Infiniti EX35. Manual - part 576

EC-46

< FUNCTION DIAGNOSIS >

[VQ35HR]

ELECTRIC IGNITION SYSTEM

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

 : Vehicle front

1.

Accelerator pedal position sensor

2.

ECM

1.

ICC steering switch

2.

CANCEL switch

3.

RESUME/ACCELERATE switch

4.

SET/COAST switch

5.

MAIN switch

6.

DISTANCE switch

7.

LDP switch

JMBIA1182ZZ

JMBIA0015ZZ

JMBIA1308ZZ

ELECTRIC IGNITION SYSTEM

EC-47

< FUNCTION DIAGNOSIS >

[VQ35HR]

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Component Description

INFOID:0000000003133258

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

JMBIA0017ZZ

JMBIA0312ZZ

Component

Reference

Accelerator pedal position sensor

EC-421, "Description"

Camshaft position sensor (PHASE)

EC-256, "Description"

Crankshaft position sensor (POS)

EC-252, "Description"

Engine coolant temperature sensor

EC-172, "Description"

Knock sensor

EC-249, "Description"

Mass air flow sensor

EC-157, "Description"

Throttle position sensor

EC-175, "Description"

EC-48

< FUNCTION DIAGNOSIS >

[VQ35HR]

AIR CONDITIONING CUT CONTROL

AIR CONDITIONING CUT CONTROL

System Diagram

INFOID:0000000003133259

System Description

INFOID:0000000003133260

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.

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

AIR CONDITIONING CUT CONTROL

EC-49

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Component Parts Location

INFOID:0000000003738633

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)

JMBIA0002ZZ