Nissan Murano Z50 (2003 year). Manual — part 186
LAN-590
[CAN]
CAN SYSTEM (TYPE 17)
Revision; 2004 April
2003 Murano
ABS Actuator and Electric Unit (Control Unit) Circuit Check
AKS006Y2
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
AKS006Y3
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
CAN SYSTEM (TYPE 17)
LAN-591
[CAN]
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Revision; 2004 April
2003 Murano
CAN Communication Circuit Check
AKS006Y4
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.
●
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
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
–
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.
6 (L) - 14 (Y)
: Continuity should not exist.
PKIA2077E
LAN-592
[CAN]
CAN SYSTEM (TYPE 17)
Revision; 2004 April
2003 Murano
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.
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
CAN SYSTEM (TYPE 17)
LAN-593
[CAN]
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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 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 9.
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.
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
LAN-594
[CAN]
CAN SYSTEM (TYPE 17)
Revision; 2004 April
2003 Murano
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 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-594, "ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION"
OK or NG
OK
>> Connect all the connectors and diagnose again. Refer to
.
NG
>> Replace ECM and/or IPDM E/R.
IPDM E/R Ignition Relay Circuit Check
AKS006Y5
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”
Component Inspection
AKS006Y6
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
CAN SYSTEM (TYPE 18)
LAN-595
[CAN]
C
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LAN
Revision; 2004 April
2003 Murano
CAN SYSTEM (TYPE 18)
PFP:23710
System Description
AKS0070B
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
AKS0070C
SKIA5862E
LAN-596
[CAN]
CAN SYSTEM (TYPE 18)
Revision; 2004 April
2003 Murano
Schematic
AKS0070D
TKWA0991E
CAN SYSTEM (TYPE 18)
LAN-597
[CAN]
C
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LAN
Revision; 2004 April
2003 Murano
Wiring Diagram - CAN -
AKS0070E
TKWA0992E
LAN-598
[CAN]
CAN SYSTEM (TYPE 18)
Revision; 2004 April
2003 Murano
TKWA0993E
CAN SYSTEM (TYPE 18)
LAN-599
[CAN]
C
D
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LAN
Revision; 2004 April
2003 Murano
TKWA0994E
LAN-600
[CAN]
CAN SYSTEM (TYPE 18)
Revision; 2004 April
2003 Murano
Work Flow
AKS00C5J
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
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
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
7.
Attach the CAN DIAG MONITOR check sheet onto the check sheet. Refer to
.
PKIA2093E
PKIA8260E
PKIA8343E
CAN SYSTEM (TYPE 18)
LAN-601
[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 MONITOR
check sheet. Refer to
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-602
[CAN]
CAN SYSTEM (TYPE 18)
Revision; 2004 April
2003 Murano
CHECK SHEET
NOTE:
If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” or “CAN COMM” for the diagnosed control unit,
replace the control unit.
PKIB0730E
CAN SYSTEM (TYPE 18)
LAN-603
[CAN]
C
D
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F
G
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LAN
Revision; 2004 April
2003 Murano
PKIB0731E
LAN-604
[CAN]
CAN SYSTEM (TYPE 18)
Revision; 2004 April
2003 Murano
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-617, "Circuit Check Between TCM and
PKIB0732E
SKIA5347E
CAN SYSTEM (TYPE 18)
LAN-605
[CAN]
C
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LAN
Revision; 2004 April
2003 Murano
Case 2
Check harness between data link connector and ABS actuator and electric unit (control unit). Refer to
617, "Circuit Check Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit)"
PKIB0733E
SKIA5348E
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