Nissan Murano Z50 (2003 year). Manual - part 210

LAN-974

[CAN]

CAN SYSTEM (TYPE 28)

Revision; 2004 April

2003 Murano

9. 

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

OK

>> GO TO 10.

NG

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

ness connector B301.

10. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

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

2.

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

OK or NG

OK

>> GO TO 11.

NG

>> 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

OK

>> GO TO 12.

NG

>> 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-975, "ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION"

 .

OK or NG

OK

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

LAN-944, "Work Flow"

 .

NG

>> Replace ECM and/or IPDM E/R.

3 (L/Y) - Ground

: Continuity should not exist.

19 (BR/W) - Ground

: Continuity should not exist.

SKIA5025E

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 28)

LAN-975

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IPDM E/R Ignition Relay Circuit Check

AKS0076L

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”"

 .

Component Inspection

AKS0076M

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

LAN-976

[CAN]

CAN SYSTEM (TYPE 29)

Revision; 2004 April

2003 Murano

CAN SYSTEM (TYPE 29)

PFP:23710

System Description

AKS0076N

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

AKS0076O

SKIA5859E

CAN SYSTEM (TYPE 29)

LAN-977

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Schematic

AKS0076P

TKWA1035E

LAN-978

[CAN]

CAN SYSTEM (TYPE 29)

Revision; 2004 April

2003 Murano

Wiring Diagram - CAN -

AKS0076Q

TKWA1036E

CAN SYSTEM (TYPE 29)

LAN-979

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TKWA1037E

LAN-980

[CAN]

CAN SYSTEM (TYPE 29)

Revision; 2004 April

2003 Murano

TKWA1038E

CAN SYSTEM (TYPE 29)

LAN-981

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Work Flow

AKS00C5U

1.

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

2.

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

3.

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

4.

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

LAN-983, "CHECK SHEET"

 .

5.

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-

983, "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.

6.

Check CAN communication line of the navigation system. Refer to 

AV-203, "CAN Communication Line

Check"

 .

7.

Attach the CAN DIAG SUPPORT MONITOR check sheet onto the check sheet. Refer to 

LAN-983,

"CHECK SHEET"

 .

PKIA2093E

PKIA8260E

PKIA8343E

LAN-982

[CAN]

CAN SYSTEM (TYPE 29)

Revision; 2004 April

2003 Murano

8.

Mark the “NG” or “UNKWN” item of the check sheet table with “v” from the result of CAN DIAG SUPPORT
MONITOR check sheet. Refer to 

LAN-983, "CHECK SHEET"

 .

NOTE:
If “NG” is displayed on “CAN COMM” as “CAN DIAG SUPPORT MONITOR” for the diagnosed control
unit, replace the control unit. Refer to 

AV-203, "CAN Communication Line Check"

 .

9.

According to the check sheet results (example), start inspection. Refer to 

LAN-985, "CHECK SHEET

RESULTS (EXAMPLE)"

 .

CAN SYSTEM (TYPE 29)

LAN-983

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CHECK SHEET

NOTE:
If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” or “CAN COMM” for the diagnosed control unit,
replace the control unit.

PKIB1034E

LAN-984

[CAN]

CAN SYSTEM (TYPE 29)

Revision; 2004 April

2003 Murano

PKIB0731E

CAN SYSTEM (TYPE 29)

LAN-985

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CHECK SHEET RESULTS (EXAMPLE)

NOTE:
If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” or “CAN COMM” for the diagnosed control unit,
replace the control unit.

Case 1

Check harness between TCM and data link connector. Refer to 

LAN-999, "Circuit Check Between TCM and

Data Link Connector"

 .

PKIB1035E

SKIA5487E

LAN-986

[CAN]

CAN SYSTEM (TYPE 29)

Revision; 2004 April

2003 Murano

Case 2

Check harness between data link connector and ABS actuator and electric unit (control unit). Refer to 

LAN-

999, "Circuit Check Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit)"

 .

PKIB1036E

SKIA5488E

CAN SYSTEM (TYPE 29)

LAN-987

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Case 3

Check ECM circuit. Refer to 

LAN-1000, "ECM Circuit Check"

 .

PKIB1037E

SKIA5489E

LAN-988

[CAN]

CAN SYSTEM (TYPE 29)

Revision; 2004 April

2003 Murano

Case 4

Check TCM circuit. Refer to 

LAN-1001, "TCM Circuit Check"

 .

PKIB1038E

SKIA5490E

CAN SYSTEM (TYPE 29)

LAN-989

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Case 5

Check low tire pressure warning control unit circuit. Refer to 

LAN-1001, "Low Tire Pressure Warning Control

Unit Circuit Check"

 .

PKIB1039E

SKIA5491E