENU

Select any item for monitoring.

Item name

CONSULT-II 

screen display

Display or unit

Monitor item selection

Description

ALL

SIGNALS

MAIN 

SIGNALS

SELEC-

TION 

FROM 
MENU

Motor fan request

MOTOR FAN REQ

1/2/3/4

×

×

×

Signal status input from ECM

Compressor request

AC COMP REQ

ON/OFF

×

×

×

Signal status input from ECM

Tail & clear request

TAIL&CLR REQ

ON/OFF

×

×

×

Signal status input from BCM

H/L LO request

HL LO REQ

ON/OFF

×

×

×

Signal status input from BCM

H/L HI request

HL HI REQ

ON/OFF

×

×

×

Signal status input from BCM

Front fog request 

FR FOG REQ

ON/OFF

×

×

×

Signal status input from BCM

Head lamp washer 
request

HL WASHER 

REQ

*1

ON/OFF

×

×

Signal status input from BCM

Front wiper request

FR WIP REQ

STOP/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

Starter request

ST RLY REQ

*2

ON/OFF

×

×

Status of input signal 

Ignition relay status

IGN RLY

ON/OFF

×

×

×

Ignition relay status monitored 
with IPDM E/R

Rear window defog-
ger request

RR DEF REQ

ON/OFF

×

×

×

Signal status input from BCM

Oil pressure switch 

OIL P SW

OPEN/CLOSE

×

×

Signal status input in IPDM E/R

Day time light request

DTRL REQ

*1

ON/OFF

×

×

Signal status input from BCM

Hood switch

HOOD SW

ON/OFF

×

×

Signal status input in IPDM E/R

Theft warning horn 
request

THFT HRN REQ

ON/OFF

×

×

Signal status input from BCM

Horn chirp

HORN CHIRP

ON/OFF

×

×

Output status of IPDM E/R

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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ACTIVE TEST
Operation Procedure

1.

Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.

2.

Touch item to be tested.

3.

Touch “START”, and confirm its operation.

4.

Touch “STOP” while testing to stop the operation.

NOTE:
This item is displayed, but cannot be tested.

Test item

CONSULT-II screen display

Description

Tail lamp operation

TAIL LAMP

With a certain ON-OFF operation, the tail lamp relay can be oper-
ated.

Rear window defogger opera-
tion

REAR DEFOGGER

With a certain ON-OFF operation, the rear window defogger relay 
can be operated.

Front wiper (HI, LO) operation

FRONT WIPER

With a certain operation (OFF, HI ON, LO ON), the front wiper relay 
(Lo, Hi) can be operated.

Cooling fan operation

MOTOR FAN

With a certain operation (1,2,3,4), the cooling fan can be operated.

Headlamp washer operation

HEAD LAMP WASHER

 NOTE

Lamp (HI, LO, FOG) operation

LAMPS

With a certain operation (OFF, HI ON, LO ON, FOG ON), the lamp 
relay (Lo, Hi, Fog) can be operated.

Horn operation

HORN

Push “ON” button, horn relay operates 20ms.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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Auto Active Test

AKS00A4E

DESCRIPTION

In auto active test mode, operation inspection can be performed when IPDM E/R sends a drive signal to
the following systems:

Rear window defogger

Front wipers

Tail lamps and parking lamps

Front fog lamps

Headlamps (Hi, Lo)

A/C compressor (magnetic clutch)

Cooling fan

OPERATION PROCEDURE

1.

Close hood and front door (passenger side), and then lift wiper arms away from windshield (to prevent
glass damage by wiper operation).

NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.

2.

Turn ignition switch OFF.

3.

Turn ignition switch ON, and within 20 seconds, open and close 10 times of front door LH. Then turn igni-
tion switch OFF.

4.

Turn ignition switch ON within 10 seconds after ignition switch OFF. 

5.

When auto active test mode is actuated, horn chirps once. Oil pressure warning lamp starts blinking.

6.

After a series of operations is repeated three times, auto active test is completed.

NOTE:
When auto active test mode has to be cancelled halfway, turn ignition switch OFF.

CAUTION:

Be sure to inspec

BL-45, "Check Door Switch"

  when the auto active test cannot be performed.

INSPECTION IN AUTO ACTIVE TEST MODE

When auto active test mode is actuated, the following eight steps are repeated three times.

NOTE:
Turns ON-OFF the solenoid to switch Hi/Lo. In this case, the bulb does not illuminate.

PKIB6819E

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Concept of Auto Active Test

IPDM E/R actuates auto active test mode when it receives door switch signal from BCM via CAN commu-
nication line. Therefore, when auto active test mode is activated successfully, CAN communication
between IPDM E/R and BCM is normal.

If any of systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed
using auto active test.

Diagnosis chart in auto active test mode

Symptom

Inspection contents

Possible cause

Any of front wipers, tail 
and parking lamps, front 
fog lamps, and head 
lamps (Hi, Lo) do not 
operate.

