Nissan Murano Z50 (2003 year). Manual — part 248
PG-38
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision; 2004 April
2003 Murano
Input/output Signal Chart
T: Transmit R: Receive
Signals
ECM
TCM
Low
tire
pres-
sure
warn-
ing
con-
trol
unit
Dis-
play
unit
Dis-
play
con-
trol
unit
BCM
Uni-
fied
meter
and
A/C
amp.
Steer
ing
angle
sen-
sor
Drive
r seat
con-
trol
unit
AWD
con-
trol
unit
ABS
actu-
ator
and
elec-
tric
unit
(con-
trol
unit)
IPDM
E/R
Engine and CVT integrated control
signal
T
R
R
T
Second position signal
R
T
VDC operation signal
R
R
T
Stop lamp switch signal
R
T
R
Key switch signal
T
R
Ignition switch signal
T
R
R
P range signal
T
R
R
Closed throttle position signal
T
R
Wide open throttle position signal
T
R
Second position indicator signal
T
R
R
Engine speed signal
T
R
R
R
R
R
R
Engine status signal
T
R
Engine coolant temperature signal
T
R
Accelerator pedal position signal
T
R
R
R
Fuel consumption monitor signal
T
R
CVT self-diagnosis signal
R
T
Input shaft revolution signal
R
T
R
Output shaft revolution signal
R
T
R
Air conditioner switch signal
R
T
A/C compressor request signal
T
R
A/C compressor feedback signal
T
R
T
Blower fan motor switch signal
R
T
A/C control signal
T
T
R
R
R
T
Cooling fan speed request signal
T
R
Position lights request signal
T
R
R
Low beam request signal
T
R
Low beam status signal
R
T
High beam request signal
T
R
R
High beam status signal
R
T
Front fog lights request signal
T
R
Vehicle speed signal
R
R
R
T
R
R
R
R
T
R
Sleep request 1 signal
T
R
Sleep request 2 signal
T
R
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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Door switch signal
R
T
R
R
T
R
R
R
Turn indicator signal
T
R
Key fob ID signal
T
R
Key fob door unlock signal
T
R
Seat belt buckle switch signal
R
T
Oil pressure switch signal
R
T
T
R
Buzzer output signal
T
R
Fuel level sensor signal
R
T
Fuel level low warning signal
R
R
T
Malfunction indicator signal
T
R
ASCD SET lamp signal
T
R
ASCD CRUISE lamp signal
T
R
Front wiper request signal
T
R
Front wiper stop position signal
R
T
Rear window defogger switch signal
T
R
Rear window defogger control signal
R
R
R
T
Hood switch signal
R
T
Theft warning horn request signal
T
R
Horn chirp signal
T
R
Steering angle sensor signal
T
R
Tire pressure signal
T
R
Tire pressure data signal
T
R
R
CVT position indicator signal
T
R
R
ABS warning lamp signal
R
T
VDC OFF indicator lamp signal
R
T
SLIP indicator lamp signal
R
T
Brake warning lamp signal
R
T
System setting signal
T
T
R
AWD warning lamp signal
R
T
AWD lock indicator lamp signal
R
T
AWD lock switch signal
T
R
Parking brake switch signal
R
T
R
Signals
ECM
TCM
Low
tire
pres-
sure
warn-
ing
con-
trol
unit
Dis-
play
unit
Dis-
play
con-
trol
unit
BCM
Uni-
fied
meter
and
A/C
amp.
Steer
ing
angle
sen-
sor
Drive
r seat
con-
trol
unit
AWD
con-
trol
unit
ABS
actu-
ator
and
elec-
tric
unit
(con-
trol
unit)
IPDM
E/R
PG-40
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision; 2004 April
2003 Murano
Function of Detecting Ignition Relay Malfunction
AKS004CM
●
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 IPDM E/R malfunction.
NOTE:
When the ignition switch is turned ON, the tail lamp is OFF.
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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Auto Active Test
AKS004CN
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 and parking lamps
–
Front fog lamps
–
Headlamps (Hi, Lo)
–
A/C compressor (magnetic clutch)
–
Cooling fan
OPERATION PROCEDURE
1.
Close hood front door RH and 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 ten 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.
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
BL-61, "CHECK DOOR SWITCH (EXCEPT BACK 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:
The vehicle with the xenon headlamp turns ON-OFF the solenoid to switch Hi/Lo. In this case, the bulb
does not illuminate.
SKIA4046E
PG-42
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision; 2004 April
2003 Murano
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
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
NO
●
Rear window defogger relay circuit
●
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
●
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
NO
●
CAN communication signal between IPDM E/R and BCM
●
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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Revision; 2004 April
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Schematic
AKS004CO
TKWA1258E
PG-44
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision; 2004 April
2003 Murano
IPDM E/R Terminal Arrangement
AKS004CP
CKIA0275E
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PG-45
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Revision; 2004 April
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IPDM E/R Power/Ground Circuit Inspection
AKS004CR
1.
FUSE AND FUSIBLE LINK INSPECTION
●
Check that 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.
POWER CIRCUIT INSPECTION
1.
Disconnect IPDM E/R harness connector E3.
2.
Check voltage between IPDM E/R harness connector E3 terminals 1 (R), 2 (B/Y) and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Replace IPDM E/R power circuit harness.
3.
GROUND CIRCUIT INSPECTION
1.
Disconnect IPDM E/R harness connectors E6 and E9.
2.
Check continuity between IPDM E/R harness connectors E6 ter-
minal 14 (B), E9 terminal 45 (B) and ground.
OK or NG
OK
>> Inspection end.
NG
>> Replace ground circuit harness of IPDM E/R.
Terminal No.
Signal name
Fuse, fusible link No.
1, 2
Battery power
F/L–C, F/L–E, Fuse No. 73
–
Ignition power
Fuse No. 80
Battery voltage should exist
SKIA1987E
Continuity should exist
SKIA3144E
PG-46
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision; 2004 April
2003 Murano
Removal and Installation of IPDM E/R
AKS004CS
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
Install in the revers order of removal.
SKIA4048E
GROUND
PG-47
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GROUND
PFP:00011
Ground Distribution
AKS007HJ
MAIN HARNESS
CKIA0276E
PG-48
GROUND
Revision; 2004 April
2003 Murano
CKIA0277E
GROUND
PG-49
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Revision; 2004 April
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CKIA0318E
PG-50
GROUND
Revision; 2004 April
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ENGINE ROOM HARNESS
CKIA0279E
GROUND
PG-51
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B
PG
Revision; 2004 April
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CKIA0280E
PG-52
GROUND
Revision; 2004 April
2003 Murano
ENGINE CONTROL HARNESS
CKIA0281E
GROUND
PG-53
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PG
Revision; 2004 April
2003 Murano
BODY HARNESS
CKIA0282E
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