Infiniti FX35, FX50 (S51). Manual — part 900

ECM

EC-1141

< ECU DIAGNOSIS INFORMATION >

[VK50VE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

51

(O)

128

(B)

Intake valve timing control so-
lenoid valve (bank 1)

Output

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

BATTERY VOLTAGE
(11 - 14 V)

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

7 - 12 V

52

(L)

128

(B)

Intake valve timing control so-
lenoid valve (bank 2)

Output

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

BATTERY VOLTAGE
(11 - 14 V)

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

7 - 12V

53

(BR)

128

(B)

Throttle control motor (bank 1)
(Close)

Output

[Ignition switch: ON]
• Engine: Stopped
• Selector lever: D position
• Accelerator pedal: In the middle of

releasing operation

0 - 14 V

54

(B)

—

ECM ground

—

—

—

55

(P)

128

(B)

Heated oxygen sensor 2 heat-
er (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

10 V

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

BATTERY VOLTAGE
(11 - 14 V)

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

JMBIA0038GB

JMBIA0038GB

JMBIA0033GB

JMBIA0037GB

EC-1142

< ECU DIAGNOSIS INFORMATION >

[VK50VE]

ECM

56

(R)

128

(B)

Heated oxygen sensor 2 heat-
er (bank 1)

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

10 V

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

BATTERY VOLTAGE
(11 - 14 V)

57

(Y)

128

(B)

Exhaust valve timing control
solenoid valve (bank 2)

Output

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

BATTERY VOLTAGE
(11 - 14 V)

[Engine is running]
• Warm-up condition
• Around 2,500 rpm while the engine

speed is rising

7 - 12 V

58

(B)

—

Sensor ground
[Camshaft position sensor
(bank 1)/ Exhaust valve timing
control position sensor (bank
1)]

—

—

—

59

(W)

58

(B)

Camshaft position sensor
(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 V

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

3.0 - 5.0 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

JMBIA0037GB

JMBIA0034GB

JMBIA0045GB

JMBIA0046GB

ECM

EC-1143

< ECU DIAGNOSIS INFORMATION >

[VK50VE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

60

(G)

58

(B)

Exhaust valve timing control
position sensor (bank 1)

Input

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

NOTE:
The pulse cycle changes depending
on rpm at idle

4.0 - 5.0 V

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

4.0 - 5.0 V

61

(G)

128

(B)

Exhaust valve timing control
solenoid valve (bank 1)

Output

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

BATTERY VOLTAGE
(11 - 14 V)

[Engine is running]
• Warm-up condition
• Around 2,500 rpm while the engine

speed is rising

7 - 12 V

62

(O)

—

Sensor ground
[Camshaft position sensor
(bank 2)/ Exhaust valve timing
control position sensor (bank
2)]

—

—

—

63

(BR)

62

(O)

Camshaft position sensor
(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 V

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

3.0 - 5.0 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

JMBIA0043GB

JMBIA0044GB

JMBIA0034GB

JMBIA0045GB

JMBIA0046GB

EC-1144

< ECU DIAGNOSIS INFORMATION >

[VK50VE]

ECM

64

(P)

62

(O)

Exhaust valve timing control
position sensor (bank 2)

Input

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

NOTE:
The pulse cycle changes depending
on rpm at idle

4.0 - 5.0 V

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

4.0 - 5.0 V

65

(LG)

128

(B)

VVEL actuator motor relay
abort signal
(VVEL control module)

Output

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

0 V

66

(GR)

—

Sensor ground
(Power steering pressure sen-
sor/ Refrigerant pressure sen-
sor)

—

—

—

67

(Y)

68

(B)

Crankshaft position sensor

Input

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

NOTE:
The pulse cycle changes depending
on rpm at idle

4.0 - 5.0 V

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

4.0 - 5.0 V

68

(B)

—

Sensor ground
(Crankshaft position sensor)

—

—

—

69

(W)

70

(B)

Manifold absolute pressure
sensor

Input

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

1.2 V

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

1.5 V

70

(B)

—

Sensor ground
[Battery current sensor/ EVAP
control system pressure sen-
sor/ Manifold absolute pres-
sure sensor]

—

—

—

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

JMBIA0043GB

JMBIA0044GB

JMBIA0041GB

JMBIA0042GB