Nissan Murano Z50 (2003 year). Manual - part 192

 

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Nissan Murano Z50 (2003 year). Manual - part 192

 

 

LAN-686

[CAN]

CAN SYSTEM (TYPE 20)

Revision; 2004 April

2003 Murano

2. 

CHECK HARNESS FOR OPEN CIRCUIT

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

OK or NG

OK

>> Diagnose again. Refer to 

LAN-664, "Work Flow"

 .

NG

>> Repair harness between data link connector and BCM.

BCM Circuit Check

AKS0071Q

1. 

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect the negative battery terminal.

3.

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

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect BCM connector.

2.

Check resistance between BCM harness connector M37 termi-
nals 70 (L) and 71 (Y).

OK or NG

OK

>> Replace BCM. Refer to 

BCS-36, "Removal and Installa-

tion of BCM"

 .

NG

>> Repair harness between BCM and data link connector.

Unified Meter and A/C Amp. Circuit Check

AKS0071R

1. 

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect the negative battery terminal.

3.

Check terminals and connector of unified meter and A/C amp. for damage, bend and loose connection
(meter side and harness side).

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

6 (L) - 14 (Y) 

: Approx. 54 - 66

PKIA2077E

70 (L) - 71 (Y) 

: Approx. 54 - 66

LKIA0028E

CAN SYSTEM (TYPE 20)

LAN-687

[CAN]

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LAN

Revision; 2004 April

2003 Murano

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect unified meter and A/C amp. connector.

2.

Check resistance between unified meter and A/C amp. harness
connector M49 terminals 1 (L) and 11 (Y).

OK or NG

OK

>> Replace unified meter and A/C amp.

NG

>> Repair harness between unified meter and A/C amp.

and data link connector.

Driver Seat Control Unit Circuit Check

AKS0071S

1. 

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect the negative battery terminal.

3.

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

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect driver seat control unit connector.

2.

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

OK or NG

OK

>> Replace driver seat control unit.

NG

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

ness connector B4.

AWD Control Unit Circuit Check

AKS0071T

1. 

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect the negative battery terminal.

3.

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

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

1 (L) - 11 (Y) 

: Approx. 54 - 66

PKIA2078E

3 (L/Y) - 19 (BR/W) 

: Approx. 54 - 66

SKIA5024E

LAN-688

[CAN]

CAN SYSTEM (TYPE 20)

Revision; 2004 April

2003 Murano

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect AWD control unit connector.

2.

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

OK or NG

OK

>> Replace AWD control unit.

NG

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

R.

ABS Actuator and Electric Unit (Control Unit) Circuit Check

AKS0071U

1. 

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect the negative battery terminal.

3.

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

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

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

2.

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

OK or NG

OK

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

NG

>> Repair harness between ABS actuator and electric unit

(control unit) and IPDM E/R.

IPDM E/R Circuit Check

AKS0071V

1. 

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect the negative battery terminal.

3.

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

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

8 (L) - 16 (Y) 

: Approx. 54 - 66

SKIA5033E

11 (L) - 15 (Y) 

: Approx. 54 - 66

SKIA5019E

CAN SYSTEM (TYPE 20)

LAN-689

[CAN]

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Revision; 2004 April

2003 Murano

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect IPDM E/R connector.

2.

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

OK or NG

OK

>> Replace IPDM E/R.

NG

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

and electric unit (control unit).

CAN Communication Circuit Check

AKS0071W

1. 

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect the negative battery terminal.

3.

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

ECM

TCM

Display unit

BCM

Unified meter and A/C amp.

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

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

48 (L) - 49 (Y) 

: Approx. 108 - 132

LKIA0030E

LAN-690

[CAN]

CAN SYSTEM (TYPE 20)

Revision; 2004 April

2003 Murano

2. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect following connectors.

ECM connector

Harness connector M82

Display unit connector

BCM connector

Unified meter and A/C amp. connector

Harness connector M9

2.

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

OK or NG

OK

>> GO TO 3.

NG

>> 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 harness
connector M82.

Harness between data link connector and display 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 harness connector M9.

3. 

CHECK HARNESS FOR SHORT CIRCUIT

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

OK or NG

OK

>> GO TO 4.

NG

>> 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 harness
connector M82.

Harness between data link connector and display 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 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

CAN SYSTEM (TYPE 20)

LAN-691

[CAN]

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Revision; 2004 April

2003 Murano

4. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect TCM connector.

2.

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

OK or NG

OK

>> GO TO 5.

NG

>> Repair harness between TCM and harness connector

F102.

5. 

CHECK HARNESS FOR SHORT CIRCUIT

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

OK or NG

OK

>> GO TO 6.

NG

>> Repair harness between TCM and harness connector

F102.

6. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect harness connector B4 and harness connector B9.

2.

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

OK or NG

OK

>> GO TO 7.

NG

>> 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

LAN-692

[CAN]

CAN SYSTEM (TYPE 20)

Revision; 2004 April

2003 Murano

7. 

CHECK HARNESS FOR SHORT CIRCUIT

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

OK or NG

OK

>> GO TO 8.

NG

>> 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.

8. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect driver seat control unit connector.

2.

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

OK or NG

OK

>> GO TO 9.

NG

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

ness connector B301.

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.

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

CAN SYSTEM (TYPE 20)

LAN-693

[CAN]

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LAN

Revision; 2004 April

2003 Murano

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-694, "ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION"

 .

OK or NG

OK

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

LAN-664, "Work Flow"

 .

NG

>> Replace ECM and/or IPDM E/R.

IPDM E/R Ignition Relay Circuit Check

AKS0071X

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-694

[CAN]

CAN SYSTEM (TYPE 20)

Revision; 2004 April

2003 Murano

Component Inspection

AKS0071Y

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 (

)

(Approx.)

ECM

94 - 86

108 - 132

IPDM E/R

48 - 49

LKIA0037E

CAN SYSTEM (TYPE 21)

LAN-695

[CAN]

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Revision; 2004 April

2003 Murano

CAN SYSTEM (TYPE 21)

PFP:23710

System Description

AKS0071Z

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

AKS00720

SKIA5859E

LAN-696

[CAN]

CAN SYSTEM (TYPE 21)

Revision; 2004 April

2003 Murano

Schematic

AKS00721

TKWA1003E

CAN SYSTEM (TYPE 21)

LAN-697

[CAN]

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LAN

Revision; 2004 April

2003 Murano

Wiring Diagram - CAN -

AKS00722

TKWA1004E

LAN-698

[CAN]

CAN SYSTEM (TYPE 21)

Revision; 2004 April

2003 Murano

TKWA1005E

CAN SYSTEM (TYPE 21)

LAN-699

[CAN]

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LAN

Revision; 2004 April

2003 Murano

TKWA1006E

LAN-700

[CAN]

CAN SYSTEM (TYPE 21)

Revision; 2004 April

2003 Murano

Work Flow

AKS00C5M

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-702, "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-

702, "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-702,

"CHECK SHEET"

 .

PKIA2093E

PKIA8260E

PKIA8343E

CAN SYSTEM (TYPE 21)

LAN-701

[CAN]

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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-702, "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-704, "CHECK SHEET

RESULTS (EXAMPLE)"

 .

 

 

 

 

 

 

 

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