Infiniti FX35, FX50 (S51). Manual — part 640
EXHAUST VALVE TIMING CONTROL
EC-101
< SYSTEM DESCRIPTION >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4.
EVAP canister
5.
EVAP control system pressure sen-
sor
: Vehicle front
1.
Fuel level sensor unit and fuel pump
harness connector
2.
Fuel level sensor unit and fuel pump 3.
Fuel pressure regulator
4.
Fuel tank temperature sensor
: Vehicle front
1.
Accelerator pedal position sensor
(Without DCA system)
2.
Accelerator pedal position sensor
(With DCA system)
1.
Stop lamp switch
2.
ASCD brake switch (ASCD models)
ICC brake switch (ICC models)
3.
Brake pedal
4.
ECM
JMBIA1504ZZ
JMBIA1505ZZ
JMBIA1509ZZ
EC-102
< SYSTEM DESCRIPTION >
[VQ35HR]
EXHAUST VALVE TIMING CONTROL
Component Description
INFOID:0000000005236726
1.
ICC steering switch
2.
CANCEL switch
3.
RESUME/ACCELERATE switch
4.
SET/COAST switch
5.
DISTANCE switch
6.
MAIN switch
7.
LDP/DCA switch
1.
ASCD steering switch
2.
CANCEL switch
3.
RESUME/ACCELERATE switch
4.
SET/COAST switch
5.
MAIN switch
1.
Snow mode switch
JSBIA0155ZZ
JSBIA0156ZZ
JMBIA1623ZZ
Component
Reference
Camshaft position sensor
Crankshaft position sensor
Engine oil temperature sensor
Exhaust valve timing control magnet retarder
Exhaust valve timing control position sensor
INTAKE VALVE TIMING CONTROL
EC-103
< SYSTEM DESCRIPTION >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
INTAKE VALVE TIMING CONTROL
System Diagram
INFOID:0000000005236727
System Description
INFOID:0000000005236728
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM via the CAN communication line.
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control sole-
noid valve depending on driving status. This makes it possible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.
JMBIA1532GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor
Engine speed & piston position
Intake valve
timing control
Intake valve timing control
solenoid valve
Camshaft position sensor
Engine oil temperature sensor
Engine oil temperature
Engine coolant temperature sensor
Engine coolant temperature
Unified meter and A/C amp.
Vehicle speed*
JMBIA0060GB
EC-104
< SYSTEM DESCRIPTION >
[VQ35HR]
INTAKE VALVE TIMING CONTROL
Component Parts Location
INFOID:0000000005568467
1.
IPDM E/R
2.
Battery current sensor
3.
Cooling fan relay
4.
Mass air flow sensor (with intake air
temperature sensor) (bank 1)
5.
Refrigerant pressure sensor
6.
Cooling fan motor-2
7.
Intake valve timing control solenoid
valve
8.
Exhaust valve timing control magnet
retarder
9.
Cooling fan control module
10. Cooling fan motor-1
11.
Mass air flow sensor (with intake air
temperature sensor) (bank 2)
12. ICC brake hold relay (ICC models)
13. Ignition coil (with power transistor)
and spark plug (bank 2)
14. Electric throttle control actuator
(bank 2)
15. A/F sensor 1 (bank 2)
16. Fuel injector (bank 2)
17. Camshaft position sensor
18. Engine coolant temperature sensor
19. Knock sensor
20. Exhaust valve timing control position
sensor
21. EVAP canister purge volume control
solenoid valve
22. Fuel injector (bank 1)
23. Ignition coil (with power transistor)
and spark plug (bank 1)
24. EVAP service port
25. A/F sensor 1 (bank 1)
26. Crankshaft position sensor
27. Electric throttle control actuator
(bank 1)
JMBIA1496ZZ
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