Nissan Frontier D40. Manual - part 428

 

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Nissan Frontier D40. Manual - part 428

 

 

ECM

EC-403

< ECU DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

48

SB

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

[Ignition switch: ON]

Approximately 5V

49

P

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

[Ignition switch: ON]

Approximately 5V

50

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 0.36V

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

Less than 4.75V

51

P

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

1.5 - 1.9V

61
62
80
81

L
Y
GR
G

Ignition signal No. 3
Ignition signal No. 1
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 - 0.1V

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

0 - 0.2V

66

B

Sensor ground
(Throttle position sensor)

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

Approximately 0V

67

B

Sensor ground

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

Approximately 0V

68

G

Sensor power supply
(Power steering pressure 
sensor)

[Ignition switch: ON]

Approximately 5V

69

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 4.75V

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

More than 0.36V

TERMI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB0521E

PBIB0522E

EC-404

< ECU DIAGNOSIS >

[QR25DE]

ECM

70

BR

Refrigerant pressure sensor

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

(Compressor operates)

1.0 - 4.0V

71

R

Battery current sensor

[Engine is running]

• Battery: Fully charged

*1

• Idle speed

Approximately 2.6 - 3.5V

73

Y

Engine coolant temperature 
sensor

[Engine is running]

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

74

W

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 1.0V

78

B

Sensor ground
(Heated oxygen sensor 2)

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

Approximately 0V

82

B

Sensor ground
(Accelerator pedal position 
sensor 1)

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

Approximately 0V

83

B

Sensor ground
(Accelerator pedal position 
sensor 2)

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

Approximately 0V

85

W

DATA link connector

—

—

86

P

CAN communication line

—

—

90

L

Sensor power supply
(Accelerator pedal position 
sensor 1)

[Ignition switch: ON]

Approximately 5V

91

G

Sensor power supply
(Accelerator pedal position 
sensor 2)

[Ignition switch: ON]

Approximately 5V

94

L

CAN communication line

—

—

98

GR

Accelerator pedal position 
sensor 2

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

0.3 - 0.45V

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

Less than 2.4V

99

SB

ASCD steering switch

[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

TERMI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

ECM

EC-405

< ECU DIAGNOSIS >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

101

LG

Stop lamp switch

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

Approximately 0V

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

BATTERY VOLTAGE
(11 - 14V)

102

O

*2

G

*3

PNP signal 

[Ignition switch: ON]
• Shift lever: P or N (A/T), Neutral (M/T)

Approximately 0V

[Ignition switch: ON]
• Shift lever: Except above

BATTERY VOLTAGE
(11 - 14V)

 104

O

Throttle control motor relay

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch: ON]

0 - 1.0V

106

R

Accelerator pedal position 
sensor 1

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

0.6 - 0.95V

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

Less than 4.75V

107

Y

Fuel tank temperature sen-
sor

[Engine is running]

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

108

LG

ASCD brake switch

[Ignition switch: ON]
• Brake pedal: Slightly depressed (A/T)
• Clutch pedal and/or clutch pedal:

Slightly depressed (M/T)

 Approximately 0V

[Ignition switch: ON]
• Brake pedal: Fully released (A/T) 
• Clutch pedal and brake pedal: 

Fully released (M/T)

BATTERY VOLTAGE
(11 - 14V)

109

W/R

Ignition switch

[Ignition switch: OFF]

0V

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

111

BR

ECM relay (Self shut-off)

[Engine is running]
[Ignition switch: OFF]
• For a few seconds after turning ignition 

switch OFF

0 - 1.0V

[Ignition switch: OFF]
• More than a few seconds after turning igni-

tion switch OFF

BATTERY VOLTAGE
(11 - 14V)

113

V

Fuel pump relay

[Ignition switch: ON]
• For 1 second after turning ignition switch 

ON

[Engine is running]

0 - 1.0V

[Ignition switch: ON]
• More than 1 second after turning ignition 

switch ON

BATTERY VOLTAGE
(11 - 14V)

115
116

B
GR

ECM ground

[Engine is running]
• Idle speed

Body ground

117

G

EVAP canister vent control 
valve

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

119

120

R
P

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

121

R/B

Power supply for ECM 
(Back-up)

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

TERMI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

EC-406

< ECU DIAGNOSIS >

[QR25DE]

ECM

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

*1: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to 

PG-4, "How to Handle Battery"

.

*2: M/T models

*3: A/T models

Wiring Diagram

INFOID:0000000005273434

ABBWA0346GB

 

 

 

 

 

 

 

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