Nissan Murano Z50 (2004 year). Manual — part 145
CAN SYSTEM (TYPE 4)
LAN-137
[CAN]
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Revision: 2004 November
2004 Murano
Case 15
Check IPDM E/R ignition relay circuit continuously sticks “ON”. Refer to
LAN-147, "IPDM E/R Ignition Relay
Circuit Check Between TCM and Data Link Connector
AKS00AE2
1.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the negative battery terminal.
3.
Disconnect ECM connector and harness connector M82.
4.
Check continuity between harness connector M82 terminals 8
(L), 9 (Y) and data link connector M24 terminals 6 (L), 14 (Y).
OK or NG
OK
>> Connect all the connectors and diagnose again. Refer to
.
NG
>> Repair harness.
Circuit Check Between Data Link Connector and Driver Seat Control Unit
AKS00AE3
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 (connector side and
harness side).
–
Harness connector M9
–
Harness connector B2
OK or NG
OK
>> GO TO 2.
NG
>> Repair terminal or connector.
PKIA8405E
8 (L) - 6 (L)
: Continuity should exist.
9 (Y) - 14 (Y)
: Continuity should exist.
SKIA5014E
LAN-138
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November
2004 Murano
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect harness connector M9.
2.
Check continuity between data link connector M24 terminals 6
(L), 14 (Y) and harness connector M9 terminals 1 (L), 10 (Y).
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness.
3.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect harness connector B4.
2.
Check continuity between harness connector B2 terminals 1 (L),
10 (Y) and harness connector B4 terminals 3 (L), 10 (Y).
OK or NG
OK
>> Connect all the connectors and diagnose again. Refer to
.
NG
>> Repair harness.
Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric
Unit (Control Unit)
AKS00AE4
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 (connector side and
harness side).
–
Harness connector B4
–
Harness connector E105
OK or NG
OK
>> GO TO 2.
NG
>> Repair terminal or connector.
6 (L) - 1 (L)
: Continuity should exist.
14 (Y) - 10 (Y)
: Continuity should exist.
SKIA5015E
1 (L) - 3 (L)
: Continuity should exist.
10 (Y) - 10 (Y)
: Continuity should exist.
SKIA5016E
CAN SYSTEM (TYPE 4)
LAN-139
[CAN]
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Revision: 2004 November
2004 Murano
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect harness connector B2 and harness connector B4.
2.
Check continuity between harness connector B2 terminals 1 (L),
10 (Y) and harness connector B4 terminals 3 (L), 10 (Y).
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness.
3.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect ABS actuator and electric unit (control unit) connector.
2.
Check continuity between harness connector E105 terminals 3
(L), 10 (Y) and ABS actuator and electric unit (control unit) har-
ness connector E24 terminals 11 (L), 15 (Y).
OK or NG
OK
>> Connect all the connectors and diagnose again. Refer to
.
NG
>> Repair harness.
ECM Circuit Check
AKS00AE5
1.
CHECK CONNECTOR
1.
Turn ignition switch OFF.
2.
Disconnect the negative battery terminal.
3.
Check terminals and connector of ECM 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 ECM connector.
2.
Check resistance between ECM harness connector M80 termi-
nals 94 (L) and 86 (Y).
OK or NG
OK
>> Replace ECM.
NG
>> Repair harness between ECM and TCM.
1 (L) - 3 (L)
: Continuity should exist.
10 (Y) - 10 (Y)
: Continuity should exist.
SKIA5016E
3 (L) - 11 (L)
: Continuity should exist.
10 (Y) - 15 (Y)
: Continuity should exist.
SKIA5017E
94 (L) - 86 (Y)
: Approx. 108 - 132
Ω
SKIA6865E
LAN-140
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November
2004 Murano
TCM Circuit Check
AKS00AE6
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
and harness side).
–
TCM connector
–
Harness connector F102
–
Harness connector M82
OK or NG
OK
>> GO TO 2.
NG
>> Repair terminal or connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect TCM connector.
2.
Check resistance between TCM harness connector F103 termi-
nals 5 (L) and 6 (Y).
OK or NG
OK
>> Replace TCM.
NG
>> Repair harness between TCM and ECM.
Display Control Unit Circuit Check
AKS00AE7
1.
CHECK CONNECTOR
1.
Turn ignition switch OFF.
2.
Disconnect the negative battery terminal.
3.
Check terminals and connector of display 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 display control unit connector.
2.
Check resistance between display control unit harness connec-
tor M43 terminals 25 (L) and 26 (Y).
OK or NG
OK
>> Replace display control unit.
NG
>> Repair harness between display control unit and data
link connector.
