Nissan Murano Z50 (2003 year). Manual — part 199
LAN-798
[CAN]
CAN SYSTEM (TYPE 23)
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 23)
LAN-799
[CAN]
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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-800, "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
AKS0073O
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”
.
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-800
[CAN]
CAN SYSTEM (TYPE 23)
Revision; 2004 April
2003 Murano
Component Inspection
AKS0073P
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 24)
LAN-801
[CAN]
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Revision; 2004 April
2003 Murano
CAN SYSTEM (TYPE 24)
PFP:23710
System Description
AKS0073Q
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
AKS0073R
SKIA5787E
LAN-802
[CAN]
CAN SYSTEM (TYPE 24)
Revision; 2004 April
2003 Murano
Schematic
AKS0073S
TKWA1015E
CAN SYSTEM (TYPE 24)
LAN-803
[CAN]
C
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Revision; 2004 April
2003 Murano
Wiring Diagram - CAN -
AKS0073T
TKWA1016E
LAN-804
[CAN]
CAN SYSTEM (TYPE 24)
Revision; 2004 April
2003 Murano
TKWA1017E
CAN SYSTEM (TYPE 24)
LAN-805
[CAN]
C
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LAN
Revision; 2004 April
2003 Murano
TKWA1018E
LAN-806
[CAN]
CAN SYSTEM (TYPE 24)
Revision; 2004 April
2003 Murano
Work Flow
AKS00C5P
1.
When there are no indications of “TRANSMISSION”, “AIR PRESSURE MONITOR”, “METER A/C AMP”
or “AUTO DRIVE POS.” 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”, “AUTO DRIVE POS.”, “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”, “AUTO DRIVE POS.”, “ALL MODE AWD/4WD” and “ABS” dis-
played 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 navigation system. Refer to
AV-203, "CAN Communication Line
PKIA2093E
PKIA8260E
PKIA8343E
CAN SYSTEM (TYPE 24)
LAN-807
[CAN]
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Revision; 2004 April
2003 Murano
7.
Attach the CAN DIAG SUPPORT MONITOR check sheet onto the check sheet. Refer to
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
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-808
[CAN]
CAN SYSTEM (TYPE 24)
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.
PKIB0938E
CAN SYSTEM (TYPE 24)
LAN-809
[CAN]
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LAN
Revision; 2004 April
2003 Murano
PKIB0899E
LAN-810
[CAN]
CAN SYSTEM (TYPE 24)
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-825, "Circuit Check Between TCM and
PKIB0939E
SKIA5422E
CAN SYSTEM (TYPE 24)
LAN-811
[CAN]
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LAN
Revision; 2004 April
2003 Murano
Case 2
Check harness between data link connector and driver seat control unit. Refer to
Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)"
PKIB0940E
SKIA5423E
LAN-812
[CAN]
CAN SYSTEM (TYPE 24)
Revision; 2004 April
2003 Murano
Case 3
Check harness between driver seat control unit and ABS actuator and electric unit (control unit). Refer to
.
PKIB0941E
SKIA5424E
CAN SYSTEM (TYPE 24)
LAN-813
[CAN]
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LAN
Revision; 2004 April
2003 Murano
Case 4
Check ECM circuit. Refer to
PKIB0942E
SKIA5425E
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