Infiniti M35/M45 Y50. Manual — part 411

TROUBLE DIAGNOSIS

EC-117

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

21
22
23
40
41
42

W
R/Y
R/B
V/R
P/L
R/W

Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1
Fuel injector No. 6
Fuel injector No. 4
Fuel injector No. 2

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

24

O

A/F sensor 1 heater
(bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

25

P/B

Heated oxygen sensor 2
heater (bank 1)

[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

0 - 1.0V

[Ignition switch: ON]

●

Engine stopped

[Engine is running]

●

Engine speed: Above 3,600 rpm

BATTERY VOLTAGE
(11 - 14V)

32

R/G

EVAP control system pres-
sure sensor

[Ignition switch: ON]

Approximately 1.8 - 4.8V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB0042E

PBIB0043E

PBIB1584E

EC-118

[VQ35DE]

TROUBLE DIAGNOSIS

33

LG

Camshaft position sensor
(PHASE) (bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle

1.0 - 4.0V

[Engine is running]

●

Engine speed: 2,000 rpm

1.0 - 4.0V

34

Y/G

Intake air temperature sen-
sor

[Engine is running]

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

38

G/R

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)

47

G

Sensor power supply
(Throttle position sensor)

[Ignition switch: ON]

Approximately 5V

48

B/R

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

[Ignition switch: ON]

Approximately 5V

49

BY

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)

PBIB1039E

PBIB1040E

SEC990C

SEC991C

TROUBLE DIAGNOSIS

EC-119

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

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 - 1.9V

55

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

57

GR/L

A/F sensor 1 (bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 2.6V

58

LG/B

Approximately 2.3V

76

W/L

Approximately 3.1V

77

Y

Approximately 2.3V

60
61
62
79
80
81

V/W
P
Y/R
GR/R
GR/B
G/R

Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1
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

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

68

L/Y

Sensor power supply
(Power steering pressure
sensor)

[Ignition switch: ON]

Approximately 5V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB0044E

PBIB0045E

EC-120

[VQ35DE]

TROUBLE DIAGNOSIS

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

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 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

78

B

Sensor ground
(Heated oxygen sensor)

[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

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.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)