Nissan Murano Z51 (2008 year). Manual — part 140
EC-56
< FUNCTION DIAGNOSIS >
[VQ35DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
JMBIA1832GB
1.
A/F sensor 1 (bank 1) harness con-
nector
2.
A/F sensor 1 (bank 1)
3.
A/F sensor 1 (bank 2) harness con-
nector
4.
A/F sensor 1 (bank 2)
: Vehicle front
1.
HO2S2 (bank 1)
2.
HO2S2 (bank 2)
3.
HO2S2 (bank 2) harness connector
4.
HO2S2 (bank 1) harness connector
5.
Power steering pressure sensor
6.
Drive shaft (RH)
: Vehicle front
JMBIA1116ZZ
JMBIA1117ZZ
Revision: 2008 October
2009 Murano
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-57
< FUNCTION DIAGNOSIS >
[VQ35DE]
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1.
Electronic controlled engine mount
control solenoid valve
2.
VIAS control solenoid valve 1
3.
VIAS control solenoid valve 2
4.
EVAP canister purge volume control
solenoid valve
5.
EVAP service port
6.
EVAP control system pressure sen-
sor
7.
EVAP canister vent control valve
8.
EVAP canister
: Vehicle front
1.
Intake valve timing control solenoid
valve (bank 1)
2.
Intake valve timing control solenoid
valve (bank 2)
3.
Data link connector
1.
Stop lamp switch
2.
ASCD brake switch
3.
Accelerator pedal position sensor
JMBIA1111ZZ
JMBIA1118ZZ
JMBIA1119ZZ
JMBIA1120ZZ
Revision: 2008 October
2009 Murano
EC-58
< FUNCTION DIAGNOSIS >
[VQ35DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Component Description
INFOID:0000000003387904
1.
ASCD steering switch
2.
CANSEL switch
3.
RESUME/ACCELERATE switch
4.
SET/COAST switch
5.
MAIN switch
1.
Fuel level sensor unit and fuel pump
harness connector
2.
Fuel level sensor unit and fuel pump 3.
Fuel pressure regulator
: Vehicle front
JMBIA1121ZZ
Component
Reference
ASCD brake switch
ASCD indicator
ASCD steering switch
Electric throttle control actuator
Stop lamp switch
Revision: 2008 October
2009 Murano
CAN COMMUNICATION
EC-59
< FUNCTION DIAGNOSIS >
[VQ35DE]
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CAN COMMUNICATION
System Description
INFOID:0000000003387905
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.
Refer to
LAN-25, "CAN Communication Signal Chart"
, about CAN communication for detail.
Revision: 2008 October
2009 Murano
EC-60
< FUNCTION DIAGNOSIS >
[VQ35DE]
COOLING FAN CONTROL
COOLING FAN CONTROL
System Diagram
INFOID:0000000003387906
System Description
INFOID:0000000003387907
INPUT/OUTPUT SIGNAL CHART
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM via the CAN communication line.
SYSTEM DESCRIPTION
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 4-step control [HIGH/MIDDLE/LOW/OFF].
JMBIA1857GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
1
Piston position
Cooling fan
control
IPDM E/R
↓
Cooling fan relay
↓
Cooling fan motor
Engine coolant temperature sensor
Engine coolant temperature
Refrigerant pressure sensor
Refrigerant pressure
Battery
Battery voltage*
1
Combination meter
Vehicle speed*
2
BCM
Air conditioner ON signal*
2
Revision: 2008 October
2009 Murano
COOLING FAN CONTROL
EC-61
< FUNCTION DIAGNOSIS >
[VQ35DE]
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Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays in the IPDM E/R through CAN communication line.
JMBIA0179GB
Cooling fan speed
Cooling fan relay
1
2
3
Stop (OFF)
OFF
OFF
OFF
Low (LOW)
ON
OFF
OFF
Middle (MID)
OFF
ON
OFF
High (HI)
OFF
ON
ON
Revision: 2008 October
2009 Murano
EC-62
< FUNCTION DIAGNOSIS >
[VQ35DE]
COOLING FAN CONTROL
Component Parts Location
INFOID:0000000003573788
1.
