Nissan Pathfinder (2011 year). Manual - part 318

EC-598

< BASIC INSPECTION >

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HOW TO SET SRT CODE

Always drive the vehicle in safe manner according to traffic conditions and obey all traffic laws.

*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal

and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h

(56 MPH) again.

*2: Checking the vehicle speed with GST is advised.

• The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driving

habits, etc.

Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the short-

est.

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2011 Pathfinder

HOW TO SET SRT CODE

EC-599

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Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within

zone A.

*: Normal conditions refer to the following:

• Sea level

• Flat road

• Ambient air temperature: 20 - 30

°

C (68 - 86

°

F)

• Diagnosis is performed as quickly as possible under normal conditions.

Under different conditions [For example: ambient air temperature other than 20 - 30

°

C (68 - 86

°

F)], diagno-

sis may also be performed.

Work Procedure

INFOID:0000000006568909

1.

CHECK DTC

Check DTC.
Is any DTC detected?

YES

>> Repair malfunction(s) and erase DTC. Refer to 

EC-551, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK SRT STATUS

WITH CONSULT-III

Select “SRT STATUS” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.

WITHOUT CONSULT-III

Perform “SRT status” mode with 

EC-527, "On Board Diagnosis Function"

.

WITH GST

Select Service $01 with GST.
Is SRT code(s) set?

YES

>> END

NO-1 >> With CONSULT-III: GO TO 3.

NO-2 >> Without CONSULT-III: GO TO 4.

3.

DTC CONFIRMATION PROCEDURE

1. Select “SRT WORK SUPPORT” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.

2. For SRT(s) that is not set, perform the corresponding “DTC CONFIRMATION PROCEDURE” according to

the “Performance Priority” in the “SRT ITEM” table. Refer to 

EC-596, "Description"

.

3. Check DTC.
Is any DTC detected?

YES

>> Repair malfunction(s) and erase DTC. Refer to 

EC-551, "DTC Index"

.

NO

>> GO TO 9.

4.

PERFORM ROAD TEST

• Check the “Performance Priority” in the “SRT ITEM” table. Refer to 

EC-596, "Description"

.

• Perform the most efficient SRT set driving pattern to set the SRT properly. Refer to 

EC-597, "SRT Set Driv-

ing Pattern"

.

In order to set all SRTs, the SRT set driving pattern must be performed at least once.

>> GO TO 5.

5.

PATTERN 1

1. Check the vehicle condition;

-

Engine coolant temperature is 

−

10 to 35

°

C (14 to 95

°

F).

-

Fuel tank temperature is more than 0

°

C (32

°

F).

2. Start the engine.

3. Keep engine idling until the engine coolant temperature is greater than 70

°

C (158

°

F)

NOTE:

ECM terminal voltage is follows;

• Engine coolant temperature

-

−

10 to 35

°

C (14 to 95

°

F): 3.0 - 4.3 V

- 70

°

(158

°

F): Less than 1.4 V

2011 Pathfinder

EC-600

< BASIC INSPECTION >

[VK56DE]

HOW TO SET SRT CODE

• Fuel tank temperature: Less than 4.1 V

Refer to 

EC-541, "ECM Terminal and Reference Value"

.

>> GO TO 6.

6.

PATTERN 2

1. Drive the vehicle. And depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then

release the accelerator pedal and keep it released for more than 10 seconds.

2. Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH) again

NOTE:

• Checking the vehicle speed with GST is advised.

• When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.

In this case, the time required for diagnosis may be extended.

>> GO TO 7.

7.

PATTERN 3

• Operate vehicle following the driving pattern shown in the figure.

• Release the accelerator pedal during deceleration of vehicle speed

from 90 km/h (56 MPH) to 0 km/h (0 MPH).

>> GO TO 8.

8.

PATTERN 4

• The accelerator pedal must be held very steady during steady-state driving.

• If the accelerator pedal is moved, the test must be conducted again.

>> GO TO 9.

9.

CHECK SRT STATUS

WITH CONSULT-III

Select “SRT STATUS” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.

WITHOUT CONSULT-III

Perform “SRT status” mode with 

EC-527, "On Board Diagnosis Function"

.

WITH GST

Select Service $01 with GST.
Is SRT(s) set?

YES

>> END

NO

>> Call TECH LINE or take appropriate action.

PBIB2244E

2011 Pathfinder

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

EC-601

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Description

INFOID:0000000006244232

The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONI-

TOR” mode of CONSULT-III during normal operation of the Engine Control System. When the value in “SPEC”

of “DATA MONITOR” mode is within the SP value, the Engine Control System is confirmed OK. When the

value in “SPEC” of “DATA MONITOR” mode is NOT within the SP value, the Engine Control System may have

one or more malfunctions.

The SP value is used to detect malfunctions that may affect the Engine Control System, but will not illuminate

the MIL.

The SP value will be displayed for the following three items:

• B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-

tion)

• A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)

• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)

Testing Condition

INFOID:0000000006244233

• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm

2

, 14.25 - 15.12 psi)

• Atmospheric temperature: 20 - 30

°

C (68 - 86

°

F)

• Engine coolant temperature: 75 - 95

°

C (167 - 203

°

F)

• Engine speed: Idle

• Transmission: Warmed-up

- After the engine is warmed up to normal operating temperature, drive vehicle until “ATF TEMP SE 1” (A/T

fluid temperature sensor signal) indicates more than 60

°

C (140

°

F).

