Infiniti G35 (V35) Sedan. Manual - part 486

EC-90

< FUNCTION DIAGNOSIS >

[VQ35HR]

EXHAUST VALVE TIMING CONTROL

 : Vehicle front

1.

Engine coolant temperature sensor

2.

A/F sensor 1 (bank 1)

3.

Crankshaft position sensor (POS)

1.

IPDM E/R

2.

Battery current sensor

3.

Refrigerant pressure sensor

 : Vehicle front

1.

Power steering pressure sensor

2.

Alternator

3.

Engine oil temperature sensor

 : Vehicle front

JMBIA0011ZZ

JMBIA0013ZZ

JMBIA0014ZZ

JMBIA0012ZZ

EXHAUST VALVE TIMING CONTROL

EC-91

< FUNCTION DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

EVAP service port

2.

EVAP canister purge volume control 
solenoid valve

3.

EVAP canister

4.

EVAP canister vent control valve

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

1.

Accelerator pedal position sensor

2.

ECM

1.

ICC steering switch

2.

CANCEL switch

3.

RESUME/ACCELERATE switch

4.

SET/COAST switch

5.

DISTANCE switch

6.

MAIN switch

JMBIA0019ZZ

JMBIA0015ZZ

JMBIA0016ZZ

EC-92

< FUNCTION DIAGNOSIS >

[VQ35HR]

EXHAUST VALVE TIMING CONTROL

Component Description

INFOID:0000000000956510

1.

ASCD steering switch

2.

CANCEL switch

3.

RESUME/ACCELERATE switch

4.

SET/COAST switch

5.

MAIN switch

1.

Stop lamp switch

2.

ASCD brake switch (ASCD models)
ICC brake switch (ICC models)

3.

Brake pedal

4.

ASCD clutch switch (ASCD models)
ICC clutch switch (ICC models)

5.

Clutch pedal

JMBIA0017ZZ

JMBIA0051ZZ

Component

Reference

Camshaft position sensor (PHASE)

EC-258, "Description"

Crankshaft position sensor (POS)

EC-254, "Description"

Engine oil temperature sensor

EC-236, "Description"

Exhaust valve timing control magnet retarder

EC-156, "Description"

Exhaust valve timing control position sensor

EC-346, "Description"

Vehicle speed sensor

EC-328, "Description"

INTAKE VALVE TIMING CONTROL

EC-93

< FUNCTION DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

INTAKE VALVE TIMING CONTROL

System Diagram

INFOID:0000000000956511

System Description

INFOID:0000000000956512

INPUT/OUTPUT SIGNAL CHART

*: This signal is sent to the ECM through CAN communication line

SYSTEM DESCRIPTION

This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control sole-
noid valve depending on driving status. This makes it possible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.

Component Parts Location

INFOID:0000000000956513

JMBIA0060GB

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)

Engine speed and piston position

Intake valve 
timing control

Intake valve timing control 
solenoid valve

Camshaft position sensor (PHASE)

Engine coolant temperature sensor

Engine coolant temperature

Unified meter and A/C amp.

Vehicle speed*