Infiniti G35 (V35) Sedan. Manual - part 475

EC-46

< FUNCTION DIAGNOSIS >

[VQ35HR]

ELECTRIC IGNITION SYSTEM

 : 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

ELECTRIC IGNITION SYSTEM

EC-47

< 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-48

< FUNCTION DIAGNOSIS >

[VQ35HR]

ELECTRIC IGNITION SYSTEM

Component Description

INFOID:0000000000956489

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

Accelerator pedal position sensor

EC-425, "Description"

Camshaft position sensor (PHASE)

EC-258, "Description"

Crankshaft position sensor (POS)

EC-254, "Description"

Engine coolant temperature sensor

EC-174, "Description"

Ignition signal

EC-466, "Description"

Knock sensor

EC-251, "Description"

Mass air flow sensor

EC-159, "Description"

Park/neutral position switch

EC-342, "Description"

Throttle position sensor

EC-177, "Description"

Vehicle speed sensor

EC-328, "Description"

AIR CONDITIONING CUT CONTROL

EC-49

< FUNCTION DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

AIR CONDITIONING CUT CONTROL

System Diagram

INFOID:0000000000956490

System Description

INFOID:0000000000956491

INPUT/OUTPUT SIGNAL CHART

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

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

SYSTEM DESCRIPTION

This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
• When the accelerator pedal is fully depressed.
• When cranking the engine.
• At high engine speeds.
• When the engine coolant temperature becomes excessively high.
• When operating power steering during low engine speed or low vehicle speed.
• When engine speed is excessively low.
• When refrigerant pressure is excessively low or high.

Component Parts Location

INFOID:0000000000956492

JMBIA0073GB

Sensor

Input Signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)

Engine speed*

2

Air conditioner 
cut control

IPDM E/R

↓

A/C relay

↓

Compressor

Engine coolant temperature sensor

Engine coolant temperature

Accelerator pedal position sensor

Accelerator pedal position

Battery

Battery voltage*

2

Refrigerant pressure sensor

Refrigerant pressure

Power steering pressure sensor

Power steering operation

Unified meter and A/C amp.

Air conditioner ON signal*

1

Vehicle speed*

1