Nissan Murano Z50 (2007 year). Manual - part 68

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

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ON BOARD REFUELING VAPOR RECOVERY (ORVR)

PFP:00032

System Description

NBS002YV

From the beginning of refueling, the air and vapor inside the fuel tank go through refueling EVAP vapor cut
valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is
released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.

WARNING:

When conducting inspections below, be sure to observe the following:

●

Put a “CAUTION: FLAMMABLE” sign in workshop.

●

Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.

●

Be sure to furnish the workshop with a CO

2

   fire extinguisher.

CAUTION:

●

Before removing fuel line parts, carry out the following procedures:

–

Put drained fuel in an explosion-proof container and put lid on securely.

–

Release fuel pressure from fuel line. Refer to Fuel Pressure Release, 

EC-78

 .

–

Disconnect battery ground cable.

●

Always replace O-ring when the fuel gauge retainer is removed.

●

Do not kink or twist hose and tube when they are installed.

●

Do not tighten hose and clamps excessively to avoid damaging hoses.

●

After installation, run engine and check for fuel leaks at connection.

●

Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.

PBIB1387E

EC-38

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

Revision: 2006 July

2007 Murano

Diagnostic Procedure

NBS002YW

SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG.

1. 

CHECK EVAP CANISTER

1.

Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.

2.

Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

2. 

CHECK IF EVAP CANISTER SATURATED WITH WATER

Does water drain from the EVAP canister?
Yes or No

Yes

>> GO TO 3.

No

>> GO TO 5.

3. 

REPLACE EVAP CANISTER

Replace EVAP canister with a new one.

>> GO TO 4.

4. 

DETECT MALFUNCTIONING PART

Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.

>> Repair or replace EVAP hose.

5. 

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-40, "Component Inspection"

 .

OK or NG

OK

>> INSPECTION END

NG

>> Replace refueling EVAP vapor cut valve with fuel tank.

PBIB1381E

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

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SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG 
WHILE REFUELING.

1. 

CHECK EVAP CANISTER

1.

Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.

2.

Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

2. 

CHECK IF EVAP CANISTER SATURATED WITH WATER

Does water drain from the EVAP canister?

Yes or No

Yes

>> GO TO 3.

No

>> GO TO 5.

3. 

REPLACE EVAP CANISTER

Replace EVAP canister with a new one.

>> GO TO 4.

4. 

DETECT MALFUNCTIONING PART

Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.

>> Repair or replace EVAP hose.

5. 

CHECK VENT HOSES AND VENT TUBES

Check hoses and tubes between EVAP canister and refueling EVAP vapor cut valve for clogging, kink, loose-
ness and improper connection.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace hoses and tubes.

6. 

CHECK FILLER NECK TUBE

Check recirculation line for clogging, dents and cracks. 

OK or NG

OK

>> GO TO 7.

NG

>> Replace filler neck tube.

PBIB1381E

EC-40

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

Revision: 2006 July

2007 Murano

7. 

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-40, "Component Inspection"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Replace refueling EVAP vapor cut valve with fuel tank.

8. 

CHECK FUEL FILLER TUBE

Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.

OK or NG

OK

>> GO TO 9.

NG

>> Replace fuel filler tube.

9. 

CHECK ONE-WAY FUEL VALVE-I

Check one-way valve for clogging.

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace one-way fuel valve with fuel tank.

10. 

CHECK ONE-WAY FUEL VALVE-II

1.

Make sure that fuel is drained from the tank.

2.

Remove fuel filler tube and hose.

3.

Check one-way fuel valve for operation as follows.
When a stick is inserted, the valve should open, when removing
stick it should close.
Do not drop any material into the tank.

OK or NG

OK

>> INSPECTION END

NG

>> Replace fuel filler tube or replace one-way fuel valve

with fuel tank.

Component Inspection

NBS002YX

REFUELING EVAP VAPOR CUT VALVE

 With CONSULT-II

1.

Remove fuel tank. Refer to 

FL-9, "FUEL TANK"

 .

2.

Drain fuel from the tank as follows:

a.

Remove fuel feed hose located on the fuel gauge retainer.

b.

Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other
side to a fuel container.

c.

Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-II.

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.

SEF665U

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-9, "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.

PBIB1388E

PBIB1388E

EC-42

POSITIVE CRANKCASE VENTILATION

Revision: 2006 July

2007 Murano

POSITIVE CRANKCASE VENTILATION

PFP:11810

Description

NBS002YY

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

NBS002YZ

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-44

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

Revision: 2006 July

2007 Murano

NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-NATS)

PFP:25386

Description

NBS002Z0

●

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-232, "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

NBS002Z1

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-88

 .)

