Nissan Pathfinder (2007 year). Manual — part 147

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

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d.

Apply vacuum pressure to hose end [

−

13.3 kPa (

−

100 mmHg,

−

3.94 inHg)] with fuel gauge retainer

remaining open and check that the pressure is applicable.

Without CONSULT-II

1.

Remove fuel tank. Refer to

FL-12, "FUEL TANK"

.

2.

Drain fuel from the tank as follows:

a.

Remove fuel gauge retainer.

b.

Drain fuel from the tank using a handy pump into a fuel container.

3.

Check refueling EVAP vapor cut valve for being stuck to close as follows.
Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that
the air flows freely into the tank.

4.

Check refueling EVAP vapor cut valve for being stuck to open as follows.

a.

Connect vacuum pump to hose end.

b.

Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.

c.

Put fuel tank upside down.

d.

Apply vacuum pressure to hose end [

−

13.3 kPa (

−

100 mmHg,

−

3.94 inHg)] with fuel gauge retainer

remaining open and check that the pressure is applicable.

BBIA0568E

BBIA0568E

EC-44

POSITIVE CRANKCASE VENTILATION

2007 Pathfinder

POSITIVE CRANKCASE VENTILATION

PFP:11810

Description

UBS00K3N

SYSTEM DESCRIPTION

This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the
PCV valve. Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of venti-
lating air. The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air
passes through the hose connecting air inlet tubes to rocker cover. Under full-throttle condition, the manifold
vacuum is insufficient to draw the blow-by flow through the valve. The flow goes through the hose connection
in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.

Component Inspection

UBS00K3O

PCV (POSITIVE CRANKCASE VENTILATION) VALVE

With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet.

SEC921C

PBIB1588E

PBIB1589E

POSITIVE CRANKCASE VENTILATION

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PCV VALVE VENTILATION HOSE

1.

Check hoses and hose connections for leaks.

2.

Disconnect all hoses and clean with compressed air. If any hose
cannot be freed of obstructions, replace.

S-ET277

EC-46

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

2007 Pathfinder

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

PFP:25386

Description

UBS00K3P

●

If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to

BL-94, "NVIS(NISSAN Vehicle Immobilizer System-

NATS)"

.

●

Confirm no self-diagnostic results of NVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.

●

When replacing ECM, initialization of NVIS (NATS) system
and registration of all NVIS (NATS) ignition key IDs must be
carried out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of NVIS
(NATS) initialization and all NVIS (NATS) ignition key ID registration, refer to CONSULT-II Operation
Manual, IVIS/NVIS.

SEF543X

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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ON BOARD DIAGNOSTIC (OBD) SYSTEM

PFP:00028

Introduction

UBS00K3Q

The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:

The above information can be checked using procedures listed in the table below.

×

: Applicable

—: Not applicable

*: When DTC and 1st trip DTC simultaneously appear on the display, they cannot be clearly distinguished from each other.

The malfunction indicator lamp (MIL) on the instrument panel lights up when the same malfunction is detected
in two consecutive trips (Two trip detection logic), or when the ECM enters fail-safe mode. (Refer to

EC-90

.)

Two Trip Detection Logic

UBS00K3R

When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the
ECM memory. The MIL will not light up at this stage. <1st trip>
If the same malfunction is detected again during the next drive, the DTC and Freeze Frame data are stored in
the ECM memory, and the MIL lights up. The MIL lights up at the same time when the DTC is stored. <2nd
trip> The “trip” in the “Two Trip Detection Logic” means a driving mode in which self-diagnosis is performed
during vehicle operation. Specific on board diagnostic items will cause the ECM to light up or blink the MIL,
and store DTC and Freeze Frame data, even in the 1st trip, as shown below.

×

: Applicable

—: Not applicable

When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.