Intake valve timing control solenoid
valve (bank 1)
2.
Intake valve timing control solenoid
valve (bank 2)
3.
Electronic controlled engine mount
control solenoid valve
4.
Fuel injector (bank 2)
5.
A/F sensor 1 (bank 2)
6.
Cooling fan motor-2
7.
Ignition coil (with power transistor)
and spark plug (bank 2)
8.
Camshaft position sensor (PHASE)
(bank 2)
9.
Crankshaft position sensor (POS)
10. Engine coolant temperature sensor
11.
Cooling fan motor-1
12. ECM
13. Refrigerant pressure sensor
14. Battery current sensor
15. IPDM E/R
16. Mass air flow sensor (with intake air
temperature sensor)
17. Electric throttle control actuator
18. EVAP service port
19. Power valve actuator 2
20. EVAP canister purge volume control
solenoid valve
21. Camshaft position sensor (PHASE)
(bank 1)
22. Ignition coil (with power transistor)
and spark plug (bank 1)
23. A/F sensor 1 (bank 1)
24. Fuel injector (bank 1)
25. VIAS control solenoid valve 1 and 2
26. Power valve actuator 1
JMBIA1108ZZ
Revision: 2008 October
2009 Murano
COOLING FAN CONTROL
EC-63
< FUNCTION DIAGNOSIS >
[VQ35DE]
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1.
Mas air flow sensor (with intake air
temperature sensor)
2.
Electric throttle control actuator
: Vehicle front
1.
Ignition coil (with power transistor)
and spark plug (bank 1)
2.
Fuel injector (bank 1)
3.
Fuel injector (bank 2)
4.
Ignition coil (with power transistor)
and spark plug (bank 2)
5.
Knock sensor (bank 2)
6.
Knock sensor (bank 1)
: Vehicle front
1.
Crankshaft position sensor (POS)
2.
Camshaft position sensor (PHASE)
(bank 1)
3.
Camshaft position sensor (PHASE)
(bank 2)
: Vehicle front
JMBIA1109ZZ
JMBIA1110ZZ
JMBIA1114ZZ
Revision: 2008 October
2009 Murano
EC-64
< FUNCTION DIAGNOSIS >
[VQ35DE]
COOLING FAN CONTROL
1.
Cooling fan motor-1
2.
Cooling fan motor-1 harness con-
nector
3.
Cooling fan motor-1 harness con-
nector
4.
Cooling fan motor-2
5.
Engine coolant temperature sensor
: Vehicle front
1.
Refrigerant pressure sensor
2.
Battery current sensor
: Vehicle front
1.
ECM
2.
IPDM E/R
3.
Fuel pump fuse
: Vehicle front
JMBIA1112ZZ
JMBIA1113ZZ
JMBIA1115ZZ
Revision: 2008 October
2009 Murano
COOLING FAN CONTROL
EC-65
< FUNCTION DIAGNOSIS >
[VQ35DE]
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JMBIA1832GB
1.
A/F sensor 1 (bank 1) harness con-
nector
2.
A/F sensor 1 (bank 1)
3.
A/F sensor 1 (bank 2) harness con-
nector
4.
A/F sensor 1 (bank 2)
: Vehicle front
1.
HO2S2 (bank 1)
2.
HO2S2 (bank 2)
3.
HO2S2 (bank 2) harness connector
4.
HO2S2 (bank 1) harness connector
5.
Power steering pressure sensor
6.
Drive shaft (RH)
: Vehicle front
JMBIA1116ZZ
JMBIA1117ZZ
Revision: 2008 October
2009 Murano
EC-66
< FUNCTION DIAGNOSIS >
[VQ35DE]
COOLING FAN CONTROL
1.
Electronic controlled engine mount
control solenoid valve
2.
VIAS control solenoid valve 1
3.
VIAS control solenoid valve 2
4.
EVAP canister purge volume control
solenoid valve
5.
EVAP service port
6.
EVAP control system pressure sen-
sor
7.
EVAP canister vent control valve
8.
EVAP canister
: Vehicle front
1.
Intake valve timing control solenoid
valve (bank 1)
2.
