Nissan Pathfinder. Manual - part 443

 

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Nissan Pathfinder. Manual - part 443

 

 

EC-78

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

ECM

*1: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM inter-

nally. Thus, they differ from ECM terminals voltage signal.

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

PG-86, "How to

Handle Battery"

.

*3: The item is indicated, but not used.

TERMINAL LAYOUT

PHYSICAL VALUES

NOTE:

• ECM is located in the engine room left side near battery.

• Specification data are reference values.

• Pulse signal is measured by CONSULT.

AC EVA TEMP

Engine: Running

Indicates A/C evaporator 

temperature sent from“A/C 

auto amp.”.

AC EVA TARGET

Engine: Running

Indicates target A/C evapora-
tor temperature sent from “A/

C auto amp.”.

Monitor Item

Condition

Values/Status

JSBIA0505ZZ

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

1

(R)

128

(B)

Throttle control motor power 
supply

Input

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14 V)

2

(G)

128

(B)

Throttle control motor (Close)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D position
• Accelerator pedal: Fully re-

leased

0 - 14 V

3

(Y)

128

(B)

A/F sensor 1 heater (bank 2)

Output

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

(More than 140 seconds after 
starting engine)

2.9 - 8.8 V

JMBIA1125GB

JMBIA0030GB

ECM

EC-79

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4

(LG)

107
(W)

Engine oil pressure sensor

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

5

(W)

128

(B)

Throttle control motor (Open)

Output

[Ignition switch: ON]
• Engine stopped
• Selector lever: D position
• Accelerator pedal: Fully de-

pressed

0 - 14 V

[Ignition switch: ON]
• Engine stopped
• Selector lever: D position
• Accelerator pedal: Fully re-

leased

0 - 14 V

6

(BR)

128

(B)

A/F sensor 1 heater
(bank 1)

Output

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

(More than 140 seconds after 
starting engine)

2.9 - 8.8 V

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JPBIA3359ZZ

JPBIA3360ZZ

JMBIA0031GB

JMBIA0032GB

JMBIA0902GB

EC-80

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

ECM

9

(LG)

128

(B)

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 - 0.2 V

10

(LG)

Ignition signal No. 2

11

(LG)

Ignition signal No. 1

13

(LG)

Ignition signal No. 6

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

0.1 - 0.4 V

14

(LG)

Ignition signal No. 5

15

(LG)

Ignition signal No. 4

12

(B)

ECM ground

16

(B)

ECM ground

19

(R)

Sensor ground
(Throttle position sensor)

22

(B)

128

(B)

Throttle position sensor 1

Input

[Ignition switch: ON]
• Engine stopped
• Selector lever: D position
• Accelerator pedal: Fully re-

leased

More than 0.36 V

[Ignition switch: ON]
• Engine stopped
• Selector lever: D position
• Accelerator pedal: Fully de-

pressed

Less than 4.75 V

23

(W)

128

(B)

Throttle position sensor 2

Input

[Ignition switch: ON]
• Engine stopped
• Selector lever: D position
• Accelerator pedal: Fully re-

leased

Less than 4.75 V

[Ignition switch: ON]
• Engine stopped
• Selector lever: D position
• Accelerator pedal: Fully de-

pressed

More than 0.36 V

24

(G)

19

(R)

Sensor power supply
(Throttle position sensor)

[Ignition switch: ON]

5 V

26

(GR)

128

(B)

Power supply for ECM (Back-
up)

Input

[Ignition switch: OFF]

BATTERY VOLTAGE
(11 - 14 V)

31

(V)

128

(B)

ECM relay
(Self shut-off)

Output

• [Engine is running]
• [Ignition switch: OFF]

A few seconds after turning 
ignition switch OFF

0 - 1.5 V

[Ignition switch: OFF]
More than a few seconds after 
turning ignition switch OFF

BATTERY VOLTAGE
(11 - 14 V)

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0035GB

JMBIA0036GB

ECM

EC-81

< ECU DIAGNOSIS INFORMATION >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

33

(Y)

128

(B)

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 - 14 V)

44

(V)

Fuel injector No. 2

45

(V)

Fuel injector No. 6

46

(Y)

Fuel injector No. 5

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

BATTERY VOLTAGE
(11 - 14 V)

47

(V)

Fuel injector No. 4

48

(Y)

Fuel injector No. 3

34

(G)

128

(B)

Throttle control motor relay

Output

[Ignition switch: ON 

→ OFF]

0 - 1.0 V 

→ BATTERY VOLTAGE 

(11 - 14 V) 

→ 0 V

[Ignition switch: ON]

0 - 1.0 V

37

(SB)

128

(B)

Heated oxygen sensor 2 heat-
er (bank 1)

Output

[Engine is running]
Engine speed: Below 3,600 rpm 
after the following conditions are 
met
• Engine: after warming up
• Keeping the engine speed be-

tween 3,500 and 4,000 rpm 
for 1 minute and at idle for 1 
minute under no load

10 V

• [Ignition switch: ON]

Engine stopped

• [Engine is running]

Engine speed: Above 3,600 
rpm

BATTERY VOLTAGE
(11 - 14 V)

38

(BR)

128

(B)

Electronic controlled engine 
mount control solenoid valve

Output

[Engine is running]
Idle speed

0 - 1.0 V

[Engine is running]
Engine speed: More than 950 
rpm

BATTERY VOLTAGE
(11 - 14 V)

39

(BR)

128

(B)

VIAS control solenoid valve 1

Output

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

BATTERY VOLTAGE
(11 - 14 V)

[Engine is running]
• Warm-up condition
• When revving engine up to 

5,000 rpm quickly

BATTERY VOLTAGE (11 - 14 V)

0 - 1.0 V

BATTERY VOLTAGE (11 - 14 V)

40

(BR)

128

(B)

VIAS control solenoid valve 2

Output

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

BATTERY VOLTAGE
(11 - 14 V)

[Engine is running]
• Warm-up condition
• When revving engine up to 

5,000 rpm quickly

BATTERY VOLTAGE (11 - 14 V)

0 - 1.0 V

BATTERY VOLTAGE (11 - 14 V)

Terminal No.

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

JMBIA0047GB

JMBIA0048GB

JMBIA0902GB

 

 

 

 

 

 

 

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