Nissan Frontier D22. Manual - part 392

TROUBLE DIAGNOSIS

EC-671

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

35

G/R

A/T signal No. 3

[Engine is running]

●

Idle speed

Approximately 0 - 1.0V 

39

GY/R

Power steering oil pres-
sure switch

[Engine is running]

●

Steering wheel is being turned

Approximately 0V

[Engine is running]

●

Steering wheel is not being turned

Approximately 5V

42

B/W

Sensor power supply

[Ignition switch: ON]

Approximately 5V

43

BR

Sensor ground

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

44

PU

Camshaft position sen-
sor (Reference signal)

[Engine is running]

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm at 
idle

0.3 - 0.5V

[Engine is running]

●

Engine speed is 2,000 rpm

0.3 - 0.5V

46

G

Fuel level sensor

[Ignition switch: ON]

Approximately 0 - 4.8V
Output voltage varies with fuel 
level.

47

L

Crankshaft position 
sensor (OBD)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm at 
idle

1 - 2V
(AC range)

[Engine is running]

●

Engine speed is 2,000 rpm

3 - 4V
 (AC range)

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEF997U

SEF998U

SEF690W

SEF691W

EC-672

[VG33E]

TROUBLE DIAGNOSIS

49

LG

Camshaft position sen-
sor (Position signal)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm at 
idle

Approximately 2.5V

[Engine is running]

●

Engine speed is 2,000 rpm

Approximately 2.5V

50

B

Heated oxygen sensor 
1 (bank 1)

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm

0 - Approximately 1.0V

51

G

Heated oxygen sensor 
1 (bank 2)

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm

0 - Approximately 1.0V

54

R

Mass air flow sensor

[Engine is running]

●

Warm-up condition

●

Idle speed

1.0 - 1.7V

[Engine is running]

●

Warm-up condition 

●

Engine speed is 2,500 rpm

1.7 - 2.3V

55

G

Mass air flow sensor 
ground

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

56

OR

Heated oxygen sensor 
2 (bank 1)

[Engine is running]

●

Warm-up condition

●

Revving engine from idle to 3,000 rpm quickly 
after the following conditions are met

–

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

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEF999U

SEF001V

SEF002V

SEF002V

TROUBLE DIAGNOSIS

EC-673

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

57

Y

Heated oxygen sensor 
2 (bank 2)

[Engine is running]

●

Warm-up condition

●

Revving engine from idle to 3,000 rpm quickly 
after the following conditions are met

–

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

59

LG/R

Engine coolant temper-
ature sensor

[Engine is running]

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

60

Y/B

Fuel tank temperature 
sensor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with fuel 
temperature

61

PU/R

Intake air temperature 
sensor

[Engine is running]

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

62

Y

EVAP control system 
pressure sensor

[Ignition switch: ON]

1.8 - 4.8V

63

G/OR

EGR temperature sen-
sor

[Engine is running]

●

Warm-up condition

●

Idle speed

Less than 4.5V

[Engine is running]

●

Warm-up condition

●

EGR system is operating

0 - 1.5V

64

W

Knock sensor

[Engine is running]

●

Idle speed

Approximately 2.5V

66

B

Fuel level sensor 
ground

[Engine is running]

●

Idle speed

Approximately 0V

67

B/P

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

68

W/G

A/T signal 

[Engine is running]

●

Idle speed

Approximately 0 - 5.0V

69

LG/R

Data link connector 

[Engine is running]

●

CONSULT-II or GST is disconnected

6 - 10V

72

B/P

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

80

SB

Power supply
(Back-up)

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

EC-674

[VG33E]

TROUBLE DIAGNOSIS

101

OR/L

IACV-AAC valve

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm at 
idle

8 - 11V

[Engine is running]

●

Warm-up condition

●

Engine speed is 3,000 rpm

7 - 10V

102
104
106
109

111
113

W/B
 W/R
W/G
W/L
W/PU
W

Injector No. 1
Injector No. 3
Injector No. 5
Injector No. 2
Injector No. 4
Injector No. 6

[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 is 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

103

G/W

EGRC-solenoid valve

[Engine is running]

●

Warm-up condition

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Revving engine from idle to 3,000 rpm quickly

0 - 1V

108

R/G

EVAP canister vent 
control valve

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

116

B/R

ECM ground

[Engine is running]

●

Idle speed

Engine ground

117

B/P

Current return

[Engine is running]

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

119

BR/Y

Heated oxygen sensor 
1 heater (bank 1)

[Engine is running]

●

Engine speed is below 2,800 rpm

Approximately 0.4V

[Engine is running]

●

Engine speed is above 2,800 rpm

BATTERY VOLTAGE
(11 - 14V)

120

P/B

Vacuum cut valve 
bypass valve

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEF005V

SEF692W

SEF007V

SEF008V