Nissan Frontier. Manual — part 376

ECM

EC-75

< ECU DIAGNOSIS INFORMATION >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

25

Y

EVAP canister purge volume
control solenoid valve

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

slightly, after engine starting

BATTERY VOLTAGE
(11 - 14 V)

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

100 seconds after starting engine)

Approximately 1 V

29

R

Fuel injector No. 4

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

NOTE:
The pulse cycle changes depending on
rpm at idle.

BATTERY VOLTAGE
(11 - 14 V)

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

BATTERY VOLTAGE
(11 - 14 V)

30

LG

Fuel injector No. 3

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

NOTE:
The pulse cycle changes depending on
rpm at idle.

BATTERY VOLTAGE
(11 - 14 V)

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

BATTERY VOLTAGE
(11 - 14 V)

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB0050E

PBIB2652E

PBIB0529E

PBIB0530E

PBIB0529E

PBIB0530E

EC-76

< ECU DIAGNOSIS INFORMATION >

[QR25DE]

ECM

31

O

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 - 14 V)

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

BATTERY VOLTAGE
(11 - 14 V)

32

SB

Fuel injector No. 1

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

NOTE:
The pulse cycle changes depending on
rpm at idle.

BATTERY VOLTAGE
(11 - 14 V)

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

BATTERY VOLTAGE
(11 - 14 V)

33

GR

Heated oxygen sensor 2

[Engine is running]
• Revving engine from idle up 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 1.0 V

35

W

Sensor ground
(Heated oxygen sensor 2)

—

—

36

B

Sensor ground
(Throttle position sensor)

—

—

37

W

Throttle position sensor 1

[Ignition switch: ON]
• Engine: Stopped
• Shift lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully released

More than 0.36 V

[Ignition switch: ON]
• Engine: Stopped
• Shift lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully depressed

Less than 4.75 V

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB0529E

PBIB0530E

PBIB0529E

PBIB0530E

ECM

EC-77

< ECU DIAGNOSIS INFORMATION >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

38

R

Throttle position sensor 2

[Ignition switch: ON]
• Engine: Stopped
• Shift lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully released

Less than 4.75 V

[Ignition switch: ON]
• Engine: Stopped
• Shift lever: D (A/T) or 1st (M/T)
• Accelerator pedal: Fully depressed

More than 0.36 V

39

BR

Refrigerant pressure sensor

[Engine is running]
• Warm-up condition
• Both A/C switch and blower fan switch: ON

(Compressor operates)

1.0 - 4.0 V

40

LG

Sensor ground
(Refrigerant pressure sen-
sor)

—

—

41

P

Power steering pressure
sensor

[Engine is running]
• Steering wheel: Being turned

0.5 - 4.0 V

[Engine is running]
• Steering wheel: Not being turned

0.4 - 0.8 V

42

G

Battery current sensor

[Engine is running]
• Battery: Fully charged

*1

• Idle speed

Approximately 2.6 - 3.5 V

44

SB

Sensor ground
(Battery current sensor)

—

—

45

V

A/F sensor 1

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

Approximately 3.1 V

46

Y

Engine coolant temperature
sensor

[Engine is running]

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

47

L

Sensor power supply
(Throttle position sensor)

[Ignition switch: ON]

Approximately 5 V

48

R

Sensor ground
(Power steering pressure
sensor)

—

—

49

L

A/F sensor 1

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

Approximately 2.3 V

50

BR

Intake air temperature
sensor

[Engine is running]

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

51

P

Sensor power supply
(Battery current sensor)

[Ignition switch: ON]

Approximately 5 V

52

W

Sensor ground
(Engine coolant temperature
sensor)

—

—

55

G

Sensor power supply
(Power steering pressure
sensor)

[Ignition switch: ON]

Approximately 5 V

56

B

Sensor ground
(Mass air flow sensor/Intake
air temperature sensor)

—

—

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

EC-78

< ECU DIAGNOSIS INFORMATION >

[QR25DE]

ECM

58

P

Mass air flow sensor

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

0.9 - 1.2 V

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

1.5 - 1.9 V

59

R

Sensor power supply
(Camshaft position sensor)

[Ignition switch ON]

Approximately 5 V

60

O

Sensor ground
(Crankshaft position sensor)

—

—

61

W

Knock sensor

[Engine is running]
• Idle speed

Approximately 2.5 V

64

BR

Sensor ground
(Camshaft position sensor)

—

—

65

G

Crankshaft position sensor
(POS)

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

NOTE:
The pulse cycle changes depending on
rpm at idle.

Approximately 3.0 V

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

Approximately 3.0 V

67

Shield

Sensor ground
(Knock sensor)

—

—

69

Y

Camshaft position sensor
(PHASE)

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

NOTE:
The pulse cycle changes depending on
rpm at idle.

1.0 - 4.0 V

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

1.0 - 4.0 V

72

P

Sensor power supply
(Refrigerant pressure sen-
sor)

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

Approximately 0 V

76

R

Sensor power supply
(Crankshaft position sensor)

[Ignition switch ON]

Approximately 5 V

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB0527E

PBIB0528E

PBIB0525E

PBIB0526E