Nissan Murano Z50 (2003 year). Manual

LAN-1118

[CAN]

CAN SYSTEM (TYPE 32)

Revision; 2004 April

2003 Murano

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect steering angle sensor connector.

Check resistance between steering angle sensor harness con-
nector M33 terminals 4 (L) and 5 (Y).

OK or NG

>> Replace steering angle sensor.

>> Repair harness between steering angle sensor and data

link connector.

Driver Seat Control Unit Circuit Check

AKS0078X

CHECK CONNECTOR

Turn ignition switch OFF.

Disconnect the negative battery terminal.

Check following terminals and connectors for damage, bend and loose connection (control unit side and
harness side).

●

Driver seat control unit connector

●

Harness connector B301

●

Harness connector B9

OK or NG

>> GO TO 2.

>> Repair terminal or connector.

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect driver seat control unit connector.

Check resistance between driver seat control unit harness con-
nector B303 terminals 3 (L/Y) and 19 (BR/W).

OK or NG

>> Replace driver seat control unit.

>> Repair harness between driver seat control unit and har-

ness connector B4.

AWD Control Unit Circuit Check

AKS0078Y

CHECK CONNECTOR

Turn ignition switch OFF.

Disconnect the negative battery terminal.

Check terminals and connector of AWD control unit for damage, bend and loose connection (control unit
side and harness side).

OK or NG

>> GO TO 2.

>> Repair terminal or connector.

4 (L) - 5 (Y)

: Approx. 54 - 66

Ω

PKIA0819E

3 (L/Y) - 19 (BR/W)

: Approx. 54 - 66

Ω

SKIA5024E

CAN SYSTEM (TYPE 32)

LAN-1119

[CAN]

LAN

Revision; 2004 April

2003 Murano

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect AWD control unit connector.

Check resistance between AWD control unit harness connector
E111 terminals 8 (L) and 16 (Y).

OK or NG

>> Replace AWD control unit.

>> Repair harness between AWD control unit and IPDM E/

ABS Actuator and Electric Unit (Control Unit) Circuit Check

AKS0078Z

CHECK CONNECTOR

Turn ignition switch OFF.

Disconnect the negative battery terminal.

Check terminals and connector of ABS actuator and electric unit (control unit) for damage, bend and loose
connection (control unit side and harness side).

OK or NG

>> GO TO 2.

>> Repair terminal or connector.

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect ABS actuator and electric unit (control unit) connector.

Check resistance between ABS actuator and electric unit (con-
trol unit) harness connector E24 terminals 11 (L) and 15 (Y).

OK or NG

>> Replace ABS actuator and electric unit (control unit).

>> Repair harness between ABS actuator and electric unit

(control unit) and IPDM E/R.

IPDM E/R Circuit Check

AKS00790

CHECK CONNECTOR

Turn ignition switch OFF.

Disconnect the negative battery terminal.

Check terminals and connector of IPDM E/R for damage, bend and loose connection (control module side
and harness side).

OK or NG

>> GO TO 2.

>> Repair terminal or connector.

8 (L) - 16 (Y)

: Approx. 54 - 66

Ω

SKIA5033E

11 (L) - 15 (Y)

: Approx. 54 - 66

Ω

SKIA5019E

LAN-1120

[CAN]

CAN SYSTEM (TYPE 32)

Revision; 2004 April

2003 Murano

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect IPDM E/R connector.

Check resistance between IPDM E/R harness connector E9 ter-
minals 48 (L) and 49 (Y).

OK or NG

>> Replace IPDM E/R.

>> Repair harness between IPDM E/R and ABS actuator

and electric unit (control unit).

CAN Communication Circuit Check

AKS00791

CHECK CONNECTOR

Turn ignition switch OFF.

Disconnect the negative battery terminal.

Check following terminals and connectors for damage, bend and loose connection (control module side,
control unit side, meter side, sensor side and harness side).

●

ECM

●

TCM

●

Low tire pressure warning control unit

●

Display control unit

●

BCM

●

Unified meter and A/C amp.

●

Steering angle sensor

●

Driver seat control unit

●

AWD control unit

●

ABS actuator and electric unit (control unit)

●

IPDM E/R

●

Between ECM and IPDM E/R

●

Between ECM and TCM

●

Between ECM and driver seat control unit

OK or NG

>> GO TO 2.

>> Repair terminal or connector.

