Nissan Murano Z50 (2003 year). Manual — part 153
LAN-62
[CAN]
CAN SYSTEM (TYPE 1)
Revision; 2004 April
2003 Murano
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.
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-62, "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
AKS00698
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
AKS00699
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) - 49 (Y)
: Continuity should not exist.
LKIA0030E
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 2)
LAN-63
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Revision; 2004 April
2003 Murano
CAN SYSTEM (TYPE 2)
PFP:23710
System Description
AKS006P9
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
AKS006PA
SKIA5870E
LAN-64
[CAN]
CAN SYSTEM (TYPE 2)
Revision; 2004 April
2003 Murano
Schematic
AKS006PB
TKWA0927E
CAN SYSTEM (TYPE 2)
LAN-65
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Revision; 2004 April
2003 Murano
Wiring Diagram - CAN -
AKS006PC
TKWA0928E
LAN-66
[CAN]
CAN SYSTEM (TYPE 2)
Revision; 2004 April
2003 Murano
TKWA0929E
CAN SYSTEM (TYPE 2)
LAN-67
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Revision; 2004 April
2003 Murano
TKWA0930E
LAN-68
[CAN]
CAN SYSTEM (TYPE 2)
Revision; 2004 April
2003 Murano
Work Flow
AKS00C4U
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
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
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
.
PKIA2093E
PKIA8260E
PKIA8343E
CAN SYSTEM (TYPE 2)
LAN-69
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Revision; 2004 April
2003 Murano
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-70
[CAN]
CAN SYSTEM (TYPE 2)
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.
PKIB0436E
CAN SYSTEM (TYPE 2)
LAN-71
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Revision; 2004 April
2003 Murano
PKIB0437E
LAN-72
[CAN]
CAN SYSTEM (TYPE 2)
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-84, "Circuit Check Between TCM and
PKIB0438E
SKIA5114E
CAN SYSTEM (TYPE 2)
LAN-73
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Revision; 2004 April
2003 Murano
Case 2
Check harness between data link connector and ABS actuator and electric unit (control unit). Refer to
"Circuit Check Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit)"
PKIB0439E
SKIA5115E
LAN-74
[CAN]
CAN SYSTEM (TYPE 2)
Revision; 2004 April
2003 Murano
Case 3
Check ECM circuit. Refer to
PKIB0440E
SKIA5120E
CAN SYSTEM (TYPE 2)
LAN-75
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Revision; 2004 April
2003 Murano
Case 4
Check TCM circuit. Refer to
PKIB0441E
SKIA5121E
LAN-76
[CAN]
CAN SYSTEM (TYPE 2)
Revision; 2004 April
2003 Murano
Case 5
Check low tire pressure warning control unit circuit. Refer to
LAN-86, "Low Tire Pressure Warning Control Unit
PKIB0442E
SKIA5122E
CAN SYSTEM (TYPE 2)
LAN-77
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Revision; 2004 April
2003 Murano
Case 6
Check display unit circuit. Refer to
LAN-87, "Display Unit Circuit Check"
PKIB0443E
SKIA5123E
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