• Electrical load: Not applied

- Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight

ahead.

Inspection Procedure

INFOID:0000000006244234

NOTE:

Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1. Perform 

EC-588, "Basic Inspection"

.

2. Check that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2” and “MAS A/F SE-B1” in “SPEC” of “DATA

MONITOR” mode with CONSULT-III.

4. Check that monitor items are within the SP value.
5. If NG, go to 

EC-602, "Diagnosis Procedure"

.

2011 Pathfinder

EC-602

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TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Diagnosis Procedure

INFOID:0000000006244235

OVERALL SEQUENCE

JMBIA1468GB

2011 Pathfinder

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

EC-603

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DETAILED PROCEDURE

1.

CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”

1. Start engine.

2. Check that the testing conditions are met. Refer to 

EC-601, "Testing Condition"

.

3. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each

indication is within the SP value.

NOTE:

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TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Check “A/F ALPHA-B1”, “A/F ALPHA-B2” for approximately 1 minute because they may fluctuate. It is NG

if the indication is out of the SP value even a little.

OK or NG

OK

>> GO TO 17.

NG (Less than the SP value)>>GO TO 2.

NG (More than the SP value)>>GO TO 3.

2.

CHECK “B/FUEL SCHDL”

Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP

value.
OK or NG

OK

>> GO TO 4.

NG (More than the SP value)>>GO TO 19.

3.

CHECK “B/FUEL SCHDL”

Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and check that the indication is within the SP

value.
OK or NG

OK

>> GO TO 6.

NG (More than the SP value)>>GO TO 6.

NG (Less than the SP value)>>GO TO 25.

4.

CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”

1. Stop the engine.

2. Disconnect PCV hose, and then plug it.

3. Start engine.

4. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each

indication is within the SP value.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 6.

5.

CHANGE ENGINE OIL

1. Stop the engine.

2. Change engine oil.

NOTE:

This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving

conditions (such as when engine oil temperature does not rise enough since a journey distance is too

short during winter). The symptom will not be detected after changing engine oil or changing driving con-

ditions.

>>

INSPECTION END

6.

CHECK FUEL PRESSURE

Check fuel pressure. (Refer to 

EC-938, "Fuel Pressure Check"

.)

OK or NG

OK

>> GO TO 9.

NG (Fuel pressure is too high)>>Replace “fuel level sensor unit, fuel filter and fuel pump assembly”, refer to

FL-11

, and then GO TO 8.

NG (Fuel pressure is too low)>>GO TO 7.

7.

DETECT MALFUNCTIONING PART

1. Check the following.

-

Clogged and bent fuel hose and fuel tube

-

Clogged fuel filter

-

Fuel pump and its circuit (Refer to 

EC-914, "Diagnosis Procedure"

.)

2. If NG, repair or replace the malfunctioning part. (Refer to 

EC-938, "Fuel Pressure Check"

.)

If OK, replace “fuel level sensor unit, fuel filter and fuel pump assembly”. Refer to 

FL-11

.

2011 Pathfinder

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

EC-605

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>> GO TO 8.

8.

CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”

1. Start engine.

2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each

indication is within the SP value.

OK or NG

OK

>>

INSPECTION END

NG

>> GO TO 9.

9.

PERFORM POWER BALANCE TEST

1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.

2. Check that each cylinder produces a momentary engine speed drop.
OK or NG

OK

>> GO TO 12.

NG

>> GO TO 10.

10.

DETECT MALFUNCTIONING PART

1. Check the following below.

-

Ignition coil and its circuit (Refer to 

EC-917, "Diagnosis Procedure"

.)

-

Fuel injector and its circuit (Refer to 

EC-911, "Diagnosis Procedure"

.)

-

Intake air leakage

-

Low compression pressure (Refer to 

EM-163, "Compression Pressure"

.)

2. If NG, repair or replace the malfunctioning part.

If OK, replace malfunctioning fuel injector. (It may be caused by leakage from fuel injector or clogging.)

>> GO TO 11.

11.

CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”

1. Start engine.

2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each

indication is within the SP value.

OK or NG

OK

>>

INSPECTION END

NG

>> GO TO 12.

12.

CHECK A/F SENSOR 1 FUNCTION

Perform all DTC Confirmation Procedure related with A/F sensor 1.

• For DTC P0130, P0150, refer to 

EC-665, "DTC Confirmation Procedure"

.

• For DTC P0131, P0151, refer to 

EC-669, "DTC Confirmation Procedure"

.

• For DTC P0132, P0152, refer to 

EC-673, "DTC Confirmation Procedure"

.

• For DTC P0133, P0153, refer to 

EC-677, "DTC Confirmation Procedure"

.

• For DTC P2A00, P2A03, refer to 

EC-897, "DTC Confirmation Procedure"

.

OK or NG

OK

>> GO TO 15.

NG

>> GO TO 13.

13.

CHECK A/F SENSOR 1 CIRCUIT

Perform Diagnostic Procedure according to corresponding DTC.

>> GO TO 14.

14.

CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”

1. Start engine.

2. Select “A/F ALPHA-B1”, “A/F ALPHA-B2” in “SPEC” of “DATA MONITOR” mode, and check that each

indication is within the SP value.

OK or NG

2011 Pathfinder