Infiniti M35/M45 Y50. Manual - part 587

TROUBLE DIAGNOSIS

EC-821

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

38

G/B

Fuel pump control module 
(FPCM) check

[When cranking engine]

Approximately 0V

[Engine is running]

●

Warm-up condition

●

Idle speed

4 - 6V

39

B/R

Fuel pump control module
(FPCM)

[When cranking engine]

0 - 0.5V

[Engine is running]

●

Warm-up condition

●

Idle speed

8 - 12V

45

V

EVAP canister purge vol-
ume control solenoid valve

[Engine is running]

●

Idle speed

●

Accelerator pedal: Not depressed even 
slightly, after engine starting

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Engine speed: About 2,000 rpm (More than 
100 seconds after starting engine)

BATTERY VOLTAGE

(11 - 14V)

46
60
61
62
65
79
80
81

L/O
V/W
P
Y/R
BR/R
GR/R
GR/B
G/R

Ignition signal No. 7
Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1
Ignition signal No. 8
Ignition signal No. 6
Ignition signal No. 4
Ignition signal No. 2

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm 
at idle

0 - 0.2V

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

0.1 - 0.4V

47

G

Sensor power supply 
(Throttle position sensor)

[Ignition switch: ON]

Approximately 5V

48

BR

Sensor power supply
(EVAP control system pres-
sure sensor)

[Ignition switch: ON]

Approximately 5V

49

B/Y

Sensor power supply
(Refrigerant pressure sen-
sor, Battery current sensor)

[Ignition switch: ON]

Approximately 5V

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC990C

SEC991C

PBIB0044E

PBIB0045E

EC-822

[VK45DE]

TROUBLE DIAGNOSIS

50

W

Throttle position sensor 1

[Ignition switch: ON]

●

Engine: Stopped

●

Selector lever: D

●

Accelerator pedal: Fully released

More than 0.36V

[Ignition switch: ON]

●

Engine: Stopped

●

Selector lever: D

●

Accelerator pedal: Fully depressed

Less than 4.75V

51

W

Mass air flow sensor

[Engine is running]

●

Warm-up condition

●

Idle speed

0.9 - 1.2V

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,500 rpm

1.6 - 0.9V

53

LG

Intake valve timing control 
position sensor (bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

0 - 1.0V

[Engine is running]

●

Engine speed: 2,000 rpm

0 - 1.0V

55

L/R

Heated oxygen sensor 2 
(bank 1)

[Engine is running]

●

Revving engine from idle to 3,000 rpm 
quickly 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

0 - Approximately 1.0V

57

BR/W

A/F sensor 1 (bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 2.6V

58

G/O

Approximately 2.3V

76

G/W

Approximately 3.1V

77

GR

Approximately 2.3V

66

B

Sensor ground
(Throttle position sensor)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

67

B/W

Sensor ground

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB2734E

PBIB2735E

TROUBLE DIAGNOSIS

EC-823

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

68

L/Y

Sensor power supply
(Power steering pressure 
sensor)

[Ignition switch: ON]

Approximately 5V

69

R

Throttle position sensor 2

[Ignition switch: ON]

●

Engine: Stopped

●

Selector lever: D

●

Accelerator pedal: Fully released

Less than 4.75V

[Ignition switch: ON]

●

Engine: Stopped

●

Selector lever: D

●

Accelerator pedal: Fully depressed

More than 0.36V

70

L/R

Refrigerant pressure sensor

[Engine is running]

●

Warm-up condition

●

Both A/C switch and blower fan motor 
switch: ON (Compressor operates)

1.0 - 4.0V

71

L/R

Battery current sensor

[Engine is running]

●

Battery: Fully charged*

●

Idle speed

Approximately 2.6 - 3.5V

72

L

Intake valve timing control 
position sensor (bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

0 - 1.0V

[Engine is running]

●

Engine speed: 2,000rpm

0 - 1.0V

73

Y/B

Engine coolant temperature 
sensor

[Engine is running]

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

74

W

Heated oxygen sensor 2 
(bank 2)

[Engine is running]

●

Revving engine from idle to 3,000 rpm 
quickly 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

0 - Approximately 1.0V

78

B

Sensor ground
(Heated oxygen sensor 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

82

W

Sensor ground
(APP sensor 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB2734E

PBIB2735E

EC-824

[VK45DE]

TROUBLE DIAGNOSIS

83

P

Sensor ground
(APP sensor 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

85

V

Data link connector

[Ignition switch: ON]

●

CONSULT-II or GST: Disconnected

Approximately 5V - Battery volt-
age (11 - 14V)

86

P

CAN communication line

[Ignition switch: ON]

Approximately 1.1 - 2.3V
Output voltage varies with the 
communication status.

90

L

Sensor power supply
(APP sensor 1)

[Ignition switch: ON]

Approximately 5V

91

BR

Sensor power supply
(APP sensor 2)

[Ignition switch: ON]

Approximately 5V

94

L

CAN communication line

[Ignition switch: ON]

Approximately 2.6 - 3.2V
Output voltage varies with the 
communication status.

98

R

Accelerator pedal position 
sensor 2

[Ignition switch: ON]

●

Engine: Stopped

●

Accelerator pedal: Fully released

0.20 - 0.55V

[Ignition switch: ON]

●

Engine: Stopped

●

Accelerator pedal: Fully depressed

1.85 - 2.40V

99

G/Y

ICC steering switch
(models with ICC system)

[Ignition switch: ON]

●

ICC steering switch: OFF

Approximately 4.3V

[Ignition switch: ON]

●

MAIN switch: Pressed

Approximately 0V

[Ignition switch: ON]

●

CANCEL switch: Pressed

Approximately 1.3V

[Ignition switch: ON]

●

RESUME/ACCELERATE switch: Pressed

Approximately 3.7V

[Ignition switch: ON]

●

SET/COAST switch: Pressed

Approximately 3V

[Ignition switch: ON]

●

DISTANCE switch: Pressed

Approximately 2.2V

99

Y

ASCD steering switch
(models with ASCD system)

[Ignition switch: ON]

●

ASCD steering switch: OFF

Approximately 4V

[Ignition switch: ON]

●

MAIN switch: Pressed

Approximately 0V

[Ignition switch: ON]

●

CANCEL switch: Pressed

Approximately 1V

[Ignition switch: ON]

●

RESUME/ACCELERATE switch: Pressed

Approximately 3V

[Ignition switch: ON]

●

SET/COAST switch: Pressed

Approximately 2V

101

V/R

Stop lamp switch

[Ignition switch: OFF]

●

Brake pedal: Fully released

Approximately 0V

[Ignition switch: OFF]

●

Brake pedal: Slightly depressed

BATTERY VOLTAGE
(11 - 14V)

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)