Nissan Murano Z50 (2006 year). Manual — part 175
POWER SUPPLY ROUTING CIRCUIT
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TKWB0539E
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POWER SUPPLY ROUTING CIRCUIT
Revision: 2006 August
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TKWB2689E
POWER SUPPLY ROUTING CIRCUIT
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TKWA1753E
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POWER SUPPLY ROUTING CIRCUIT
Revision: 2006 August
2006 Murano
Fuse
NKS0025C
●
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
NKS0025D
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
NKS0025E
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
CKIB0293E
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
NKS0025F
●
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
IPDM E/R receives a request signal from each control unit with CAN communication. It controls each system.
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:
Control system
Transmit control unit
Control part
Lamp control
BCM
●
Head lamps (HI, LO)
●
Front fog lamps
●
Parking, license plate, side marker and tail lamps
Wiper control
BCM
Front wipers
Rear window defogger control
BCM
Rear window defogger
A/C compressor control
ECM
A/C compressor (magnet clutch)
Cooling fan control
ECM
Cooling fan
Horn control
BCM
Horn
Controlled system
Fail-safe mode
Headlamp
●
With the ignition switch ON, the headlamp (LO) is ON.
●
With the ignition switch OFF, the headlamp (LO) is OFF.
Parking, license plate, side marker
and tail lamps
●
With the ignition switch ON, the parking, license plate, side marker and tail lamps are ON.
●
With the ignition switch OFF, the parking, license plate, side marker and tail lamps are 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
PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 August
2006 Murano
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
NKS0025G
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
NKS0025H
Refer to
LAN-32, "CAN Communication Unit"
Function of Detecting Ignition Relay Malfunction
NKS0025I
●
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)
NKS0025J
CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.
CONSULT-II INSPECTION PROCEDURE
Refer to
GI-38, "CONSULT-II Start Procedure"
.
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.
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”.
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.
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
ALL SIGNALS
All items will be monitored.
MAIN SIGNALS
Monitor the predetermined item.
SELECTION FROM MENU
Select any item for monitoring.
PG-20
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 August
2006 Murano
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.
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/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
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
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:
Headlamp washer item is displayed, but cannot be tested.
Auto Active Test
NKS0025K
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
●
Parking lamps, license plate lamps, tail lamps and side marker 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 inspect
when the auto active test cannot be performed.
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.
PG-22
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 August
2006 Murano
INSPECTION IN AUTO ACTIVE TEST MODE
When auto active test mode is actuated, the following eight steps are repeated three times.
(A): Oil pressure warning lamp is blinking when the auto active test operating.
Operation steps
NOTE:
Turns ON-OFF the solenoid to switch HI/LO. In this case, the bulb does not illuminate.
SKIB7835E
Test item
Operation time/ frequency
1
Rear window defogger
10 seconds
2
Front wiper
LO 5 seconds
→
HI 5 seconds
3
Parking lamps, license plate lamps, tail lamps and side marker lamps
10 seconds
4
Front fog lamps
10 seconds
5
Headlamp (LO)
10 seconds
6
Headlamp (HI)
NOTE
ON
⇔
OFF 5 times
7
A/C compressor (magnetic clutch)
ON
⇔
OFF 5 times
8
Cooling fan
LO 5 seconds
→
HI 5 seconds
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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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
PG-24
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 August
2006 Murano
Schematic
NKS0025L
TKWB2690E
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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IPDM E/R Terminal Arrangement
NKS0025M
CKIB0042E
PG-26
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 August
2006 Murano
IPDM E/R Power/Ground Circuit Inspection
NKS0025N
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, 2 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
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, E9 terminal 50, 60 and ground.
OK or NG
OK
>> INSPECTION END
NG
>> Repair harness or connector.
Terminal No.
Power source
Fuse and fusible link No.
1
Battery power
E
2
C
—
71
78
1, 2 - Ground
: Battery voltage
PKIB6562E
38, 50, 60 - Ground
: Continuity should exist.
SKIA6184E
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PG-27
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Inspection with CONSULT-II (Self-Diagnosis)
NKS0025O
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-3, "Precautions When Using CON-
.
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
PG-28
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: 2006 August
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Removal and Installation of IPDM E/R
NKS0025P
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
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