Infiniti FX35, FX50 (S51). Manual - part 635

COOLING FAN CONTROL

EC-81

< SYSTEM DESCRIPTION >

[VQ35HR]

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1.

Engine coolant temperature sensor

2.

A/F sensor 1 (bank 1)

3.

Crankshaft position sensor

: Vehicle front

1.

IPDM E/R

2.

Battery current sensor

3.

Refrigerant pressure sensor

1.

Power steering pressure sensor

2.

Alternator

3.

Engine oil temperature sensor

: Vehicle front

1.

EVAP service port

2.

EVAP canister purge volume control 
solenoid valve

3.

EVAP canister vent control valve

JMBIA0011ZZ

JMBIA1501ZZ

JMBIA1502ZZ

JMBIA1503ZZ

EC-82

< SYSTEM DESCRIPTION >

[VQ35HR]

COOLING FAN CONTROL

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

COOLING FAN CONTROL

EC-83

< SYSTEM DESCRIPTION >

[VQ35HR]

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Component Description

INFOID:0000000005236718

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

EC-273, "Description"

Crankshaft position sensor

EC-268, "Description"

Cooling fan control module

EC-464, "Description"

Cooling fan motor

EC-464, "Description"

Engine coolant temperature sensor

EC-186, "Description"

Refrigerant pressure sensor

EC-494, "Description"

EC-84

< SYSTEM DESCRIPTION >

[VQ35HR]

EVAPORATIVE EMISSION SYSTEM

EVAPORATIVE EMISSION SYSTEM

System Diagram

INFOID:0000000005236719

System Description

INFOID:0000000005236720

INPUT/OUTPUT SIGNAL CHART

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

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

JMBIA1530GB

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor

Engine speed*

1

 & Piston position

EVAP canister 
purge flow control

EVAP canister purge vol-
ume control solenoid valve

Camshaft position sensor

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Battery

Battery voltage*

1

Throttle position sensor

Throttle position

Accelerator pedal position sensor

Accelerator pedal position

Air fuel ratio (A/F) sensor 1

Density of oxygen in exhaust gas
(Mixture ratio feedback signal)

Fuel tank temperature sensor

Fuel temperature in fuel tank

EVAP control system pressure sensor

Pressure in purge line

Unified meter and A/C amp.

Vehicle speed*

2