Nissan Murano Z50 (2003 year). Manual - part 169

LAN-318

[CAN]

CAN SYSTEM (TYPE 9)

Revision; 2004 April

2003 Murano

Unified Meter and A/C Amp. Circuit Check

AKS006TG

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.

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.

Steering Angle Sensor Circuit Check

AKS006TH

1. 

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect the negative battery terminal.

3.

Check terminals and connector of steering angle sensor for damage, bend and loose connection (sensor
side and harness side).

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect steering angle sensor connector.

2.

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

OK or NG

OK

>> Replace steering angle sensor.

NG

>> Repair harness between steering angle sensor and data

link connector.

1 (L) - 11 (Y) 

: Approx. 54 - 66

Ω

PKIA2078E

4 (L) - 5 (Y)

: Approx. 54 - 66

Ω

PKIA0819E

CAN SYSTEM (TYPE 9)

LAN-319

[CAN]

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ABS Actuator and Electric Unit (Control Unit) Circuit Check

AKS006TI

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

AKS006TJ

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.

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).

11 (L) - 15 (Y) 

: Approx. 54 - 66

Ω

SKIA5019E

48 (L) - 49 (Y) 

: Approx. 108 - 132

Ω

LKIA0030E

LAN-320

[CAN]

CAN SYSTEM (TYPE 9)

Revision; 2004 April

2003 Murano

CAN Communication Circuit Check

AKS006TK

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, sensor side, control unit side and harness side).

●

ECM

●

TCM

●

Display unit

●

BCM

●

Unified meter and A/C amp.

●

Steering angle sensor

●

ABS actuator and electric unit (control unit)

●

IPDM E/R

●

Between ECM and IPDM E/R

●

Between ECM and TCM

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminal or connector.

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

–

Steering angle sensor 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 steering angle sensor.

●

Harness between data link connector and harness connector M9.

6 (L) - 14 (Y) 

: Continuity should not exist.

PKIA2077E

CAN SYSTEM (TYPE 9)

LAN-321

[CAN]

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Revision; 2004 April

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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 steering angle sensor.

●

Harness between data link connector and harness connector M9.

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 (L) - Ground

: Continuity should not exist.

14 (Y) - Ground

: Continuity should not exist.

PKIA2079E

5 (L) - 6 (Y)

: Continuity should not exist.

PKIA0817E

5 (L) - Ground

: Continuity should not exist.

6 (Y) - Ground

: Continuity should not exist.

SKIA5020E

LAN-322

[CAN]

CAN SYSTEM (TYPE 9)

Revision; 2004 April

2003 Murano

6. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect harness connector B4.

2.

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

OK or NG

OK

>> GO TO 7.

NG

>> Repair harness between harness connector B4 and har-

ness connector B2.

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

>> Repair harness between harness connector B4 and har-

ness connector B2.

8. 

CHECK HARNESS FOR SHORT CIRCUIT

1.

Disconnect 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 9.

NG

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

aged, repair the harness.

●

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

●

Harness between IPDM E/R and harness connector
E105.

3 (L) - 10 (Y) 

: Continuity should not exist.

SKIA5021E

3 (L) - Ground

: Continuity should not exist.

10 (Y) - Ground

: Continuity should not exist.

SKIA5022E

48 (L) - 49 (Y) 

: Continuity should not exist.

LKIA0030E

CAN SYSTEM (TYPE 9)

LAN-323

[CAN]

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Revision; 2004 April

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9. 

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 10.

NG

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

aged, repair the harness.

●

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-323, "ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION"

 .

OK or NG

OK

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

LAN-298, "Work Flow"

 .

NG

>> Replace ECM and/or IPDM E/R.

IPDM E/R Ignition Relay Circuit Check

AKS006TL

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

AKS006TM

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.

48 (L) - Ground

: Continuity should not exist.

49 (Y) - Ground

: Continuity should not exist.

LKIA0036E

Unit

Terminal

Resistance value (

Ω

)

(Approx.)

ECM

94 - 86

108 - 132

IPDM E/R

48 - 49

LKIA0037E

LAN-324

[CAN]

CAN SYSTEM (TYPE 10)

Revision; 2004 April

2003 Murano

CAN SYSTEM (TYPE 10)

PFP:23710

System Description

AKS006TN

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

AKS006TO

SKIA5870E

CAN SYSTEM (TYPE 10)

LAN-325

[CAN]

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Schematic

AKS006TP

TKWA0959E

LAN-326

[CAN]

CAN SYSTEM (TYPE 10)

Revision; 2004 April

2003 Murano

Wiring Diagram - CAN -

AKS006TQ

TKWA0960E

CAN SYSTEM (TYPE 10)

LAN-327

[CAN]

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TKWA0961E

LAN-328

[CAN]

CAN SYSTEM (TYPE 10)

Revision; 2004 April

2003 Murano

TKWA0962E

CAN SYSTEM (TYPE 10)

LAN-329

[CAN]

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Work Flow

AKS00C52

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” 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” 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-331, "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-

331, "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 integrated display system. Refer to 

AV-110, "CAN Communication

Line Check"

 .

7.

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

LAN-331, "CHECK SHEET"

.

PKIA2093E

PKIA8260E

PKIA8343E

LAN-330

[CAN]

CAN SYSTEM (TYPE 10)

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 MONITOR
check sheet. Refer to 

LAN-331, "CHECK SHEET"

 .

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

AV-110, "CAN Communication Line Check"

 .

9.

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

LAN-333, "CHECK SHEET

RESULTS (EXAMPLE)"

 .

CAN SYSTEM (TYPE 10)

LAN-331

[CAN]

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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.

PKIB0584E

LAN-332

[CAN]

CAN SYSTEM (TYPE 10)

Revision; 2004 April

2003 Murano

PKIB0437E

CAN SYSTEM (TYPE 10)

LAN-333

[CAN]

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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-346, "Circuit Check Between TCM and

Data Link Connector"

 .

PKIB0585E

SKIA5217E