48 (L) - 49 (Y)

: Approx. 108 - 132

Ω

LKIA0030E

CAN SYSTEM (TYPE 32)

LAN-1121

[CAN]

LAN

Revision; 2004 April

2003 Murano

CHECK HARNESS FOR SHORT CIRCUIT

Disconnect following connectors.

–

ECM connector

–

Low tire pressure warning control unit connector

–

Harness connector M82

–

Display control unit connector

–

BCM connector

–

Unified meter and A/C amp. connector

–

Steering angle sensor connector

–

Harness connector M9

Check continuity between data link connector M24 terminals 6
(L) and 14 (Y).

OK or NG

>> GO TO 3.

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Harness between data link connector and ECM.

●

Harness between data link connector and low tire
pressure warning control unit.

●

Harness between data link connector and harness connector M82.

●

Harness between data link connector and display control unit.

●

Harness between data link connector and BCM.

●

Harness between data link connector and unified meter and A/C amp.

●

Harness between data link connector and steering angle sensor.

●

Harness between data link connector and harness connector M9.

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between data link connector M24 terminals 6 (L),
14 (Y) and ground.

OK or NG

>> GO TO 4.

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Harness between data link connector and ECM.

●

Harness between data link connector and low tire
pressure warning control unit.

●

Harness between data link connector and harness connector M82.

●

Harness between data link connector and display control unit.

●

Harness between data link connector and BCM.

●

Harness between data link connector and unified meter and A/C amp.

●

Harness between data link connector and steering angle sensor.

●

Harness between data link connector and harness connector M9.

6 (L) - 14 (Y)

: Continuity should not exist.

PKIA2077E

6 (L) - Ground

: Continuity should not exist.

14 (Y) - Ground

: Continuity should not exist.

PKIA2079E

LAN-1122

[CAN]

CAN SYSTEM (TYPE 32)

Revision; 2004 April

2003 Murano

CHECK HARNESS FOR SHORT CIRCUIT

Disconnect TCM connector.

Check continuity between TCM harness connector F103 termi-
nals 5 (L) and 6 (Y).

OK or NG

>> GO TO 5.

>> Repair harness between TCM and harness connector

F102.

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between TCM harness connector F103 terminals 5
(L), 6 (Y) and ground.

OK or NG

>> GO TO 6.

>> Repair harness between TCM and harness connector

F102.

CHECK HARNESS FOR SHORT CIRCUIT

Disconnect harness connector B4 and harness connector B9.

Check continuity between harness connector B4 terminals 3 (L)
and 10 (Y).

OK or NG

>> GO TO 7.

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Repair harness between harness connector B4 and
harness connector B2.

●

Repair harness between harness connector B4 and
harness connector B9.

5 (L) - 6 (Y)

: Continuity should not exist.

PKIA0817E

5 (L) - Ground

: Continuity should not exist.

6 (Y) - Ground

: Continuity should not exist.

SKIA5020E

3 (L) - 10 (Y)

: Continuity should not exist.

SKIA5021E

CAN SYSTEM (TYPE 32)

LAN-1123

[CAN]

LAN

Revision; 2004 April

2003 Murano

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between harness connector B4 terminals 3 (L), 10
(Y) and ground.

OK or NG

>> GO TO 8.

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Repair harness between harness connector B4 and
harness connector B2.

●

Repair harness between harness connector B4 and harness connector B9.

CHECK HARNESS FOR SHORT CIRCUIT

Disconnect driver seat control unit connector.

Check continuity between driver seat control unit harness con-
nector B303 terminals 3 (L/Y) and 19 (BR/W).

OK or NG

>> GO TO 9.

>> Repair harness between driver seat control unit and har-

ness connector B301.

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between driver seat control unit harness connector
B303 terminals 3 (L/Y), 19 (BR/W) and ground.

OK or NG

>> GO TO 10.

>> Repair harness between driver seat control unit and har-

ness connector B301.

3 (L) - Ground

: Continuity should not exist.

10 (Y) - Ground

: Continuity should not exist.

SKIA5022E

3 (L/Y) - 19 (BR/W)

: Continuity should not exist.

SKIA5024E

3 (L/Y) - Ground

: Continuity should not exist.

19 (BR/W) - Ground

: Continuity should not exist.

SKIA5025E

LAN-1124

[CAN]

CAN SYSTEM (TYPE 32)

Revision; 2004 April

2003 Murano

10.

CHECK HARNESS FOR SHORT CIRCUIT

Disconnect AWD control unit connector, ABS actuator and electric unit (control unit) connector and IPDM
E/R connector.

