Infiniti G37 Coupe. Manual - part 468

 

  Index      Infiniti     Infiniti G37 Coupe - service repair manual 2008 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  466  467  468  469   ..

 

 

Infiniti G37 Coupe. Manual - part 468

 

 

ELECTRIC IGNITION SYSTEM

EC-53

< FUNCTION DIAGNOSIS >

[VQ37VHR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Park/neutral position switch

EC-361, "Description"

Throttle position sensor

EC-187, "Description"

Vehicle speed sensor

EC-337, "Description"

Component

Reference

EC-54

< FUNCTION DIAGNOSIS >

[VQ37VHR]

AIR CONDITIONING CUT CONTROL

AIR CONDITIONING CUT CONTROL

System Diagram

INFOID:0000000001733939

System Description

INFOID:0000000001733940

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-55

< FUNCTION DIAGNOSIS >

[VQ37VHR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Component Parts Location

INFOID:0000000001910706

1.

Battery current sensor

2.

IPDM E/R

3.

VVEL control module

4.

Cooling fan relay

5.

VVEL actuator motor relay

6.

Mass air flow sensor (with intake air 
temperature sensor) (bank 1)

7.

Refrigerant pressure sensor

8.

Camshaft position sensor (PHASE) 
(bank 1)

9.

Cooling fan motor-2

10. Intake valve timing control solenoid 

valve (bank 1)

11.

Cooling fan control module

12. Cooling fan motor-1

13. Intake valve timing control solenoid 

valve (bank 2)

14. Camshaft position sensor (PHASE) 

(bank 2)

15. Mass air flow sensor (with intake air 

temperature sensor) (bank 2)

16. ICC brake hold relay (ICC models)

17. Brake booster pressure sensor

18. Ignition coil (with power transistor) 

and spark plug (bank 2)

19. Electric throttle control actuator 

(bank 2)

20. A/F sensor 1 (bank 2)

21. Fuel injector (bank 2)

22. VVEL control shaft position sensor 

(bank 2)

23. VVEL actuator motor (bank 2)

24. Manifold absolute pressure (MAP) 

sensor

25. Engine coolant temperature sensor

26. Knock sensor

27. Fuel injector (bank 1)

28. VVEL actuator motor (bank 1)

29. EVAP canister purge volume control 

solenoid valve

30. VVEL control shaft position sensor 

(bank 1)

JMBIA0837ZZ

EC-56

< FUNCTION DIAGNOSIS >

[VQ37VHR]

AIR CONDITIONING CUT CONTROL

31. Ignition coil (with power transistor) 

and spark plug (bank 1)

32. EVAP service port

33. A/F sensor 1 (bank 1)

34. Crankshaft position sensor (POS)

35. Electric throttle control actuator 

(bank 1)

1.

Mass air flow sensor (with intake air 
temperature sensor) (bank 1)

2.

Mass air flow sensor (with intake air 
temperature sensor) (bank 2)

1.

Electric throttle control actuator 
(bank 1)

2.

Electric throttle control actuator 
(bank 2)

 : Vehicle front

1.

Cooling fan motor-2

2.

Cooling fan control module

3.

Cooling fan motor-1

4.

Cooling fan relay

JMBIA0838ZZ

JMBIA0839ZZ

JMBIA0840ZZ

 

 

 

 

 

 

 

Content   ..  466  467  468  469   ..