Nissan Qashqai (2007-2010). Manual — part 355

ECM

EC-939

< ECU DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4

Ground

P

Throttle control motor
(Close)

Output

[Ignition switch: ON]
• Engine stopped
• Shift lever: D (CVT), 1st (M/

T)

• Accelerator pedal: Fully re-

leased

1.8V

5

Ground

R

Heated oxygen sensor 2
heater

Output

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

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 3,600

rpm

BATTERY VOLTAGE
(11 - 14V)

9

Ground

W/D

EVAP canister purge volume
control solenoid valve

Output

[Engine is running]
• Idle speed
• Accelerator pedal: Not de-

pressed even slightly, after
engine starting

BATTERY VOLTAGE

(11 - 14V)

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

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

10

11

Ground

B

ECM ground

—

[Engine is running]
• Idle speed

Body ground

15

Ground

G

Throttle control motor relay

Output

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch: ON]

0 - 1.0V

Terminal No.

Wire

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0326GB

JMBIA0325GB

JMBIA0327GB

JMBIA0328GB

EC-940

< ECU DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

ECM

17
18
21
22

Ground

V

BR/Y

O

Y

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: 2,000 rpm

0.2 - 0.5V

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

25
29
30
31

Ground

R
U

GR

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)

[Engine is running]
• More than 1 second after

turning ignition switch ON

BATTERY VOLTAGE
(11 - 14V)

32

Ground

R/B

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)

Terminal No.

Wire

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0329GB

JMBIA0330GB

JMBIA0331GB

JMBIA0332GB

ECM

EC-941

< ECU DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

33

Ground

Y

Throttle position sensor 1

Input

[Ignition switch: ON]
• Engine stopped
• Shift lever: D (CVT), 1st (M/

T)

• Accelerator pedal: Fully re-

leased

More than 0.36V

[Ignition switch: ON]
• Engine stopped
• Shift lever: D (CVT), 1st (M/

T)

• Accelerator pedal: Fully de-

pressed

Less than 4.75V

34

Ground

R

Throttle position sensor 2

Input

[Ignition switch: ON]
• Engine stopped
• Shift lever: D (CVT), 1st (M/

T)

• Accelerator pedal: Fully re-

leased

Less than 4.75V

[Ignition switch: ON]
• Engine stopped
• Shift lever: D (CVT), 1st (M/

T)

• Accelerator pedal: Fully de-

pressed

More than 0.36V

36

Ground

B

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

P

Engine coolant temperature
sensor

Input

[Engine is running]

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

40

Ground

B

Sensor ground
(Knock sensor)

—

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

0V

41

Ground

G

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

O

Sensor ground
(Engine coolant temperature
sensor)

—

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

0V

45

Ground

BR

Mass air flow sensor

Input

[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 - 1.8V

46

Ground

Y

Intake air temperature sen-
sor

Input

[Engine is running]

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

48

Ground

R/B

Sensor ground
(Refrigerant pressure sen-
sor)

—

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

0V

Terminal No.

Wire

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

EC-942

< ECU DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

ECM

49

Ground

Y

Heated oxygen sensor 1

Input

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

0 - 1.0V

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

B

Sensor ground
(Heated oxygen sensor 1)

—

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

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

59

Ground

SB

Sensor ground
(Heated oxygen sensor 2)

—

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

0V

61

Ground

Y

Crankshaft position sensor
(POS)

Input

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

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

4.0V

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

4.0V

62

Ground

B

Sensor ground
[Crankshaft position sensor
(POS)]

—

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

0V

63

Ground

B

Sensor ground
[Camshaft position sensor
(PHASE)]

—

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

0V

Terminal No.

Wire

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0333GB

JMBIA0334GB