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Nissan Murano Z50 (2003 year). Manual - part 212

LAN-1006

[CAN]

CAN SYSTEM (TYPE 29)

Revision; 2004 April

2003 Murano

CAN Communication Circuit Check

AKS00775

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

●

AWD control unit

●

ABS actuator and electric unit (control unit)

●

IPDM E/R

●

Between ECM and IPDM E/R

●

Between ECM and TCM

OK or NG

>> GO TO 2.

>> Repair terminal or connector.

CAN SYSTEM (TYPE 29)

LAN-1007

[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-1008

[CAN]

CAN SYSTEM (TYPE 29)

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.

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

OK or NG

>> GO TO 7.

>> Repair harness between harness connector B4 and har-

ness connector B2.

CHECK HARNESS FOR SHORT CIRCUIT

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

OK or NG

>> GO TO 8.

>> Repair harness between harness connector B4 and har-

ness connector B2.

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

3 (L) - Ground

: Continuity should not exist.

10 (Y) - Ground

: Continuity should not exist.

SKIA5022E

CAN SYSTEM (TYPE 29)

LAN-1009

[CAN]

LAN

Revision; 2004 April

2003 Murano

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 9.

>> 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.

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 10.

>> 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.

10.

ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION

Check components inspection. Refer to

LAN-1010, "ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION"

OK or NG

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

LAN-981, "Work Flow"

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

IPDM E/R Ignition Relay Circuit Check

AKS00776

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

LAN-1010

[CAN]

CAN SYSTEM (TYPE 29)

Revision; 2004 April

2003 Murano

Component Inspection

AKS00777

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

CAN SYSTEM (TYPE 30)

LAN-1011

[CAN]

LAN

Revision; 2004 April

2003 Murano

CAN SYSTEM (TYPE 30)

PFP:23710

System Description

AKS00778

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. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected 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.

Component Parts and Harness Connector Location

AKS00779

SKIA5858E

LAN-1012

[CAN]

CAN SYSTEM (TYPE 30)

Revision; 2004 April

2003 Murano

Schematic

AKS0077A

TKWA1039E

CAN SYSTEM (TYPE 30)

LAN-1013

[CAN]

LAN

Revision; 2004 April

2003 Murano

Wiring Diagram - CAN -

AKS0077B

TKWA1040E

LAN-1014

[CAN]

CAN SYSTEM (TYPE 30)

Revision; 2004 April

2003 Murano

TKWA1041E

CAN SYSTEM (TYPE 30)

LAN-1015

[CAN]

LAN

Revision; 2004 April

2003 Murano

TKWA1042E

LAN-1016

[CAN]

CAN SYSTEM (TYPE 30)

Revision; 2004 April

2003 Murano

Work Flow

AKS00C5V

When there are no indications of “TRANSMISSION”, “AIR PRESSURE MONITOR”, “BCM”, “METER A/C
AMP” or “AUTO DRIVE POS.” on “SELECT SYSTEM” display of CONSULT-II, print the “SELECT SYS-
TEM”.

Print all the data of “SELF-DIAG RESULTS” for “ENGINE”, “TRANSMISSION”, “AIR PRESSURE MONI-
TOR”, “BCM”, “METER A/C AMP”, “AUTO DRIVE POS.”, “ALL MODE AWD/4WD” and “ABS” displayed
on CONSULT-II.

Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “TRANSMISSION”, “AIR PRESSURE
MONITOR”, “BCM”, “METER A/C AMP”, “AUTO DRIVE POS.”, “ALL MODE AWD/4WD” and “ABS” dis-
played on CONSULT-II.

Attach the printed sheet of “SELECT SYSTEM”, “SELF-DIAG RESULTS” and “CAN DIAG SUPPORT
MNTR” onto the check sheet. Refer to

LAN-1018, "CHECK SHEET"

Based on the indications of “SELECT SYSTEM” and the results of “CAN DIAG SUPPORT MNTR”, put
marks “v” onto the items with “No indication”, “NG”, or “UNKWN” in the check sheet table. Refer to

LAN-

1018, "CHECK SHEET"

NOTE:

●

If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” as “CAN DIAG SUPPORT MNTR” for the diag-
nosed control unit, replace the control unit.

●

The “CAN DIAG SUPPORT MNTR” items, which are not in check sheet table, are not related to diag-
nostic procedure on service manual.
So it is not necessary to check the status of “CAN DIAG SUPPORT MNTR” items which are not indi-
cated in check sheet table.

Check CAN communication line of the integrated display system. Refer to

AV-110, "CAN Communication

Line Check"

PKIA2093E

PKIA8260E

PKIA8343E

CAN SYSTEM (TYPE 30)

LAN-1017

[CAN]