Infiniti FX35 / FX45. Manual — part 338

TROUBLE DIAGNOSIS

EC-113

< SERVICE INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

34

OR

Intake air temperature sen-
sor

[Engine is running]

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

40
41
42

LG
B
P

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)

45

GY

EVAP canister purge volume
control solenoid valve

[Engine is running]
• Idle speed
• Accelerator pedal is not depressed even

slightly, after engine starting

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]
• Engine speed is about 2,000 rpm (More than

100 seconds after starting engine)

BATTERY VOLTAGE

(11 - 14V)

47

L

Sensor power supply (Throt-
tle position sensor)

[Ignition switch: ON]

Approximately 5V

48

LG

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

[Ignition switch: ON]

Approximately 5V

49

PU

Sensor power supply
(Refrigerant pressure sen-
sor)

[Ignition switch: ON]

Approximately 5V

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

TER-

MI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC984C

SEC985C

SEC990C

SEC991C

EC-114

< SERVICE INFORMATION >

[VQ35DE]

TROUBLE DIAGNOSIS

51

L/W

Mass air flow sensor

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

1.0 - 1.2V

[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm

1.6 - 2.0V

55

W/R

Heated oxygen sensor 2
(bank 2)

[Engine is running]
• Revving engine from idle to 3,000 rpm quick-

ly 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

G

A/F sensor 1 (Bank 2)

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

Approximately 2.6V

58

Y

Approximately 2.3V

76

P

Approximately 3.1V

77

BR

Approximately 2.3V

60
61
62

PU
L
Y

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

[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: 2,500 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

BR

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 switch: ON

(Compressor operates)

1.0 - 4.0V

TER-

MI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC986C

SEC987C

TROUBLE DIAGNOSIS

EC-115

< SERVICE INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

73

Y

Engine coolant temperature
sensor

[Engine is running]

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

74

LG/B

Heated oxygen sensor 2
(bank 1)

[Engine is running]
• Revving engine from idle to 3,000 rpm quick-

ly 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/R

Sensor ground
(Heated oxygen sensor)

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

Approximately 0V

79
80
81

SB
GY
OR

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: 2,500 rpm

0.1 - 0.4V

82

B/W

Sensor ground
(APP sensor 1, ASCD steer-
ing switch, ICC steering
switch)

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

Approximately 0V

83

G/OR

Sensor ground
(APP sensor 2)

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

Approximately 0V

85

PU

Data link connector

[Ignition switch: ON]
• CONSULT-III or GST: Disconnected

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

86

P

CAN communication line

—

—

90

L/B

Sensor power supply
(APP sensor 1)

[Ignition switch: ON]

Approximately 5V

91

G

Sensor power supply
(APP sensor 2)

[Ignition switch: ON]

Approximately 5V

94

L

CAN communication line

—

—

98

Y/R

Accelerator pedal position
sensor 2

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released

0.15 - 0.60V

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed

1.95 - 2.40V

TER-

MI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC986C

SEC987C

EC-116

< SERVICE INFORMATION >

[VQ35DE]

TROUBLE DIAGNOSIS

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 3.0V

[Ignition switch: ON]
• DISTANCE switch: Pressed

Approximately 2.2V

99

G/Y

ASCD steering switch
(models with ASCD system)

[Ignition switch: ON]
• ASCD steering switch: OFF

Approximately 4.0V

[Ignition switch: ON]
• MAIN switch: Pressed

Approximately 0V

[Ignition switch: ON]
• CANCEL switch: Pressed

Approximately 1.0V

[Ignition switch: ON]
• RESUME/ACCELERATE switch: Pressed

Approximately 3.0V

[Ignition switch: ON]
• SET/COAST switch: Pressed

Approximately 2.0V

101

P/L

Stop lamp switch

[Ignition switch: OFF]
• Brake pedal: Fully released

Approximately 0V

[Ignition switch: OFF]
• Brake pedal: Slightly depressed

BATTERY VOLTAGE
(11 - 14V)

102

LG/B

PNP switch

[Ignition switch: ON]
• Selector lever: P or N

Approximately 0V

[Ignition switch: ON]
• Except above position

BATTERY VOLTAGE
(11 - 14V)

104

L/OR

Throttle control motor relay

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch: ON]

0 - 1.0V

106

OR

Accelerator pedal position
sensor 1

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released

0.5 - 1.0V

[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed

3.9 - 4.7V

107

PU/W

Fuel tank temperature sen-
sor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature.

108

SB

ICC brake switch
(models with ICC system)
ASCD brake switch
(models with ASCD system)

[Ignition switch: ON]
• Brake pedal: Slightly depressed

Approximately 0V

[Ignition switch: ON]
• Brake pedal: Fully released

BATTERY VOLTAGE
(11 - 14V)

109

W/L

Ignition switch

[Ignition switch: OFF]

0V

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

TER-

MI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)