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)

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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

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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

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GROUND 

PFP:00011

Ground Distribution 

AKS007HJ

MAIN HARNESS

CKIA0276E

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GROUND

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CKIA0277E

GROUND

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CKIA0318E

PG-50

GROUND

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ENGINE ROOM HARNESS 

CKIA0279E

GROUND

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CKIA0280E

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GROUND

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ENGINE CONTROL HARNESS

CKIA0281E

GROUND

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BODY HARNESS

CKIA0282E