Nissan X-Trail 32. Manual - part 844

ECM

EC-505

< ECU DIAGNOSIS INFORMATION >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

*: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ from
ECM terminals voltage signal.

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.

HO2 S2 DIAG1 (B1)

DTC P0139 self-diagnosis (delayed response) is incomplete.

INCMP

DTC P0139 self-diagnosis (delayed response) is complete.

CMPLT

HO2 S2 DIAG2 (B1)

DTC P0139 self-diagnosis (slow response) is incomplete.

INCMP

DTC P0139 self-diagnosis (slow response) is complete.

CMPLT

SYSTEM 1 DIAG-
NOSIS A B1

DTC P117A self-diagnosis is incomplete.

INCMP

DTC P117A self-diagnosis is complete.

CMPLT

SYSTEM 1 DIAG-
NOSIS B B1

DTC P117A self-diagnosis is on standby.

ABSENT

DTC P117A self-diagnosis is under diagnosis.

PRSENT

MASS AIR FLOW 
SENSOR (Hz) 

See 

EC-566, "Diagnosis Procedure"

.

A/F-S ATMSPHRC 
CRCT B1

Engine: After warming up, idle the engine

Varies depending on vehicle 
environment.

A/F-S ATMSPHRC 
CRCT UP B1

Engine: Running

Varies depending on the 
number of updates.

Monitor Item

Condition

Values/Status

JSBIA0505ZZ

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

−

Signal name

Input/

Output

1

(G)

128

(BR)

Throttle control motor 
(Close)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully released

1.8 V

2

(GR)

128

(BR)

Throttle control motor 
power supply

Input

[Ignition switch: ON]

Battery voltage

(11 - 14 V)

JMBIA0326GB

EC-506

< ECU DIAGNOSIS INFORMATION >

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ECM

3

(L)

128

(BR)

Throttle control motor 
(Open)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D
• Accelerator pedal: Fully depressed

3.2 V

4

(W)

8

(—)

Knock sensor

Input

[Engine is running]
• Idle speed

2.5 V

8

(—)

—

Sensor ground
(Knock sensor shield cir-
cuit)

—

—

—

9

(Y)

10

(P)

13

(L)

14

(G)

128

(BR)

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

Output

[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)

16

(BR)

—

ECM ground

—

—

—

17

(BG)

128

(BR)

EVAP canister purge vol-
ume control solenoid 
valve

Output

[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 start-
ing engine.)

Battery voltage

(11 - 14 V)

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

−

Signal name

Input/

Output

JMBIA0324GB

JMBIA0089GB

JMBIA0090GB

JMBIA0087GB

JMBIA0088GB

ECM

EC-507

< ECU DIAGNOSIS INFORMATION >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

18

(P)

128

(BR)

Fuel pump relay

Output

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

switch ON

[Engine is running]

0 - 1.0 V

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

nition switch ON

Battery voltage

(11 - 14 V)

21

(V)

128

(BR)

Throttle control motor re-
lay

Output

[Ignition switch: OFF]

Battery voltage

(11 - 14 V) 

[Ignition switch: ON]

0 - 1.0 V

22

(Y)

23

(B)

Heated oxygen sensor 2

Input

[Engine is running]
• Revving engine from idle to 3,000 

rpm quickly after the following condi-
tions 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 - 1.0 V

23

(B)

—

Sensor ground
(Heated oxygen sensor 2)

—

—

—

25

(P)

26

(BR)

Engine oil temperature 
sensor

Input

[Engine is running]

0 - 4.8 V

Output voltage varies with engine 

oil temperature.

26

(BR)

—

Sensor ground
(Engine oil temperature 
sensor)

—

—

—

27

(L)

—

Sensor ground
(Engine coolant tempera-
ture sensor)

—

—

—

28

(G)

27

(L)

Engine coolant tempera-
ture sensor

Input

[Engine is running]

0 - 4.8 V

Output voltage varies with engine 

coolant temperature.

30

(R)

—

Sensor ground
[Camshaft position sen-
sor (PHASE)]

—

—

—

31

(W)

30

(R)

Camshaft position sensor 
(PHASE)

Input

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

NOTE:
The pulse cycle changes depending 
on rpm at idle

1.0 - 2.0

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

1.0 - 2.0

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

−

Signal name

Input/

Output

JPBIA4726ZZ

JPBIA4727ZZ

EC-508

< ECU DIAGNOSIS INFORMATION >

[QR25DE]

ECM

32

(B)

—

Sensor power supply
[Camshaft position sen-
sor (PHASE)]

—

[Ignition switch: ON]

5.0 V

33

(V)

34

(GR)

Intake air temperature 
sensor

Input

[Engine is running]

0 - 4.8 V

Output voltage varies with intake 

air temperature.

34

(GR)

—

Sensor ground
(Mass air flow sensor, in-
take air temperature sen-
sor)

—

—

—

35

(BR)

34

(GR)

Mass air flow sensor

Input

[Ignition switch: ON]
• Engine stopped

1.3 V

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

1.3 - 1.6 V

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

4,000 rpm

1.3 - 1.6 to 2.5 V (Check for linear 

voltage rise in response to en-

gine being increased to about 

4,000 rpm.)

36

(L)

—

Sensor power supply
(Mass air flow sensor, in-
take air temperature sen-
sor)

—

[Ignition switch: ON]

5.0 V

37

(—)

—

Shield

—

—

—

38

(SB)

—

Sensor ground
(Engine oil pressure sen-
sor)

—

—

—

39

(P)

38

(SB)

Engine oil pressure sen-
sor

Input

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

1.3 V

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

2.7 V

40

(W)

38

(SB)

Sensor power supply
(Engine oil pressure sen-
sor)

—

[Ignition switch: ON]

5.0 V

41

(Y)

128

(BR)

A/F sensor 1

Input

[Ignition switch: ON]

2.2 V

42

(B)

—

Sensor ground
[Exhaust valve timing 
control position sensor]

—

—

—

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

−

Signal name

Input/

Output

JPBIA3359ZZ

JPBIA3360ZZ