Two Trip Detection Logic

NBS002Z2

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

Diagnostic service

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 status

SRT code

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-46

 .)

—

×

—

—

×

—

—

—

Except above

—

—

—

×

—

×

×

—

EC-46

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Revision: 2006 July

2007 Murano

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

NBS002Z3

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*

4

—

—

1

×

EC-151

CAN COMM CIRCUIT

U1001

1001*

4

—

—

2

—

EC-151

CONTROL UNIT(CAN)

U1010

1010

—

—

1

×

EC-154

NO DTC IS DETECTED. 
FURTHER TESTING 
MAY BE REQUIRED.

P0000

0000

—

—

—

Flashing*

6

—

INT/V TIM CONT-B1

P0011

0011

—

—

2

×

EC-156

INT/V TIM CONT-B2

P0021

0021

—

—

2

×

EC-156

A/F SEN1 HTR (B1)

P0031

0031

—

×

2

×

EC-160

A/F SEN1 HTR (B1)

P0032

0032

—

×

2

×

EC-160

HO2S2 HTR (B1)

P0037

0037

—

×

2

×

EC-169

HO2S2 HTR (B1)

P0038

0038

—

×

2

×

EC-169

A/F SEN1 HTR (B2)

P0051

0051

—

×

2

×

EC-160

A/F SEN1 HTR (B2)

P0052

0052

—

×

2

×

EC-160

HO2S2 HTR (B2)

P0057

0057

—

×

2

×

EC-169

HO2S2 HTR (B2)

P0058

0058

—

×

2

×

EC-169

INT/V TIM V/CIR-B1

P0075

0075

—

—

2

×

EC-178

INT/V TIM V/CIR-B2

P0081

0081

—

—

2

×

EC-178

MAF SEN/CIRCUIT

P0101

0101

—

—

2

×

EC-185

MAF SEN/CIRCUIT

P0102

0102

—

—

1

×

EC-194

MAF SEN/CIRCUIT

P0103

0103

—

—

1

×

EC-194

IAT SEN/CIRCUIT

P0112

0112

—

—

2

×

EC-202

IAT SEN/CIRCUIT

P0113

0113

—

—

2

×

EC-202

ECT SEN/CIRC

P0117

0117

—

—

1

×

EC-207

ECT SEN/CIRC

P0118

0118

—

—

1

×

EC-207

TP SEN 2/CIRC

P0122

0122

—

—

1

×

EC-212

TP SEN 2/CIRC

P0123

0123

—

—

1

×

EC-212

ECT SENSOR

P0125

0125

—

—

2

×

EC-219

IAT SENSOR

P0127

0127

—

—

2

×

EC-222

THERMSTAT FNCTN

P0128

0128

—

—

2

×

EC-225

A/F SENSOR1 (B1)

P0130

0130

—

×

2

×

EC-227

A/F SENSOR1 (B1)

P0131

0131

—

×

2

×

EC-238

A/F SENSOR1 (B1)

P0132

0132

—

×

2

×

EC-248

A/F SENSOR1 (B1)

P0133

0133

×

×

2

×

EC-258

HO2S2 (B1)

P0137

0137

×

×

2

×

EC-271

HO2S2 (B1)

P0138

0138

×

×

2

×

EC-282

HO2S2 (B1)

P0139

0139

×

×

2

×

EC-295

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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A/F SENSOR1 (B2)

P0150

0150

—

×

2

×

EC-227

A/F SENSOR1 (B2)

P0151

0151

—

×

2

×

EC-238

A/F SENSOR1 (B2)

P0152

0152

—

×

2

×

EC-248

A/F SENSOR1 (B2)

P0153

0153

×

×

2

×

EC-258

HO2S2 (B2)

P0157

0157

×

×

2

×

EC-271

HO2S2 (B2)

P0158

0158

×

×

2

×

EC-282

HO2S2 (B2)