Emission-related diagnostic information

SAE Mode

Diagnostic Trouble Code (DTC)

Service $03 of SAE J1979

Freeze Frame data

Service $02 of SAE J1979

System Readiness Test (SRT) code

Service $01 of SAE J1979

1st Trip Diagnostic Trouble Code (1st Trip DTC)

Service $07 of SAE J1979

1st Trip Freeze Frame data

Test values and Test limits

Service $06 of SAE J1979

Calibration ID

Service $09 of SAE J1979

DTC

1st trip DTC

Freeze Frame

data

1st trip Freeze

Frame data

SRT code

SRT status

Test value

CONSULT-II

×

×

×

×

×

×

—

GST

×

×

×

—

×

×

×

ECM

×

×

*

—

—

—

×

—

Items

MIL

DTC

1st trip DTC

1st trip

2nd trip

1st trip

displaying

2nd trip

displaying

1st trip

displaying

2nd trip

display-

ing

Blinking

Lighting

up

Blinking

Lighting

up

Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0306 is being detected

×

—

—

—

—

—

×

—

Misfire (Possible three way cata-
lyst damage) — DTC: P0300 -
P0306 is being detected

—

—

×

—

—

×

—

—

One trip detection diagnoses
(Refer to

EC-48

.)

—

×

—

—

×

—

—

—

Except above

—

—

—

×

—

×

×

—

EC-48

ON BOARD DIAGNOSTIC (OBD) SYSTEM

2007 Pathfinder

The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands the
driver to repair the malfunction.

Emission-related Diagnostic Information

UBS00K3S

EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS

×

: Applicable

—: Not applicable

Engine operating condition in fail-safe mode

Engine speed will not rise more than 2,500 rpm due to the fuel cut

Items

(CONSULT-II screen terms)

DTC*

1

SRT code

Test value/

Test limit

(GST only)

Trip

MIL

Reference

page

CONSULT-II

GST*

2

ECM*

3

CAN COMM CIRCUIT

U1000

1000*

5

—

—

1

×

EC-154

CAN COMM CIRCUIT

U1001

1001*

5

—

—

2

—

EC-154

CONTROL UNIT (CAN)

U1010

1010

—

—

1

×

EC-157

NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.

P0000

0000

—

—

—

Flashing*

7

EC-62

INT/V TIM CONT-B1

P0011

0011

—

—

2

×

EC-159

INT/V TIM CONT-B2

P0021

0021

—

—

2

×

EC-159

A/F SEN1 HTR (B1)

P0031

0031

—

—

2

×

EC-163

A/F SEN1 HTR (B1)

P0032

0032

—

—

2

×

EC-163

HO2S2 HTR (B1)

P0037

0037

—

×

2

×

EC-171

HO2S2 HTR (B1)

P0038

0038

—

×

2

×

EC-171

A/F SEN1 HTR (B2)

P0051

0051

—

—

2

×

EC-163

A/F SEN1 HTR (B2)

P0052

0052

—

—

2

×

EC-163

HO2S2 HTR (B2)

P0057

0057

—

×

2

×

EC-171

HO2S2 HTR (B2)

P0058

0058

—

×

2

×

EC-171

INT/V TIM V/CIR-B1

P0075

0075

—

—

2

×

EC-180

INT/V TIM V/CIR-B2

P0081

0081

—

—

2

×

EC-180

MAF SEN/CIRCUIT

P0101

0101

—

—

2

×

EC-187

MAF SEN/CIRCUIT

P0102

0102

—

—

1

×

EC-196

MAF SEN/CIRCUIT

P0103

0103

—

—

1

×

EC-196

IAT SEN/CIRCUIT

P0112

0112

—

—

2

×

EC-203

IAT SEN/CIRCUIT

P0113

0113

—

—

2

×

EC-203

ECT SEN/CIRC

P0117

0117

—

—

1

×

EC-208

ECT SEN/CIRC

P0118

0118

—

—

1

×

EC-208

TP SEN 2/CIRC

P0122

0122

—

—

1

×

EC-213

TP SEN 2/CIRC

P0123

0123

—

—

1

×

EC-213

ECT SENSOR

P0125

0125

—

—

2

×

EC-220

IAT SENSOR

P0127

0127

—

—

2

×

EC-223

THERMSTAT FNCTN

P0128

0128

—

—

2

×

EC-226

A/F SENSOR1 (B1)

