Nissan Pathfinder (2011 year). Manual — part 246

EC-22

< BASIC INSPECTION >

[VQ40DE]

INSPECTION AND ADJUSTMENT

2. Check idle speed.

Refer to

EC-24, "Idle Speed and Ignition Timing Check"

.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

Check the following.

• Check camshaft position sensor (PHASE) and circuit. Refer to

EC-224, "Diagnosis Procedure"

.

• Check crankshaft position sensor (POS) and circuit. Refer to

EC-219, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 9.

NG

>> 1. Repair or replace.

2. GO TO 4.

9.

CHECK ECM FUNCTION

1. Substitute with a non-malfunctioning ECM to check ECM function. (ECM may be the cause of the incident,

although this is rare.)

2. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

SEC-10, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

(with Intelligent Key system) or

SEC-119, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

: Special Repair Requirement"

(without Intelligent Key system).

>> GO TO 4.

10.

CHECK IGNITION TIMING

1. Run engine at idle.

2. Check ignition timing with a timing light.

Refer to

EC-24, "Idle Speed and Ignition Timing Check"

.

OK or NG

OK

>> GO TO 19.

NG

>> GO TO 11.

11.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1. Stop engine.

2. Perform

EC-25, "Accelerator Pedal Released Position Learning"

.

>> GO TO 12.

12.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform

EC-25, "Throttle Valve Closed Position Learning"

.

>> GO TO 13.

13.

PERFORM IDLE AIR VOLUME LEARNING

Refer to

EC-25, "Idle Air Volume Learning"

.

Is Idle Air Volume Learning carried out successfully?

Yes or No

625

±

50 rpm (in P or N position)

15

±

5

°

BTDC (in P or N position)

BBIA0531E

2011 Pathfinder

INSPECTION AND ADJUSTMENT

EC-23

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Yes

>> GO TO 14.

No

>> 1. Follow the instruction of Idle Air Volume Learning.

2. GO TO 4.

14.

CHECK TARGET IDLE SPEED AGAIN

With CONSULT-III

1. Start engine and warm it up to normal operating temperature.

2. Read idle speed in “DATA MONITOR” mode with CONSULT-III.

Refer to

EC-24, "Idle Speed and Ignition Timing Check"

.

Without CONSULT-III

1. Start engine and warm it up to normal operating temperature.

2. Check idle speed. Refer to

EC-24, "Idle Speed and Ignition Timing Check"

.

OK or NG

OK

>> GO TO 15.

NG

>> GO TO 17.

15.

CHECK IGNITION TIMING AGAIN

1. Run engine at idle.

2. Check ignition timing with a timing light.

Refer to

EC-24, "Idle Speed and Ignition Timing Check"

.

OK or NG

OK

>> GO TO 19.

NG

>> GO TO 16.

16.

CHECK TIMING CHAIN INSTALLATION

Check timing chain installation. Refer to

EM-61, "Removal and Installation"

.

OK or NG

OK

>> GO TO 17.

NG

>> 1. Repair the timing chain installation.

2. GO TO 4.

17.

DETECT MALFUNCTIONING PART

Check the following.

• Check camshaft position sensor (PHASE) and circuit. Refer to

EC-224, "Diagnosis Procedure"

.

• Check crankshaft position sensor (POS) and circuit. Refer to

EC-219, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 18.

NG

>> 1. Repair or replace.

2. GO TO 4.

18.

CHECK ECM FUNCTION

1. Substitute with a non-malfunctioning ECM to check ECM function. (ECM may be the cause of the incident,

although this is rare.)

2. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

SEC-10, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

(with Intelligent Key system) or

SEC-119, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

: Special Repair Requirement"

(without Intelligent Key system).

625

±

50 rpm (in P or N position)

625

±

50 rpm (in P or N position)

15

±

5

°

BTDC (in P or N position)

BBIA0531E

2011 Pathfinder

EC-24

< BASIC INSPECTION >

[VQ40DE]

INSPECTION AND ADJUSTMENT

>> GO TO 4.

19.

INSPECTION END

Did you replace the ECM, referring this Basic Inspection Procedure?
Yes or No

Yes

>> 1. Perform

EC-25, "VIN Registration"

.

2.

INSPECTION END

No

>>

INSPECTION END

Idle Speed and Ignition Timing Check

INFOID:0000000006243743

IDLE SPEED

With CONSULT-III

Check idle speed in “DATA MONITOR” mode with CONSULT-III.

With GST

Check idle speed with GST.

IGNITION TIMING

1. Attach timing light to loop wire as shown.

2. Check ignition timing.

Procedure After Replacing ECM

INFOID:0000000006243744

When replacing ECM, the following procedure must be performed.
1. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

SEC-10, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

(with Intelligent Key system) or

SEC-119, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

: Special Repair Requirement"

(without Intelligent Key system).

2. Perform

EC-25, "VIN Registration"

.

3. Perform

EC-25, "Accelerator Pedal Released Position Learning"

.

4. Perform

EC-25, "Throttle Valve Closed Position Learning"

.

5. Perform

EC-25, "Idle Air Volume Learning"

.

BBIA0530E

BBIA0531E

2011 Pathfinder

INSPECTION AND ADJUSTMENT

EC-25

< BASIC INSPECTION >

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VIN Registration

INFOID:0000000006243745

DESCRIPTION

VIN Registration is an operation to register VIN in ECM. It must be performed each time ECM is replaced.

NOTE:

Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).

