Infiniti FX35, FX50 (S51). Manual — part 783

EXHAUST VALVE TIMING CONTROL

EC-673

< SYSTEM DESCRIPTION >

[VK50VE]

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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-674

< SYSTEM DESCRIPTION >

[VK50VE]

EXHAUST VALVE TIMING CONTROL

Component Description

INFOID:0000000005237200

Component

Reference

Camshaft position sensor

EC-877, "Description"

Crankshaft position sensor

EC-873, "Description"

Engine oil temperature sensor

EC-854, "Description"

Exhaust valve timing control position sensor

EC-975, "Description"

Exhaust valve timing control solenoid valve

EC-769, "Description"

FUEL PUMP CONTROL MODULE

EC-675

< SYSTEM DESCRIPTION >

[VK50VE]

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FUEL PUMP CONTROL MODULE

System Diagram

INFOID:0000000005237201

System Description

INFOID:0000000005237202

INPUT/OUTPUT SIGNAL CHART

*: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTION

The fuel pump control module (FPCM) controls the discharging volume of the fuel pump by the FPCM control
signals (Low/Mid/High) depending on driving conditions.

JMBIA1568GB

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor
Camshaft position sensor

Engine speed*

Fuel pump control

FPCM

↓

Fuel pump

Engine coolant temperature sensor

Engine coolant temperature

Mass air flow sensor

Amount of intake air

Battery

Battery voltage*

Conditions

Amount of fuel flow

Supplied voltage

• For 1 second after turning ignition switch ON
• Engine is running under low load and low speed conditions

Low

Approximately 8.5 V

• Engine cranking
• Engine coolant temperature is below 10

°

C (50

°

F)

• Engine is running under high load and high speed conditions

High

Battery voltage

(11 - 14 V)

Except the above

Mid

Approximately 10 V

EC-676

< SYSTEM DESCRIPTION >

[VK50VE]

FUEL PUMP CONTROL MODULE

Component Parts Location

INFOID:0000000005589026

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