P0130

0130

—

×

2

×

EC-228

A/F SENSOR1 (B1)

P0131

0131

—

×

2

×

EC-237

A/F SENSOR1 (B1)

P0132

0132

—

×

2

×

EC-245

A/F SENSOR1 (B1)

P0133

0133

×

×

2

×

EC-253

HO2S2 (B1)

P0137

0137

×

×

2

×

EC-265

HO2S2 (B1)

P0138

0138

×

×

2

×

EC-277

HO2S2 (B1)

P0139

0139

×

×

2

×

EC-291

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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A/F SENSOR1 (B2)

P0150

0150

—

×

2

×

EC-228

A/F SENSOR1 (B2)

P0151

0151

—

×

2

×

EC-237

A/F SENSOR1 (B2)

P0152

0152

—

×

2

×

EC-245

A/F SENSOR1 (B2)

P0153

0153

×

×

2

×

EC-253

HO2S2 (B2)

P0157

0157

×

×

2

×

EC-265

HO2S2 (B2)

P0158

0158

×

×

2

×

EC-277

HO2S2 (B2)

P0159

0159

×

×

2

×

EC-291

FUEL SYS-LEAN-B1

P0171

0171

—

—

2

×

EC-303

FUEL SYS-RICH-B1

P0172

0172

—

—

2

×

EC-315

FUEL SYS-LEAN-B2

P0174

0174

—

—

2

×

EC-303

FUEL SYS-RICH-B2

P0175

0175

—

—

2

×

EC-315

FTT SENSOR

P0181

0181

—

—

2

×

EC-326

FTT SEN/CIRCUIT

P0182

0182

—

—

2

×

EC-331

FTT SEN/CIRCUIT

P0183

0183

—

—

2

×

EC-331

TP SEN 1/CIRC

P0222

0222

—

—

1

×

EC-335

TP SEN 1/CIRC

P0223

0223

—

—

1

×

EC-335

MULTI CYL MISFIRE

P0300

0300

—

—

2

×

EC-342

CYL 1 MISFIRE

P0301

0301

—

—

2

×

EC-342

CYL 2 MISFIRE

P0302

0302

—

—

2

×

EC-342

CYL 3 MISFIRE

P0303

0303

—

—

2

×

EC-342

CYL 4 MISFIRE

P0304

0304

—

—

2

×

EC-342

CYL 5 MISFIRE

P0305

0305

—

—

2

×

EC-342

CYL 6 MISFIRE

P0306

0306

—

—

2

×

EC-342

KNOCK SEN/CIRC-B1

P0327

0327

—

—

2

—

EC-350

KNOCK SEN/CIRC-B1

P0328

0328

—

—

2

—

EC-350

KNOCK SEN/CIRC-B2

P0332

0332

—

—

2

—

EC-350

KNOCK SEN/CIRC-B2

P0333

0333

—

—

2

—

EC-350

CKP SEN/CIRCUIT

P0335

0335

—

—

2

×

EC-355

CMP SEN/CIRC-B1

P0340

0340

—

—

2

×

EC-362

CMP SEN/CIRC-B2

P0345

0345

—

—

2

×

EC-362

TW CATALYST SYS-B1

P0420

0420

×

×

2

×

EC-371

TW CATALYST SYS-B2

P0430

0430

×

×

2

×

EC-371

EVAP PURG FLOW/MON

P0441

0441

×

×

2

×

EC-377

EVAP SMALL LEAK

P0442

0442

×

×

2

×

EC-382

PURG VOLUME CONT/V

P0443

0443

—

—

2

×

EC-390

PURG VOLUME CONT/V

P0444

0444

—

—

2

×

EC-398

PURG VOLUME CONT/V

P0445

0445

—

—

2

×

EC-398

VENT CONTROL VALVE

P0447

0447

—

—

2

×

EC-405

VENT CONTROL VALVE

P0448

0448

—

—

2

×

EC-412

EVAP SYS PRES SEN

P0451

0451

—

—

2

×

EC-418

EVAP SYS PRES SEN

P0452

0452

—

—

2

×

EC-421

EVAP SYS PRES SEN

P0453

0453

—

—

2

×

EC-427

Items

(CONSULT-II screen terms)