OPERATION PROCEDURE

With CONSULT-III

1. Check the VIN of the vehicle and note it. Refer to

GI-21, "Identification Number"

.

2. Turn ignition switch ON with engine stopped.
3. Select “VIN REGISTRATION” in “WORK SUPPORT” mode.
4. Follow the instruction on the CONSULT-III display.

Accelerator Pedal Released Position Learning

INFOID:0000000006243746

DESCRIPTION

Accelerator Pedal Released Position Learning is an operation to learn the fully released position of the accel-

erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time

the harness connector of the accelerator pedal position sensor or ECM is disconnected.

OPERATION PROCEDURE

1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.

Throttle Valve Closed Position Learning

INFOID:0000000006243747

DESCRIPTION

Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by

monitoring the throttle position sensor output signal. It must be performed each time the harness connector of

electric throttle control actuator or ECM is disconnected.

OPERATION PROCEDURE

1. Check that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.

Make sure that throttle valve moves during the above 10 seconds by confirming the operating sound.

Idle Air Volume Learning

INFOID:0000000006243748

DESCRIPTION

Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific

range. It must be performed under the following conditions:

• Each time electric throttle control actuator or ECM is replaced.

• Idle speed or ignition timing is out of specification.

PREPARATION

Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.

Learning will be cancelled if any of the following conditions are missed for even a moment.

• Battery voltage: More than 12.9 V (At idle)

• Engine coolant temperature: 70 - 100

°

C (158 - 212

°

F)

• Selector lever: P or N

• Electric load switch: OFF

(Air conditioner, headlamp, rear window defogger)

2011 Pathfinder

EC-26

< BASIC INSPECTION >

[VQ40DE]

INSPECTION AND ADJUSTMENT

On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is

started the headlamp will not illuminate.

• Steering wheel: Neutral (Straight-ahead position)

• Vehicle speed: Stopped

• Transmission: Warmed-up

- With CONSULT-III: Drive vehicle until “ATF TEMP SE” in “DATA MONITOR” mode of “A/T” system indicates

less than 0.9 V.

- Without CONSULT-III: Drive vehicle for 10 minutes.

OPERATION PROCEDURE

With CONSULT-III

1. Perform

EC-25, "Accelerator Pedal Released Position Learning"

.

2. Perform

EC-25, "Throttle Valve Closed Position Learning"

.

3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.

6. Touch “START” and wait 20 seconds.

7. Check that “CMPLT” is displayed on CONSULT-III screen. If “CMPLT” is not displayed, Idle Air Volume

Learning will not be carried out successfully. In this case, find the cause of the incident by referring to the

Diagnostic Procedure below.

8. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the

specifications.

Without CONSULT-III

NOTE:

•

It is better to count the time accurately with a clock.

•

It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has

a malfunction.

1. Perform

EC-25, "Accelerator Pedal Released Position Learning"

.

2. Perform

EC-25, "Throttle Valve Closed Position Learning"

.

3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully released, then turn ignition switch ON and wait 3 seconds.
7. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal it for approx. 20 seconds until the MIL stops blinking

and turns ON.

9. Fully release the accelerator pedal within 3 seconds after the MIL turns ON.
10. Start engine and let it idle.

ITEM

SPECIFICATION

Idle speed

625

±

50 rpm (in P or N position)

Ignition timing

15

±

5

°

BTDC (in P or N position)

2011 Pathfinder

INSPECTION AND ADJUSTMENT

EC-27

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11. Wait 20 seconds.

12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the

specifications.

13. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried

out successfully. In this case, find the cause of the incident by referring to the DIAGNOSTIC PROCE-

DURE below.

DIAGNOSTIC PROCEDURE

If idle air volume learning cannot be performed successfully, proceed as follows:

1.

Check that throttle valve is fully closed.

2.

Check PCV valve operation.

3.

Check that downstream of throttle valve is free from air leakage.

4.

When the above three items check out OK, engine component parts and their installation condi-

tion are questionable. Check and eliminate the cause of the incident.

It is useful to perform “TROUBLE DIAGNOSIS - SPECIFICATION VALUE”. Refer to

EC-86

.

5.

If any of the following conditions occur after the engine has started, eliminate the cause of the

incident and perform Idle Air Volume Learning again:

•

Engine stalls.

•

Incorrect idle.

ITEM

SPECIFICATION

Idle speed

625

±

50 rpm (in P or N position)

Ignition timing

15

±

5

°

BTDC (in P or N position)

SEC897C

2011 Pathfinder

EC-28

< BASIC INSPECTION >

[VQ40DE]

HOW TO SET SRT CODE

HOW TO SET SRT CODE

Description

INFOID:0000000006709450

OUTLINE

In order to set all SRTs, the self-diagnoses as in the “SRT ITEM” table must have been performed at least

once. Each diagnosis may require actual driving for a long period of time under various conditions.

SRT ITEM

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

• *1: Though displayed on the CONSULT-III screen, “HO2S HTR” is not SRT item.

• *2: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by

one based on the priority for models with CONSULT-III.

SRT SERVICE PROCEDURE

If a vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review

the flowchart diagnostic sequence, referring to the following flowchart.

SRT item

*1

(CONSULT-III indication)

Performance

Priority

*2

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

1

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

EGR/VVT SYSTEM

3

Intake value timing control function

P0011, P0021

2011 Pathfinder

HOW TO SET SRT CODE

EC-29

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SRT Set Driving Pattern

INFOID:0000000006709451

CAUTION:

JSBIA0400GB

2011 Pathfinder