Nissan Pathfinder (2005 year). Manual - part 158

 

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Nissan Pathfinder (2005 year). Manual - part 158

 

 

TROUBLE DIAGNOSIS

EC-115

C

D

E

F

G

H

I

J

K

L

M

A

EC

2005 Pathfinder

BBWA1726E

EC-116

TROUBLE DIAGNOSIS

2005 Pathfinder

ECM Harness Connector Terminal Layout

UBS00K4A

ECM Terminals and Reference Value

UBS00K4B

PREPARATION

1.

ECM located in the engine room passenger side behind reser-
voir tank.

2.

Remove ECM harness connector.

3.

When disconnecting ECM harness connector, loosen it with
levers as far as they will go as shown in the figure.

4.

Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.

●

Use extreme care not to touch 2 pins at one time.

●

Data is for comparison and may not be exact.

ECM INSPECTION TABLE

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

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.

MBIB0045E

BBIA0537E

PBIB1512E

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

1

BR

ECM ground

[Engine is running]

●

Idle speed

Body ground

2

G

A/F sensor 1 heater
(bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

PBIB1584E

TROUBLE DIAGNOSIS

EC-117

C

D

E

F

G

H

I

J

K

L

M

A

EC

2005 Pathfinder

3

V

Throttle control motor relay
power supply

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

4

L/W

Throttle control motor
(Close)

[Ignition switch: ON]

●

Engine: Stopped

●

Shift lever: D

●

Accelerator pedal: Released

0 - 14V

5

L/B

Throttle control motor
(Open)

[Ignition switch: ON]

●

Engine: Stopped

●

Shift lever: D

●

Accelerator pedal: Fully depressed

0 - 14V

6

R

Heated oxygen sensor 2
heater (bank 2)

[Engine is running]

●

Engine speed is below 3,600 rpm 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

[Ignition switch: ON]

●

Engine: Stopped

[Engine is running]

●

Engine speed: Above 3,600 rpm

BATTERY VOLTAGE
(11 - 14V)

10

W

Intake valve timing control
solenoid valve (bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,500 rpm

7 - 12V

11

LG

Intake valve timing control
solenoid valve (bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,500 rpm

7 - 12V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB1104E

PBIB1105E

PBIB1790E

PBIB1790E

EC-118

TROUBLE DIAGNOSIS

2005 Pathfinder

12

P

Power steering pressure
sensor

[Engine is running]

●

Steering wheel: Being turned

0.5 - 4.5V

[Engine is running]

●

Steering wheel: Not being turned

0.4 - 0.8V

13

G

Crankshaft position sensor
(POS)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle

Approximately 10V

[Engine is running]

●

Engine speed: 2,000 rpm

Approximately 10V

14

Y

Camshaft position sensor
(PHASE) (bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle

1.0 - 4.0V

[Engine is running]

●

Engine speed: 2,000 rpm

1.0 - 4.0V

15

W

Knock sensor 1

[Engine is running]

●

Idle speed

Approximately 2.5V

16

BR

A/F sensor 1 (Bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 3.1V

35

O

Approximately 2.6V

56

LG

Approximately 2.3V

75

P

Approximately 2.3V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB1041E

PBIB1042E

PBIB1039E

PBIB1040E

TROUBLE DIAGNOSIS

EC-119

C

D

E

F

G

H

I

J

K

L

M

A

EC

2005 Pathfinder

21
22
23

W
LG
SB

Injector No. 5
Injector No. 3
Injector No. 1

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

24

G

A/F sensor 1 heater

(Bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

25

P

Heated oxygen sensor 2
heater (bank 1)

[Engine is running]

●

Engine speed is below 3,600 rpm 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

[Ignition switch: ON]

●

Engine: Stopped

[Engine is running]

●

Engine speed: Above 3,600 rpm

BATTERY VOLTAGE
(11 - 14V)

29

G

VIAS control solenoid valve

[Engine is running]

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Engine speed is between 2,200 and 3,300
rpm

0 - 1.0V

32

W

EVAP control system pres-
sure sensor

[Ignition switch: ON]

Approximately 1.8 - 4.8V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC984C

SEC985C

PBIB1584E

EC-120

TROUBLE DIAGNOSIS

2005 Pathfinder

33

L

Camshaft position sensor
(PHASE) (bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle

1.0 - 4.0V

[Engine is running]

●

Engine speed: 2,000 rpm

1.0 - 4.0V

34

BR

Intake air temperature sen-
sor

[Engine is running]

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

36

W

Knock sensor 2

[Engine is running]

●

Idle speed

Approximately 2.5V

40
41
42

V
R
O

Injector No. 6
Injector No. 4
Injector No. 2

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB1039E

PBIB1040E

SEC984C

SEC985C

TROUBLE DIAGNOSIS

EC-121

C

D

E

F

G

H

I

J

K

L

M

A

EC

2005 Pathfinder

45

R

EVAP canister purge vol-
ume control solenoid valve

[Engine is running]

●

Idle speed

●

Accelerator pedal is not depressed even
slightly, after engine starting

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Engine speed: About 2,000 rpm (More than
100 seconds after starting engine)

BATTERY VOLTAGE

(11 - 14V)

47

L

Sensor power supply
(Throttle position sensor)

[Ignition switch: ON]

Approximately 5V

48

SB

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

[Ignition switch: ON]

Approximately 5V

49

P

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

[Ignition switch: ON]

Approximately 5V

50

W

Throttle position sensor 1

[Ignition switch: ON]

●

Engine: Stopped

●

Shift lever: D

●

Accelerator pedal: Fully released

More than 0.36V

[Ignition switch: ON]

●

Engine: Stopped

●

Shift lever: D

●

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 - 1.8V

55

G

Heated oxygen sensor 2
(bank 2)

[Engine is running]

●

Warm-up condition

●

Revving engine from idle to 3,000 rpm
quickly after the following conditions are met

–

After 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

57

GR

A/F sensor 1 (Bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 2.6V

58

O

Approximately 2.3V

76

V

Approximately 3.1V

77

Y

Approximately 2.3V

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC990C

SEC991C

EC-122

TROUBLE DIAGNOSIS

2005 Pathfinder

60
61
62

SB
L
Y

Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm
at idle

0 - 0.2V

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,500 rpm

0.1 - 0.4V

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

●

Accelerator pedal: Fully released

Less than 4.75V

[Ignition switch: ON]

●

Engine: Stopped

●

Shift lever: D

●

Accelerator pedal: Fully depressed

More than 0.36V

70

BR

Refrigerant pressure sensor

[Engine is running]

●

Warm-up condition

●

Both A/C switch and blower switch: ON
(Compressor operates)

1.0 - 4.0V

71

R

Battery current sensor

[Engine is running]

●

Battery: Fully charged*

●

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
(bank 1)

[Engine is running]

●

Warm-up condition

●

Revving engine from idle to 3,000 rpm
quickly after the following conditions are met

–

After 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

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

SEC986C

SEC987C

 

 

 

 

 

 

 

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