Infiniti FX35, FX50 (S51). Manual - part 638

EVAPORATIVE EMISSION SYSTEM

EC-93

< SYSTEM DESCRIPTION >

[VQ35HR]

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Component Description

INFOID:0000000005236722

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

A/F sensor 1

EC-200, "Description"

Accelerator pedal position sensor

EC-442, "Description"

Camshaft position sensor

EC-273, "Description"

Crankshaft position sensor

EC-268, "Description"

Engine coolant temperature sensor

EC-186, "Description"

EVAP canister purge volume control solenoid valve

EC-295, "Description"

EVAP control system pressure sensor

EC-311, "Description"

Fuel tank temperature sensor

EC-243, "Description"

EC-94

< SYSTEM DESCRIPTION >

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EVAPORATIVE EMISSION SYSTEM

Mass air flow sensor

EC-168, "Description"

Throttle position sensor

EC-189, "Description"

Component

Reference

EXHAUST VALVE TIMING CONTROL

EC-95

< SYSTEM DESCRIPTION >

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EXHAUST VALVE TIMING CONTROL

System Diagram

INFOID:0000000005236723

System Description

INFOID:0000000005236724

INPUT/OUTPUT SIGNAL CHART

*: This signal is sent to the ECM via the CAN Communication line. 

SYSTEM DESCRIPTION

This mechanism magnetically controls cam phases continuously with the fixed operating angle of the exhaust
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine oil tem-
perature. Then, the ECM sends ON/OFF pulse duty signals to the exhaust valve timing control magnet
retarder depending on driving status. This makes it possible to control the shut/open timing of the exhaust
valve to increase engine torque and output in a range of high engine speed.

JMBIA1531GB

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor

Engine speed & piston position

Exhaust valve 
timing control

Exhaust valve timing con-
trol magnet retarder

Camshaft position sensor

Engine oil temperature sensor

Engine oil temperature

Exhaust valve timing control position sensor

Exhaust valve timing signal

Unified meter and A/C amp.

Vehicle speed

PBIB2765E

EC-96

< SYSTEM DESCRIPTION >

[VQ35HR]

EXHAUST VALVE TIMING CONTROL

Component Parts Location

INFOID:0000000005568466

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