Intake valve timing control solenoid
valve (bank 2)
3.
Data link connector
1.
Stop lamp switch
2.
ASCD brake switch
3.
Accelerator pedal position sensor
JMBIA1111ZZ
JMBIA1118ZZ
JMBIA1119ZZ
JMBIA1120ZZ
Revision: 2008 October
2009 Murano
COOLING FAN CONTROL
EC-67
< FUNCTION DIAGNOSIS >
[VQ35DE]
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Component Description
INFOID:0000000003387909
1.
ASCD steering switch
2.
CANSEL switch
3.
RESUME/ACCELERATE switch
4.
SET/COAST switch
5.
MAIN switch
1.
Fuel level sensor unit and fuel pump
harness connector
2.
Fuel level sensor unit and fuel pump 3.
Fuel pressure regulator
: Vehicle front
JMBIA1121ZZ
Component
Reference
Camshaft position sensor (PHASE)
Cooling fan motor
Crankshaft position sensor (POS)
Engine coolant temperature sensor
Refrigerant pressure sensor
Revision: 2008 October
2009 Murano
EC-68
< FUNCTION DIAGNOSIS >
[VQ35DE]
ELECTRONIC CONTROLLED ENGINE MOUNT
ELECTRONIC CONTROLLED ENGINE MOUNT
System Diagram
INFOID:0000000003387910
System Description
INFOID:0000000003387911
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM via the CAN communication line.
SYSTEM DESCRIPTION
The ECM controls the engine mount operation corresponding to the engine speed. The control system has a
2-step control [Soft/Hard]
ELECTRONIC CONTROLLED ENGINE MOUNT LINE DRAWING
JMBIA1827GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed
Engine mount
control
Electronic controlled en-
gine mount control solenoid
valve
Combination meter
Vehicle speed*
Vehicle condition
Engine mount control
Engine speed: Below 950 rpm
Soft
Engine speed: Above 950 rpm
Hard
Revision: 2008 October
2009 Murano
ELECTRONIC CONTROLLED ENGINE MOUNT
EC-69
< FUNCTION DIAGNOSIS >
[VQ35DE]
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1.
Electronic controlled engine mount
control solenoid valve
2.
Intake manifold collector
: From next figure
JMBIA2161ZZ
Revision: 2008 October
2009 Murano
EC-70
< FUNCTION DIAGNOSIS >
[VQ35DE]
ELECTRONIC CONTROLLED ENGINE MOUNT
NOTE:
Do not use soapy water or any type of solvent while installing vacuum hose.
1.
Front electronic controlled engine mount 2.
Rear electronic controlled engine mount
: To previous figure
JMBIA2072ZZ
Revision: 2008 October
2009 Murano
ELECTRONIC CONTROLLED ENGINE MOUNT
EC-71
< FUNCTION DIAGNOSIS >
[VQ35DE]
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Component Parts Location
INFOID:0000000003573789
1.
Intake valve timing control solenoid
valve (bank 1)
2.
Intake valve timing control solenoid
valve (bank 2)
3.
Electronic controlled engine mount
control solenoid valve
4.
Fuel injector (bank 2)
5.
A/F sensor 1 (bank 2)
6.
Cooling fan motor-2
7.
Ignition coil (with power transistor)
and spark plug (bank 2)
8.
Camshaft position sensor (PHASE)
(bank 2)
9.
Crankshaft position sensor (POS)
10. Engine coolant temperature sensor
11.
Cooling fan motor-1
12. ECM
13. Refrigerant pressure sensor
14. Battery current sensor
15. IPDM E/R
16. Mass air flow sensor (with intake air
temperature sensor)
17. Electric throttle control actuator
18. EVAP service port
19. Power valve actuator 2
20. EVAP canister purge volume control
solenoid valve
21. Camshaft position sensor (PHASE)
(bank 1)
22. Ignition coil (with power transistor)
and spark plug (bank 1)
23. A/F sensor 1 (bank 1)
24. Fuel injector (bank 1)
25. VIAS control solenoid valve 1 and 2
26. Power valve actuator 1
JMBIA1108ZZ
Revision: 2008 October
2009 Murano
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