Nissan Pathfinder (2006 year). Instruction - part 155

TROUBLE DIAGNOSIS

EC-99

C

D

E

F

G

H

I

J

K

L

M

A

EC

2006 Pathfinder

PBIB2646E

EC-100

TROUBLE DIAGNOSIS

2006 Pathfinder

BBIA0581E

TROUBLE DIAGNOSIS

EC-101

C

D

E

F

G

H

I

J

K

L

M

A

EC

2006 Pathfinder

Vacuum Hose Drawing

UBS00K48

Refer to 

EC-23, "System Diagram"

   for Vacuum Control System.

PBIB2529E

EC-102

TROUBLE DIAGNOSIS

2006 Pathfinder

Circuit Diagram

UBS00K49

BBWA2356E

TROUBLE DIAGNOSIS

EC-103

C

D

E

F

G

H

I

J

K

L

M

A

EC

2006 Pathfinder

BBWA2357E

EC-104

TROUBLE DIAGNOSIS

2006 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-105

C

D

E

F

G

H

I

J

K

L

M

A

EC

2006 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: Fully 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-106

TROUBLE DIAGNOSIS

2006 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 
(Bank 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