P0159

0159

×

×

2

×

EC-295

FUEL SYS-LEAN-B1

P0171

0171

—

—

2

×

EC-306

FUEL SYS-RICH-B1

P0172

0172

—

—

2

×

EC-318

FUEL SYS-LEAN-B2

P0174

0174

—

—

2

×

EC-306

FUEL SYS-RICH-B2

P0175

0175

—

—

2

×

EC-318

FTT SENSOR

P0181

0181

—

—

2

×

EC-330

FTT SEN/CIRCUIT

P0182

0182

—

—

2

×

EC-336

FTT SEN/CIRCUIT

P0183

0183

—

—

2

×

EC-336

TP SEN 1/CIRC

P0222

0222

—

—

1

×

EC-341

TP SEN 1/CIRC

P0223

0223

—

—

1

×

EC-341

MULTI CYL MISFIRE

P0300

0300

—

—

2

×

EC-348

CYL 1 MISFIRE

P0301

0301

—

—

2

×

EC-348

CYL 2 MISFIRE

P0302

0302

—

—

2

×

EC-348

CYL 3 MISFIRE

P0303

0303

—

—

2

×

EC-348

CYL 4 MISFIRE

P0304

0304

—

—

2

×

EC-348

CYL 5 MISFIRE

P0305

0305

—

—

2

×

EC-348

CYL 6 MISFIRE

P0306

0306

—

—

2

×

EC-348

KNOCK SEN/CIRC-B1

P0327

0327

—

—

2

—

EC-357

KNOCK SEN/CIRC-B1

P0328

0328

—

—

2

—

EC-357

CKP SEN/CIRCUIT

P0335

0335

—

—

2

×

EC-362

CMP SEN/CIRC-B1

P0340

0340

—

—

2

×

EC-369

CMP SEN/CIRC-B2

P0345

0345

—

—

2

×

EC-369

TW CATALYST SYS-B1

P0420

0420

×

×

2

×

EC-378

TW CATALYST SYS-B2

P0430

0430

×

×

2

×

EC-378

EVAP PURG FLOW/MON

P0441

0441

×

×

2

×

EC-384

EVAP SMALL LEAK

P0442

0442

×

×

2

×

EC-389

PURG VOLUME CONT/V

P0443

0443

—

—

2

×

EC-398

PURG VOLUME CONT/V

P0444

0444

—

—

2

×

EC-406

PURG VOLUME CONT/V

P0445

0445

—

—

2

×

EC-406

VENT CONTROL VALVE

P0447

0447

—

—

2

×

EC-413

VENT CONTROL VALVE

P0448

0448

—

—

2

×

EC-420

EVAP SYS PRES SEN

P0451

0451

—

—

2

×

EC-427

EVAP SYS PRES SEN

P0452

0452

—

—

2

×

EC-430

EVAP SYS PRES SEN

P0453

0453

—

—

2

×

EC-436

EVAP GROSS LEAK

P0455

0455

—

—

2

×

EC-444

EVAP VERY SML LEAK

P0456

0456

×

*

7

×

2

×

EC-452

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-48

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Revision: 2006 July

2007 Murano

FUEL LEV SEN SLOSH

P0460

0460

—

—

2

×

EC-461

FUEL LEVEL SENSOR

P0461

0461

—

—

2

×

EC-463

FUEL LEVL SEN/CIRC

P0462

0462

—

—

2

×

EC-465

FUEL LEVL SEN/CIRC

P0463

0463

—

—

2

×

EC-465

VEH SPEED SEN/CIRC*

5

P0500

0500

—

—

2

×

EC-467

ISC SYSTEM

P0506

0506

—

—

2

×

EC-469

ISC SYSTEM

P0507

0507

—

—

2

×

EC-471

PW ST P SEN/CIRC

P0550

0550

—

—

2

—

EC-473

ECM BACK UP/CIRCUIT

P0603

0603

—

—

2

×

EC-478

ECM

P0605

0605

—

—

1 or 2

×

 or —

EC-482

SENSOR POWER/CIRC

P0643

0643

—

—

1

×

EC-485

PNP SW/CIRC

P0705

0705

—

—

2

×

CVT-77

ATF TEMP SEN/CIRC

P0710

0710

—

—

1

×

CVT-84

INPUT SPD SEN/CIRC

P0715

0715

—

—

2

×

CVT-89

VEH SPD SEN/CIR AT*

5

P0720

0720

—

—

2

×

CVT-94

A/T TCC S/V FNCTN

P0744

0744

—

—

2

×

CVT-109

PRS CNT SOL/A FCTN

P0746

0746

—

—

1

×

CVT-117

PRS CNT SOL/B FCTN

P0776

0776

—

—

2

×

CVT-120

PRS CNT SOL/B CIRC

P0778

0778

—

—

2

×

CVT-123

TR PRS SENS/A CIRC

P0840

0840

—

—

2

×

CVT-133

TR PRS SENS/B CIRC

P0845

0845

—

—

2

×

CVT-141

P-N POS SW/CIRCUIT

P0850

0850

—

—

2

×

EC-490

CLOSED LOOP-B1

P1148

1148

—

—

1

×

EC-495

CLOSED LOOP-B2

P1168

1168

—

—

1

×

EC-495

TCS C/U FUNCTN

P1211

1211

—

—

2

—

EC-496

TCS/CIRC

P1212

1212

—

—

2

—

EC-497

ENG OVER TEMP

P1217

1217

—

—

1

×

EC-498

CTP LEARNING

P1225

1225

—

—

2

—

EC-508

CTP LEARNING

P1226

1226

—

—

2

—

EC-510

COLD START CONTROL

P1421

1421

—

—

2

×

EC-512

ASCD SW

P1564

1564

—

—

1

—

EC-514

