Infiniti FX35, FX50 (S51). Manual — part 788
INTAKE VALVE TIMING CONTROL
EC-693
< SYSTEM DESCRIPTION >
[VK50VE]
C
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EC
N
P
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1.
Stop lamp switch
2.
ASCD brake switch (ASCD models)
ICC brake switch (ICC models)
3.
Brake pedal
4.
ECM
1.
ICC steering switch
2.
CANCEL switch
3.
RESUME/ACCELERATE switch
4.
SET/COAST switch
5.
DISTANCE switch
6.
MAIN switch
7.
LDP switch
1.
ASCD steering switch
2.
CANCEL switch
3.
RESUME/ACCELERATE switch
4.
SET/COAST switch
5.
MAIN switch
1.
Snow mode switch
JMBIA1509ZZ
JMBIA1507ZZ
JMBIA1508ZZ
JMBIA1623ZZ
EC-694
< SYSTEM DESCRIPTION >
[VK50VE]
INTAKE VALVE TIMING CONTROL
Component Description
INFOID:0000000005237208
Component
Reference
Camshaft position sensor
Crankshaft position sensor
Engine coolant temperature sensor
Intake valve timing control solenoid valve
VVEL SYSTEM
EC-695
< SYSTEM DESCRIPTION >
[VK50VE]
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EC
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VVEL SYSTEM
System Diagram
INFOID:0000000005237209
System Description
INFOID:0000000005237210
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM via the CAN communication line
SYSTEM DESCRIPTION
VVEL (Variable Valve Event & Lift) is a system that controls valve event and valve lift continuously. Rotational
movement of the drive shaft equipped with eccentric cam is transmitted to output cam via the rocker arm and
two kinds of links to depress the intake valve. ECM decides the target valve lift according to the driving condi-
tion and sends the command signal to the VVEL control module. The VVEL control module controls the rota-
tion of the control shaft using the VVEL actuator motor and changes the movement of the output cam by
JMBIA1569GB
Sensor
Input signal to ECM
ECM function
Actuator
Camshaft position sensor
Crankshaft position sensor
Engine speed and piston position
VVEL control
VVEL control module
↓
VVEL actuator sub assembly
Accelerator pedal position sensor
Accelerator pedal position
VVEL control shaft position sensor
Control shaft actual angle*
1.
VVEL actuator motor
2.
VVEL control shaft position sensor
3.
Ball screw nut
4.
Ball screw shaft
5.
Rocker arm
6.
Link A
7.
Control shaft
8.
Eccentric cam
9.
Drive shaft
10. Valve lifter
11.
Intake valve
12. Link B
13. Output cam
JMBIA0739GB
EC-696
< SYSTEM DESCRIPTION >
[VK50VE]
VVEL SYSTEM
shifting the link supporting point. As a result, valve lift changes continuously to improve engine output and
response.
Component Parts Location
INFOID:0000000005589028
1.
IPDM E/R
2.
VVEL control module
3.
Battery current sensor
4.
VVEL actuator motor relay
5.
Cooling fan relay-1
6.
Cooling fan relay-2
7.
Mass air flow sensor (bank 2)
8.
Refrigerant pressure sensor
9.
Exhaust valve timing control position
sensor (bank 2)
10. Exhaust valve timing control sole-
noid valve (bank 2)
11.
Camshaft position sensor (bank 2)
12. Intake valve timing control solenoid
valve (bank 2)
13. Cooling fan motor-1
14. Cooling fan control module-1
15. Cooling fan motor-2
16. Cooling fan control module-2
17. Intake valve timing control solenoid
valve (bank 1)
18. Camshaft position sensor (bank 1)
19. Exhaust valve timing control sole-
noid valve (bank 1)
20. Exhaust valve timing control position
sensor (bank 1)
21. Mass air flow sensor (with intake air
temperature sensor) (bank 1)
22. ICC brake hold relay (ICC models)
23. Brake booster pressure sensor
24. Ignition coil (with power transistor)
and spark plug (bank 1)
25. VVEL actuator motor (bank 1)
26. VVEL control shaft position sensor
(bank 1)
27. Fuel injector (bank 1)
28. Electric throttle control actuator
(bank 1)
29. A/F sensor 1 (bank 1)
30. Knock sensor (bank 1)
JMBIA1535ZZ
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