Check continuity between IPDM E/R harness connector E9 ter-
minals 48 (L) and 49 (Y).

OK or NG

>> GO TO 11.

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Harness between IPDM E/R and AWD control unit.

●

Harness between IPDM E/R and ABS actuator and
electric unit (control unit).

●

Harness between IPDM E/R and harness connector E105.

11.

CHECK HARNESS FOR SHORT CIRCUIT

Check continuity between IPDM E/R harness connector E9 termi-
nals 48 (L), 49 (Y) and ground.

OK or NG

>> GO TO 12.

>> Check the following harnesses. If any harness is dam-

aged, repair the harness.

●

Harness between IPDM E/R and AWD control unit.

●

Harness between IPDM E/R and ABS actuator and
electric unit (control unit).

●

Harness between IPDM E/R and harness connector E105.

12.

ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION

Check components inspection. Refer to

LAN-1125, "ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION"

OK or NG

>> Connect all the connectors and diagnose again. Refer to

LAN-1092, "Work Flow"

>> Replace ECM and/or IPDM E/R.

IPDM E/R Ignition Relay Circuit Check

AKS00792

Check the following. If no malfunction is found, replace the IPDM E/R.

●

IPDM E/R power supply circuit. Refer to

PG-45, "IPDM E/R Power/Ground Circuit Inspection"

●

Ignition power supply circuit. Refer to

PG-10, "IGNITION POWER SUPPLY - IGNITION SW. IN “ON”

AND/OR “START”"

48 (L) - 49 (Y)

: Continuity should not exist.

LKIA0030E

48 (L) - Ground

: Continuity should not exist.

49 (Y) - Ground

: Continuity should not exist.

LKIA0036E

CAN SYSTEM (TYPE 32)

LAN-1125

[CAN]

LAN

Revision; 2004 April

2003 Murano

Component Inspection

AKS00793

ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION

●

Remove ECM and IPDM E/R from vehicle.

●

Check resistance between ECM terminals 94 and 86.

●

Check resistance between IPDM E/R terminals 48 and 49.

Unit

Terminal

Resistance value (

Ω

)

(Approx.)

ECM

94 - 86

108 - 132

IPDM E/R

48 - 49

LKIA0037E

LT-6

PRECAUTIONS

Revision; 2004 April

2003 Murano

PRECAUTIONS

PFP:00011

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”

AKS004I3

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.

WARNING:

●

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

●

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

●

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.

General precautions for service operations

AKS004I5

●

Never work with wet hands.

●

Xenon headlamp includes high voltage generating part. Be sure
to disconnect battery negative cable (negative terminal) or
power fuse before removing, installing, or touching the xenon
headlamp (including lamp bulb).

●

Turn the lighting switch OFF before disconnecting and connect-
ing the connector.

●

When turning the xenon headlamp on and while it is illuminated,
never touch the harness, bulb, and socket of the headlamp.

●

When checking the headlamp on/off operation, check it on vehi-
cle and with the power connected to the vehicle-side connector.

●

Do not touch the headlamp bulb glass surface with bare hands or allow oil or grease to get on it. Do not
touch the headlamp bulb just after the headlamp is turned off, because it is very hot.

●

Install the xenon headlamp bulb socket correctly. If it is installed
improperly, high-voltage leak or corona discharge may occur
that can melt the bulb, connector, and housing. Do not illuminate
the xenon headlamp bulb out of the headlamp housing. Doing
so can cause fire and harm your eyes.

●

When the bulb has burned out, wrap it in a thick vinyl bag and
discard. Do not break the bulb.

●

Leaving the bulb removed from the headlamp housing for a long
period of time can deteriorate the performance of the lens and
reflector (dirt, clouding). Always prepare a new bulb and have it
on hand when replacing the bulb.

●

When adjusting the headlamp aiming, turn the aiming adjust-
ment screw only in the tightening direction. (If it is necessary to loosen the screw, first fully loosen the
screw, and then turn it in the tightening direction.)

●

Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.

PKIA0183E

EL-3422D

PRECAUTIONS

LT-7

Revision; 2004 April

2003 Murano

Wiring Diagrams and Trouble Diagnosis

AKS004I6

When you read wiring diagrams, refer to the following:

●

Refer to

GI-14, "How to Read Wiring Diagrams"

in GI section.

●

Refer to

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

for power distribution in PG section.

When you perform trouble diagnosis, refer to the following:

●

Refer to

GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"

in GI section.

●

Refer to

GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident"

in GI section.

Nissan Murano Z50 (2003 year). Manual - part 219