ASCD BRAKE SW

P1572

1572

—

—

1

—

EC-521

ASCD VHL SPD SEN

P1574

1574

—

—

1

—

EC-529

NATS MALFUNCTION

P1610 - 

P1615

1610 - 1615

—

—

2

—

BL-232

CVT C/U FUNCT

P1700

1700

—

—

1

—

EC-531

IN PULY SPEED

P1715

1715

—

—

2

—

EC-532

V/SP SEN (A/T OUT)

P1720

1720

—

—

2

—

EC-534

LU-SLCT SOL/CIRC

P1740

1740

—

—

2

×

CVT-162

STEP MOTR CIRC

P1777

1777

—

—

1

×

CVT-168

STEP MOTR FNC

P1778

1778

—

—

2

×

CVT-172

VIAS S/V CIRC

P1800

1800

—

—

2

—

EC-536

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

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.
*5: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*6: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to 

EC-54, "How to Display SRT Status"

 .

*7: SRT code will not be set if the self-diagnostic result is NG.

BRAKE SW/CIRCUIT

P1805

1805

—

—

2

—

EC-541

ETC MOT PWR

P2100

2100

—

—

1

×

EC-546

ETC FUNCTION/CIRC

P2101

2101

—

—

1

×

EC-552

ETC MOT PWR

P2103

2103

—

—

1

×

EC-546

ETC MOT

P2118

2118

—

—

1

×

EC-558

ETC ACTR

P2119

2119

—

—

1

×

EC-563

APP SEN 1/CIRC

P2122

2122

—

—

1

×

EC-565

APP SEN 1/CIRC

P2123

2123

—

—

1

×

EC-565

APP SEN 2/CIRC

P2127

2127

—

—

1

×

EC-571

APP SEN 2/CIRC

P2128

2128

—

—

1

×

EC-571

TP SENSOR

P2135

2135

—

—

1

×

EC-578

APP SENSOR

P2138

2138

—

—

1

×

EC-585

A/F SENSOR1 (B1)

P2A00

2A00

—

×

2

×

EC-592

A/F SENSOR1 (B2)

P2A03

2A03

—

×

2

×

EC-592

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

Revision: 2006 July

2007 Murano

DTC AND 1ST TRIP DTC

The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words,
the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in 

EC-58, "HOW

TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"

 .

For malfunctions in which 1st trip DTCs are displayed, refer to 

EC-46, "EMISSION-RELATED DIAGNOSTIC

INFORMATION ITEMS"

 . These items are required by legal regulations to continuously monitor the system/

component. In addition, the items monitored non-continuously are also displayed on CONSULT-II.
1st trip DTC is specified in Service $07 of SAE J1979. 1st trip DTC detection occurs without lighting up the MIL
and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the
vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step 2, refer to 

EC-81, "WORK FLOW"

 . Then perform DTC Confir-

mation Procedure or Overall Function Check to try to duplicate the malfunction. If the malfunction is dupli-
cated, the item requires repair.

How to Read DTC and 1st Trip DTC

DTC and 1st trip DTC can be read by the following methods.

 With CONSULT-II
 With GST

CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P0850, P1148, etc.
These DTCs are prescribed by SAE J2012.
(CONSULT-II also displays the malfunctioning component or system.)

 No Tools

The number of blinks of the MIL in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0340, 0850, 1148, etc.
These DTCs are controlled by NISSAN.

●

1st trip DTC No. is the same as DTC No.

●

Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to nor-
mal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if
available) is recommended.

A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunc-
tion is displayed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-II. Time data indicates how many times
the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be [0].
If a 1st trip DTC is stored in the ECM, the time data will be [1t].