DTC*

1

SRT code

Test value/

Test limit

(GST only)

Trip

MIL

Reference

page

CONSULT-II

GST*

2

ECM*

3

EC-50

ON BOARD DIAGNOSTIC (OBD) SYSTEM

2007 Pathfinder

EVAP GROSS LEAK

P0455

0455

—

—

2

×

EC-435

EVAP VERY SML LEAK

P0456

0456

×

*

4

×

2

×

EC-442

FUEL LEV SEN SLOSH

P0460

0460

—

—

2

×

EC-451

FUEL LEVEL SENSOR

P0461

0461

—

—

2

×

EC-453

FUEL LEVL SEN/CIRC

P0462

0462

—

—

2

×

EC-455

FUEL LEVEL SEN/CIRC

P0463

0463

—

—

2

×

EC-455

VEH SPEED SEN/CIRC*

6

P0500

0500

—

—

2

×

EC-457

ISC SYSTEM

P0506

0506

—

—

2

×

EC-459

ISC SYSTEM

P0507

0507

—

—

2

×

EC-461

PW ST P SEN/CIRC

P0550

0550

—

—

2

—

EC-463

ECM BACK UP/CIRCUIT

P0603

0603

—

—

2

×

EC-468

ECM

P0605

0605

—

—

1 or 2

×

or —

EC-472

SENSOR POWER/CIRCUIT

P0643

0643

—

—

1

×

EC-475

TCM

P0700

0700

—

—

1

×

AT-104

PNP SW/CIRC

P0705

0705

—

—

2

×

AT-105

ATF TEMP SEN/CIRC

P0710

0710

—

—

2

×

AT-127

TURBINE SENSOR

P0717

0717

—

—

2

×

AT-109

VEH SPD SEN/CIR AT*

6

P0720

0720

—

—

2

×

AT-111

TCC SOLENOID/CIRC

P0740

0740

—

—

2

×

AT-118

A/T TCC S/V FNCTN

P0744

0744

—

—

2

×

AT-120

L/PRESS SOL/CIRC

P0745

0745

—

—

2

×

AT-122

P-N POS SW/CIRCUIT

P0850

0850

—

—

2

×

EC-480

CLOSED LOOP-B1

P1148

1148

—

—

1

×

EC-485

CLOSED LOOP-B2

P1168

1168

—

—

1

×

EC-485

TCS C/U FUNCTN

P1211

1211

—

—

2

—

EC-486

TCS/CIRC

P1212

1212

—

—

2

—

EC-487

ENG OVER TEMP

P1217

1217

—

—

1

×

EC-488

CTP LEARNING

P1225

1225

—

—

2

—

EC-498

CTP LEARNING

P1226

1226

—

—

2

—

EC-500

COLD START CONTROL

P1421

1421

—

—

2

×

EC-502

BAT CURRENT SENSOR

P1550

1550

—

—

2

—

EC-504

BAT CURRENT SENSOR

P1551

1551

—

—

2

—

EC-511

BAT CURRENT SENSOR

P1552

1552

—

—

2

—

EC-511

BAT CURRENT SENSOR

P1553

1553

—

—

2

—

EC-518

BAT CURRENT SENSOR

P1554

1554

—

—

2

—

EC-525

ASCD SW

P1564

1564

—

—

1

—

EC-532

ASCD BRAKE SW

P1572

1572

—

—

1

—

EC-539

ASCD VHL SPD SEN

P1574

1574

—

—

1

—

EC-547

NATS MALFUNCTION

P1610 -

P1615

1610 - 1615

—

—

2

—

EC-46

IN PLUY SPEED

P1715

1715

—

—

2

—

EC-549

A/T INTERLOCK

P1730

1730

—

—

1

×

AT-134

Items

(CONSULT-II screen terms)

DTC*

1

SRT code

Test value/

Test limit

(GST only)

Trip

MIL

Reference

page

CONSULT-II

GST*

2

ECM*

3