Nissan Quest E52. Instruction — part 459
EC-46
< SYSTEM DESCRIPTION >
[VQ35DE]
SYSTEM
*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].
Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays in the IPDM E/R through CAN communication line.
ELECTRONIC CONTROLLED ENGINE MOUNT
ELECTRONIC CONTROLLED ENGINE MOUNT : System Description
INFOID:0000000009650962
SYSTEM DIAGRAM
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
JMBIA1827GB
SYSTEM
EC-47
< SYSTEM DESCRIPTION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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
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
Idle (With vehicle stopped)
Soft
Except above conditions
Hard
JMBIA2161ZZ
EC-48
< SYSTEM DESCRIPTION >
[VQ35DE]
SYSTEM
NOTE:
Do not use soapy water or any type of solvent while installing vacuum hose.
EVAPORATIVE EMISSION SYSTEM
1.
Electronic controlled engine mount
control solenoid valve
2.
Intake manifold collector
: From next figure
1.
Front electronic controlled engine mount 2.
Rear electronic controlled engine mount
: To previous figure
JMBIA2072ZZ
SYSTEM
EC-49
< SYSTEM DESCRIPTION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
EVAPORATIVE EMISSION SYSTEM : System Description
INFOID:0000000009650963
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM via the CAN communication line.
SYSTEM DESCRIPTION
JMBIA1828GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*
1
Piston position
EVAP canister
purge flow control
EVAP canister purge vol-
ume control solenoid valve
Camshaft position sensor (PHASE)
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor
Engine coolant temperature
Air fuel ratio (A/F) sensor 1
Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Throttle position sensor
Throttle position
Accelerator pedal position sensor
Accelerator pedal position
Battery
Battery voltage*
1
Combination meter
Vehicle speed*
2
PBIB1631E
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