PBIB0911E

ON BOARD DIAGNOSTIC (OBD) SYSTEM

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FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA

The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, absolute throttle position, base
fuel schedule and intake air temperature at the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
details, see 

EC-114, "Freeze Frame Data and 1st Trip Freeze Frame Data"

 .

Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.

For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was stored in the 2nd
trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated
from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different mal-
function is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is
stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st
trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze
frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the
ECM memory.
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM mem-
ory is erased. Procedures for clearing the ECM memory are described in 

EC-58, "HOW TO ERASE EMIS-

SION-RELATED DIAGNOSTIC INFORMATION"

 .

SYSTEM READINESS TEST (SRT) CODE

System Readiness Test (SRT) code is specified in Service $01 of SAE J1979.
As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of
SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and com-
ponents. Completion must be verified in order for the emissions inspection to proceed.
If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use
the information in this Service Manual to set the SRT to “CMPLT”.
In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT
status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains
“CMPLT” until the self-diagnosis memory is erased.
Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's
normal driving pattern; the SRT will indicate “INCMP” for these items.

NOTE:
The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM mem-
ory power supply is interrupted for several hours.
If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will con-
tinue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the
vehicle is returned to the customer untested.

NOTE:
If MIL is ON during the state emissions inspection, the vehicle is also returned to the customer untested even
though the SRT indicates “CMPLT” for all test items. Therefore, it is important to check SRT (“CMPLT”) and
DTC (No DTCs) before the inspection.

Priority

Items

1

Freeze frame data

Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175

2

Except the above items (Includes CVT related items)

3

1st trip freeze frame data

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SRT Item

The table below shows required self-diagnostic items to set the SRT to “CMPLT”.

*: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority for
models with CONSULT-II.

SRT Set Timing

SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is
done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and
is shown in the table below.

OK: Self-diagnosis is carried out and the result is OK.
NG: Self-diagnosis is carried out and the result is NG.
—: Self-diagnosis is not carried out.

When all SRT related self-diagnoses showed OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will
indicate “CMPLT”. 

→

 Case 1 above

When all SRT related self-diagnoses showed OK results through several different cycles, the SRT will indicate
“CMPLT” at the time the respective self-diagnoses have at least one OK result. 

→

 Case 2 above

If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indi-
cate “CMPLT”. 

→

 Case 3 above

The table above shows that the minimum number of cycles for setting SRT as “INCMP” is one (1) for each
self-diagnosis (Case 1 & 2) or two (2) for one of self-diagnoses (Case 3). However, in preparation for the state
emissions inspection, it is unnecessary for each self-diagnosis to be executed twice (Case 3) for the following
reasons:

SRT item

(CONSULT-II indication)

Performance 

Priority*

Required self-diagnostic items to set the SRT to “CMPLT”

Corresponding 

DTC No.

CATALYST

2

Three way catalyst function

P0420, P0430

EVAP SYSTEM

2

EVAP control system purge flow monitoring

P0441

1

EVAP control system

P0442

2

EVAP control system

P0456

HO2S

2

Air fuel ratio (A/F) sensor 1

P0133, P0153

Heated oxygen sensor 2

P0137, P0157

Heated oxygen sensor 2

P0138, P0158

Heated oxygen sensor 2

P0139, P0159

Self-diagnosis result

Example

Diagnosis

Ignition cycle 

←

 ON 

→

 OFF

 

←

 ON 

→

 OFF

 

←

 ON 

→

 OFF

 

←

 ON 

→

All OK

Case 1

P0400

OK (1)

— (1)

OK (2)

— (2)

P0402

OK (1)

— (1)

— (1)

OK (2)

P1402

OK (1)

OK (2)

— (2)

— (2)

SRT of EGR

“CMPLT”

“CMPLT”

“CMPLT”

“CMPLT”

Case 2

P0400

OK (1)

— (1)

— (1)

— (1)

P0402

— (0)

— (0)

OK (1)

— (1)

P1402

OK (1)

OK (2)

— (2)

— (2)

SRT of EGR

“INCMP”

“INCMP”

“CMPLT”

“CMPLT”

NG exists

Case 3

P0400

OK

OK

—

—

P0402

—

—

—

—

P1402

NG

—

NG

NG

(Consecutive 

NG)

(1st trip)

DTC

1st trip DTC

—

1st trip DTC

DTC

(= MIL ON)

SRT of EGR

“INCMP”

“INCMP”

“INCMP”

“CMPLT”