Infiniti EX35. Manual - part 570

EC-22

< FUNCTION DIAGNOSIS >

[VQ35HR]

ENGINE CONTROL SYSTEM

System Description

INFOID:0000000003133248

ECM performs various controls such as fuel injection control and ignition timing control.

Component Parts Location

INFOID:0000000003133249

22. Exhaust valve timing control position 

sensor

23. Exhaust valve timing control magnet 

retarder

24. A/F sensor 1

25. Heated oxygen sensor 2

26. Knock sensor

27. Crankshaft position sensor (POS)

28. Engine oil temperature sensor

29. Knock sensor

30. Three way catalyst 1

31. Three way catalyst 2

32. Three way catalyst 1

33. Three way catalyst 2

34. Muffler

35. EVAP canister vent control valve

36. EVAP control system pressure sen-

sor

37. EVAP service port

38. EVAP canister purge volume control 

solenoid valve

39. EVAP canister

40. Fuel damper

41. Fuel pump

42. Fuel pressure regulator

43. Fuel level sensor

44. Fuel tank temperature sensor

45. Fuel tank

46. Accelerator pedal position sensor

47. Electric throttle control actuator

48. Throttle position sensor

49. Mass air flow sensor (with intake air 

temperature sensor)

50. Air cleaner

51. Electric throttle control actuator

52. Throttle position sensor

53. Mass air flow sensor (with intake air 

temperature sensor)

54. Air cleaner

JMBIA0002ZZ

ENGINE CONTROL SYSTEM

EC-23

< FUNCTION DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Battery current sensor

2.

IPDM E/R

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 (PHASE)

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 (POS)

27. Electric throttle control actuator 

(bank 1)

1.

Mass air flow sensor (with intake air 
temperature sensor) (bank 1)

2.

Mass air flow sensor (with intake air 
temperature sensor) (bank 2)

1.

Electric throttle control actuator 
(bank 1)

2.

Electric throttle control actuator 
(bank 2)

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EC-24

< FUNCTION DIAGNOSIS >

[VQ35HR]

ENGINE CONTROL SYSTEM

1.

Cooling fan motor-2

2.

Cooling fan control module

3.

Cooling fan motor-1

4.

Cooling fan relay

 : Vehicle front

PBIB1907E

1.

A/F sensor 1 (bank 1)

2.

A/F sensor 1 (bank 2)

 : Vehicle front

1.

A/F sensor 1 (bank 1) harness con-
nector

2.

A/F sensor 1 (bank 2) harness con-
nector

 : Vehicle front

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ENGINE CONTROL SYSTEM

EC-25

< FUNCTION DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Heated oxygen sensor 2 (bank 2)

2.

Heated oxygen sensor 2 (bank 2) 
harness connector

3.

Heated oxygen sensor 2 (bank 1)

4.

Heated oxygen sensor 2 (bank 1) 
harness connector

 : Vehicle front

1.

Exhaust valve timing control position 
sensor (bank 1)

2.

Camshaft position sensor (PHASE) 
(bank 1)

3.

Camshaft position sensor (PHASE) 
(bank 2)

4.

Exhaust valve timing control position 
sensor (bank 2)

1.

Exhaust valve timing control magnet 
retarder (bank 1) harness connector

2.

Intake valve timing control solenoid 
valve (bank 1) harness connector

3.

Intake valve timing control solenoid 
valve (bank 2) harness connector

4.

Exhaust valve timing control magnet 
retarder (bank 2) harness connector

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