Nissan Qashqai (2007-2010). Manual — part 270

ECM

EC-599

< ECU DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

TERMINAL LAYOUT

PHYSICAL VALUES

NOTE:
• ECM is located in the engine room left side near battery.
• Specification data are reference values and are measured between each terminal and ground.
• Pulse signal is measured by CONSULT-III.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.

PBIA9221J

Terminal No.

Wire

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

1

Ground

L/W

Throttle control motor
(Open)

Output

[Ignition switch: ON]
• Engine stopped
• Shift lever: 1st
• Accelerator pedal: Fully de-

pressed

3.2V

2

Ground

R/Y

Throttle control motor relay
power supply

Input

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

3

Ground

LG/R

Heated oxygen sensor 1
heater

Output

[Engine is running]
• Warm up condition
• Engine speed: Below 3,600

rpm

Approximately 3.2V

[Engine is running]
• Warm-up condition
• Idle speed
[Engine is running]
• Engine speed: Above 3,600

rpm

BATTERY VOLTAGE (11 - 14V)

4

Ground

P

Throttle control motor
(Close)

Output

[Ignition switch: ON]
• Engine stopped
• Shift lever: 1st
• Accelerator pedal: Fully re-

leased

0 - 14V

PBIA8150J

PBIA8148J

PBIA8149J

EC-600

< ECU DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

ECM

5

Ground

R

Heated oxygen sensor 2
heater

Output

[Engine is running]
• Engine speed: Below 3,900

rpm after the following con-
ditions 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

10V

[Ignition switch: ON]
• Engine stopped
[Engine is running]
• Engine speed: Above 3,900

rpm

BATTERY VOLTAGE
(11 - 14V)

9

Ground

W/B

EVAP canister purge volume
control solenoid valve

Output

[Engine is running]
• Idle speed

BATTERY VOLTAGE

(11 - 14V)

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

rpm (More than 100 sec-
onds after starting engine.)

BATTERY VOLTAGE

(11 - 14V)

10

11

Ground

B

B/W

ECM ground

—

[Engine is running]
• Idle speed

Body ground

15

Ground

G/L

Throttle control motor relay

Output

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch: ON]

0 - 1.0V

17
18
21
22

Ground

L/Y

BR/Y

R/G

SB

Ignition signal No. 1
Ignition signal No. 2
Ignition signal No. 4
Ignition signal No. 3

Output

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

NOTE:
The pulse cycle changes de-
pending on rpm at idle

0 - 0.3V

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

0.2 - 0.5V

Terminal No.

Wire

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

PBIA8148J

PBIB0050E

PBIB0520E

PBIA9265J

PBIA9266J

ECM

EC-601

< ECU DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

23

Ground

B/O

Fuel pump relay

Output

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

ignition switch ON

[Engine is running]

0 - 1.0V

[Ignition switch: ON]
• More than a few seconds af-

ter turning ignition switch
ON

BATTERY VOLTAGE
(11 - 14V)

25
29
30
31

Ground

R/O

Y

O

L

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

Output

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

NOTE:
The pulse cycle changes de-
pending on rpm at idle

BATTERY VOLTAGE

(11 - 14V)

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

BATTERY VOLTAGE

(11 - 14V)

32

Ground

Y/L

ECM relay
(Self shut-off)

Output

[Engine is running]
[Ignition switch: OFF]
• A few seconds after turning

ignition switch OFF

0 - 1.0V

[Ignition switch: OFF]
• More than a few seconds af-

ter turning ignition switch
OFF

BATTERY VOLTAGE
(11 - 14V)

33

Ground

L/R

Throttle position sensor 1

Input

[Ignition switch: ON]
• Engine stopped
• Shift lever: 1st
• Accelerator pedal: Fully re-

leased

More than 0.36V

[Ignition switch: ON]
• Engine stopped
• Shift lever: 1st
• Accelerator pedal: Fully de-

pressed

Less than 4.75V

34

Ground

L/O

Throttle position sensor 2

Input

[Ignition switch: ON]
• Engine stopped
• Shift lever: 1st
• Accelerator pedal: Fully re-

leased

Less than 4.75V

[Ignition switch: ON]
• Engine stopped
• Shift lever: 1st
• Accelerator pedal: Fully de-

pressed

More than 0.36V

Terminal No.

Wire

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

PBIB0529E

PBIA4943J

EC-602

< ECU DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

ECM

36

Ground

V/W

Sensor ground
(Throttle position sensor)

—

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

0V

37

Ground

W

Knock sensor

Input

[Engine is running]
• Idle speed

2.5V

38

Ground

GR/B

Engine coolant temperature
sensor

Input

[Engine is running]

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

40

Ground

—

Sensor ground
(Knock sensor)

—

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

0V

41

Ground

G/P

Refrigerant pressure sensor

Input

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

fan motor switch: ON (Com-
pressor operates)

1.0 - 4.0V

44

Ground

B

Sensor ground
(Engine coolant temperature
sensor)

—

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

0V

45

Ground

BR

Mass air flow sensor

Input

[Ignition switch ON]
• Engine stopped

0.4V

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

1.0 - 1.3V

[Engine is running]
• Warm-up condition
• Engine is revving from idle

to about 4,000 rpm

1.0 - 1.3 to 2.4V (Check for linear
voltage rise in response to en-
gine being increased to about
4,000 rpm.)

46

Ground

V

Intake air temperature sen-
sor

Input

[Engine is running]

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

48

Ground

R/L

Sensor ground
(Refrigerant pressure sen-
sor)

—

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

0V

49

Ground

L/G

Heated oxygen sensor 1

—

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

0 - 1.0V
(Periodically change)

50

Ground

Y

Heated oxygen sensor 2

Input

[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 - 1.0V

52

Ground

LG

Sensor ground
(Mass air flow sensor)

—

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

0V

55

Ground

O

Sensor power supply
(Intake air temperature sen-
sor)

—

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

0V

56

Ground

P

Sensor ground
(Heated oxygen sensor 1)

—

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

0V

Terminal No.

Wire

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output