5 (L) - 6 (Y)
: Approx. 54 - 66
Ω
PKIA0817E
25 (L) - 26 (Y)
: Approx. 54 - 66
Ω
SKIA6884E
CAN SYSTEM (TYPE 4)
LAN-141
[CAN]
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Revision: 2004 November
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Data Link Connector Circuit Check
AKS00AE8
1.
CHECK CONNECTOR
1.
Turn ignition switch OFF.
2.
Disconnect the negative battery terminal.
3.
Check data link connector and terminals for damage, bend and loose connection (connector side and har-
ness side).
OK or NG
OK
>> GO TO 2.
NG
>> Repair terminal or connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
Check resistance between data link connector M24 terminals 6 (L)
and 14 (Y).
OK or NG
OK
.
NG
>> Repair harness between data link connector and BCM.
BCM Circuit Check
AKS00AE9
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 M34 termi-
nals 39 (L) and 40 (Y).
OK or NG
OK
>> Replace BCM. Refer to
BCS-14, "Removal and Installa-
NG
>> Repair harness between BCM and data link connector.
6 (L) - 14 (Y)
: Approx. 54 - 66
Ω
SKIA6868E
39 (L) - 40 (Y)
: Approx. 54 - 66
Ω
SKIA6869E
LAN-142
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November
2004 Murano
Unified Meter and A/C Amp. Circuit Check
AKS00AEA
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.
Driver Seat Control Unit Circuit Check
AKS00AEB
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.
1 (L) - 11 (Y)
: Approx. 54 - 66
Ω
SKIA6871E
3 (L/Y) - 19 (BR/W)
: Approx. 54 - 66
Ω
SKIA5024E
CAN SYSTEM (TYPE 4)
LAN-143
[CAN]
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Revision: 2004 November
2004 Murano
ABS Actuator and Electric Unit (Control Unit) Circuit Check
AKS00AEC
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
AKS00AED
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
SKIA6873E
LAN-144
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November
2004 Murano
CAN Communication Circuit Check
AKS00AEE
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,
control unit side, meter side and harness side).
–
ECM
–
TCM
–
Display control unit
–
BCM
–
Unified meter and A/C amp.
–
Driver seat 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.
2.
CHECK HARNESS FOR SHORT CIRCUIT
1.
Disconnect following connectors.
–
ECM connector
–
Harness connector M82
–
Display control 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 control 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.
SKIA6868E
CAN SYSTEM (TYPE 4)
LAN-145
[CAN]
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Revision: 2004 November
2004 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 control 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.
SKIA6874E
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-146
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November
2004 Murano
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.
●
Harness between harness connector B4 and harness
connector B2
●
Harness between harness connector B4 and harness
connector B9
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.
●
Harness between harness connector B4 and harness
connector B2
●
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.
3 (L) - 10 (Y)
: Continuity should not exist.
SKIA5021E
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
CAN SYSTEM (TYPE 4)
LAN-147
[CAN]
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LAN
Revision: 2004 November
2004 Murano
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.
10.
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 11.
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
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 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-148, "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
AKS00AEF
Check the following. If no malfunction is found, replace the IPDM E/R.
●
IPDM E/R power supply circuit. Refer to
PG-27, "IPDM E/R Power/Ground Circuit Inspection"
●
Ignition power supply circuit. Refer to
PG-10, "IGNITION POWER SUPPLY - IGNITION SW. IN “ON”
.
3 (L/Y) - Ground
: Continuity should not exist.
19 (BR/W) - Ground
: Continuity should not exist.
SKIA5025E
48 (L) - 49 (Y)
: Continuity should not exist.
SKIA6873E
48 (L) - Ground
: Continuity should not exist.
49 (Y) - Ground
: Continuity should not exist.
SKIA6879E
LAN-148
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November
2004 Murano
Component Inspection
AKS00AEG
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 5)
LAN-149
[CAN]
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LAN
Revision: 2004 November
2004 Murano
CAN SYSTEM (TYPE 5)
PFP:23710
System Description
AKS00AEH
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
AKS00AEI
SKIA9964E
LAN-150
[CAN]
CAN SYSTEM (TYPE 5)
Revision: 2004 November
2004 Murano
Schematic
AKS00AEJ
TKWB0021E
CAN SYSTEM (TYPE 5)
LAN-151
[CAN]
C
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LAN
Revision: 2004 November
2004 Murano
Wiring Diagram - CAN -
AKS00AEK
TKWB0022E
LAN-152
[CAN]
CAN SYSTEM (TYPE 5)
Revision: 2004 November
2004 Murano
TKWB0023E
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