Perform auto active 
test. Does system in 
question operate?

YES

BCM signal input system malfunction

NO

Lamp/wiper motor malfunction

Lamp/wiper motor ground circuit malfunction

Harness/connector malfunction between IPDM E/R and system in 
question

IPDM E/R (integrated relay) malfunction

Rear window defogger 
does not operate.

Perform auto active 
test. Does rear win-
dow defogger oper-
ate?

YES

BCM signal input circuit malfunction

NO

Rear window defogger relay malfunction

Harness/connector malfunction between IPDM E/R and rear window 
defogger relay

Open circuit of rear window defogger

IPDM E/R malfunction

A/C compressor does 
not operate.

Perform auto active 
test. Does magnetic 
clutch operate?

YES

BCM signal input circuit malfunction

CAN communication signal between BCM and ECM.

CAN communication signal between ECM and IPDM E/R

NO

Magnetic clutch malfunction

Harness/connector malfunction between IPDM E/R and magnetic 
clutch

IPDM E/R (integrated relay) malfunction

Cooling fan does not 
operate.

Perform auto active 
test. Does cooling fan 
operate?

YES

ECM signal input circuit

CAN communication signal between ECM and IPDM E/R

NO

Cooling fan motor malfunction

Harness/connector malfunction between IPDM E/R and cooling fan 
motor

IPDM E/R (integrated relay) malfunction

Oil pressure warning 
lamp does not operate.

Perform auto active 
test. Does oil pres-
sure warning lamp 
blink?

YES

Harness/connector malfunction between IPDM E/R and oil pressure 
switch

Oil pressure switch malfunction

IPDM E/R malfunction

NO

CAN communication signal between BCM and Unified Meter and A/C 
Amp

Combination meter

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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Schematic

AKS00A4F

TKWB0540E

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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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IPDM E/R Terminal Arrangement

AKS00A4G

CKIB0042E

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

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IPDM E/R Power/Ground Circuit Inspection

AKS00A4H

1. 

CHECK FUSE AND FUSIBLE LINK

Make sure the following fusible links or IPDM E/R fuses are not blown.

OK or NG

OK

>> GO TO 2.

NG

>> Replace fuse or fusible link.

2. 

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector E3.

3.

Check voltage between IPDM E/R harness connector E3 termi-
nals 1 (R), 2 (W/L) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace IPDM E/R power supply circuit harness.

3. 

CHECK GROUND CIRCUIT

1.

Disconnect IPDM E/R harness connectors E8 and E9.

2.

Check continuity between IPDM E/R harness connectors E8 ter-
minal 38 (B), E9 terminal 50 (B), 60 (B) and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Replace ground circuit harness of IPDM E/R.

Terminal No.

Power source

Fuse and fusible link No.

1, 2

Battery power

C

E

71

78

1, 2 - Ground

: Battery voltage

PKIB6562E

38, 50, 60 - Ground

: Continuity should exist.

SKIA6184E

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Inspection With CONSULT-II (Self-Diagnosis)

AKS00A4I

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. 

CHECK SELF DIAGNOSTIC RESULT

1.

Connect CONSULT-II and select “IPDM E/R” on  “SELECT SYSTEM” screen.

2.

Select “SELF-DIAG RESULTS” on the “SELECT DIAG MODE” screen.

3.

Check display content in self diagnostic results.

NOTE:

The details for display of the period are as follows:

CRNT: Error currently detected with IPDM E/R.

PAST: Error detected in the past and memorized with IPDM E/R.

Contents displayed

NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED.>>INSPECTION END
CAN COMM CIRC>>After print-out of the monitor items, refer to 

LAN-5, "Precautions When Using CON-

SULT-II"

 .

CONSULT-II display

CONSULT-II 
display code

TIME

Details of diagnosis result

CRNT

PAST

NO DTC IS DETECTED.

FURTHER TESTING MAY BE REQUIRED.

-

-

-

No malfunction

CAN COMM CIRC

U1000

×

×

Any of or several items below have errors.

TRANSMIT DIAG

ECM

BCM/SEC

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

PG-29

C

D

E

F

G

H

I

J

L

M

A

B

PG

Revision: 2005 August

2005 Murano

Removal and Installation of IPDM E/R

AKS00AAF

REMOVAL

1.

Remove IPDM E/R cover A and IPDM E/R cover. 

2.

While spreading pawls on both side of IPDM E/R cover B,
remove  IPDM E/R from IPDM E/R cover B.

3.

Remove harness connector from IPDM E/R.

INSTALLATION

Installation is the revers order of removal.

SKIA4048E

PG-30

GROUND

Revision: 2005 August

2005 Murano

GROUND 

PFP:00011

Ground Distribution 

AKS007HJ

MAIN HARNESS

CKIB0098E

 

 

 

 

 

 

 

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