Infiniti G37 Coupe. Manual - part 585

 

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Infiniti G37 Coupe. Manual - part 585

 

 

ECM

EC-521

< ECU DIAGNOSIS >

[VQ37VHR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

30

(Y)

40

(R)

Throttle position sensor 
1 (bank 1)

Input

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully released

More than 0.36V

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully depressed

Less than 4.75V

31

(R)

48

(B)

Throttle position sensor 
1 (bank 2)

Input

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully released

More than 0.36V

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully depressed

Less than 4.75V

33

(SB)

128

(B)

Heated oxygen sensor 2 
heater (bank 2)

Output

[Engine is running]
• Engine speed: Below 3,600 rpm after 

the following conditions are met

- Engine: after warming up
- Keeping the engine speed between 

3,500 and 4,000 rpm for 1 minute and at 
idle for 1 minute under no load

10V

[Ignition switch: ON]
• Engine stopped
[Engine is running]
• Engine speed: Above 3,600 rpm

BATTERY VOLTAGE
(11 - 14V)

34

(B)

40

(R)

Throttle position sensor 
2 (bank 1)

Input

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully released

Less than 4.75V

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully depressed

More than 0.36V

35

(W)

48

(B)

Throttle position sensor 
2 (bank 2)

Input

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully released

Less than 4.75V

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully depressed

More than 0.36V

36

(O)

—

Sensor ground
[Brake booster pressure 
sensor]

—

—

—

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

-–

Signal  name

Input/

Output

JMBIA0037GB

EC-522

< ECU DIAGNOSIS >

[VQ37VHR]

ECM

37

(W)

128

(B)

Crankshaft position sen-
sor (POS)

Input

[Engine is running]
• Warm-up condition
• Idle speed

NOTE:
The pulse cycle changes depending on 
rpm at idle

4.0 - 5.0

[Engine is running]
• Engine speed: 2,000 rpm

4.0 - 5.0

38

(O)

96

(P)

Manifold absolute pres-
sure (MAP) sensor

Input

[Engine is running]
• Warm-up condition
• Idle speed

1.2V

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

1.5V

39

(P)

36

(O)

Brake booster pressure 
sensor

Input

[Engine is running]
• Warm-up condition
• Idle speed
• Brake pedal: Fully released

1.2V

[Engine is running]
• Warm-up condition
• Idle speed
• Brake pedal: Fully depressed

3.0V

40

(R)

—

Sensor ground
[Throttle position sensor 
(bank 1)]

—

—

—

43

(G)

48

(B)

Sensor power supply
[Throttle position sensor 
(bank 2)]

—

[Ignition switch: ON]

5V

44

(L)

40

(R)

Sensor power supply
[Throttle position sensor 
(bank 1)]

—

[Ignition switch: ON]

5V

45

(LG)

36

(O)

Sensor power supply
[Brake booster pressure 
sensor]

—

[Ignition switch: ON]

5V

46

(R)

128

(B)

Sensor power supply
[Crankshaft position 
sensor (POS)]

—

[Ignition switch: ON]

5V

47

(Y)

—

Sensor ground
[Crankshaft position 
sensor (POS)]

—

—

—

48

(B)

—

Sensor ground
[Throttle position sensor 
(bank 2)]

—

—

—

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0041GB

JMBIA0042GB

ECM

EC-523

< ECU DIAGNOSIS >

[VQ37VHR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

49

(GR)

128

(B)

Throttle control motor 
(Close) (bank 2)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: In the middle of re-

leasing operation

0 - 14V

50

(V)

128

(B)

Throttle control motor 
(Open) (bank 2)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully depressed

0 - 14V

[Ignition switch: ON]
• Engine stopped
• Selector lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully released

0 - 14V

52

(R)

128

(B)

Throttle control motor re-
lay power supply (bank 
2)

Input

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

53

(W)

128

(B)

Ignition switch

Input

[Ignition switch: OFF]

0V

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

54

(Y)

—

CAN communication line
[VVEL control module]

Input/

output

—

—

55

(LG)

—

CAN communication line
[VVEL control module]

Input/

output

—

—

57

(L)

128

(B)

A/F sensor 1 (bank 1)

Input

[Ignition switch: ON]

2.2V

59

(O)

128

(B)

Camshaft position sen-
sor (PHASE) (bank 1)

Input

[Engine is running]
• Warm-up condition
• Idle speed

NOTE:
The pulse cycle changes depending on 
rpm at idle

3.0 - 5.0

[Engine is running]
• Engine speed: 2,000 rpm

3.0 - 5.0

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

-–

Signal  name

Input/

Output

JMBIA0033GB

JMBIA0031GB

JMBIA0032GB

JMBIA0045GB

JMBIA0046GB

EC-524

< ECU DIAGNOSIS >

[VQ37VHR]

ECM

60

(G)

128

(B)

Sensor power supply
[Camshaft position sen-
sor (PHASE) (bank 1), 
Manifold absolute pres-
sure (MAP) sensor, Pow-
er steering pressure 
sensor]

—

[Ignition switch: ON]

5V

61

(R)

128

(B)

A/F sensor 1 (bank 1)

Input

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

1.8V
Output voltage varies with air fuel 
ratio.

63

(L)

128

(B)

Camshaft position sen-
sor (PHASE) (bank 2)

Input

[Engine is running]
• Warm-up condition
• Idle speed

NOTE:
The pulse cycle changes depending on 
rpm at idle

3.0 - 5.0

[Engine is running]
• Engine speed: 2,000 rpm

3.0 - 5.0

64

(SB)

128

(B)

Sensor power supply
[Camshaft position sen-
sor (PHASE) (bank 2), 
Battery current sensor]

—

[Ignition switch: ON]

5V

65

(LG)

128

(B)

A/F sensor 1 (bank 2)

Input

[Ignition switch: ON]

2.2V

66

(V)

128

(B)

A/F sensor 1 (bank 2)

Input

[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm

1.8V
Output voltage varies with air fuel 
ratio.

67

(P)

128

(B)

Intake air temperature 
sensor (bank 1)

Input

[Engine is running]

0 - 4.8V
Output voltage varies with intake 
air temperature.

68

(LG)

—

Sensor ground
[Mass air flow sensor 
(bank 1), Intake air tem-
perature sensor (bank 
1)]

—

—

—

69

(W)

128

(B)

Knock sensor (bank 2)

Input

[Engine is running]
• Idle speed

2.5V*

1

71

(Y)

128

(B)

Engine coolant tempera-
ture sensor

Input

[Engine is running]

0 - 4.8V
Output voltage varies with engine 
coolant temperature.

72

(—)

—

Sensor ground
(Knock sensor)

—

—

—

73

(W)

128

(B)

Knock sensor (bank 1)

Input

[Engine is running]
• Idle speed

2.5V*

1

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0045GB

JMBIA0046GB

 

 

 

 

 

 

 

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