Nissan Pathfinder (2012 year). Manual - part 314

INSPECTION AND ADJUSTMENT

EC-593

< BASIC INSPECTION >

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2. Rev engine between 2,000 and 3,000 rpm 2 or 3 times under no

load, then run engine at idle speed for approximately 1 minute.

3. Read idle speed in “DATA MONITOR” mode with CONSULT.

Refer to 

EC-596, "Idle Speed and Ignition Timing Check"

.

 Without CONSULT

1. Run engine at approximately 2,000 rpm for approximately 2 minutes under no load.

2. Rev engine between 2,000 and 3,000 rpm 2 or 3 times under no load, then run engine at idle speed for

approximately 1 minute.

3. Check idle speed.

Refer to 

EC-596, "Idle Speed and Ignition Timing Check"

.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 4.

4.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1. Stop engine.

2. Perform 

EC-597, "Accelerator Pedal Released Position Learning"

.

>> GO TO 5.

5.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-597, "Throttle Valve Closed Position Learning"

.

>> GO TO 6.

6.

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-597, "Idle Air Volume Learning"

.

Is Idle Air Volume Learning carried out successfully?

Yes or No

Yes

>> GO TO 7.

No

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

2. GO TO 4.

7.

CHECK TARGET IDLE SPEED AGAIN

 With CONSULT

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

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

Refer to 

EC-596, "Idle Speed and Ignition Timing Check"

.

 Without CONSULT

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

2. Check idle speed.

Refer to 

EC-596, "Idle Speed and Ignition Timing Check"

.

OK or NG

650 

±

 50 rpm (in P or N position)

PBIA8513J

650 

±

 50 rpm (in P or N position)

650 

±

 50 rpm (in P or N position)

650 

±

 50 rpm (in P or N position)

August 2012

2012 Pathfinder

EC-594

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INSPECTION AND ADJUSTMENT

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-749, "DTC Confirmation Procedure"

.

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

EC-745, "DTC Confirmation Procedure"

.

OK or NG

OK

>> GO TO 9.

NG

>> 1. Repair or replace malfunctioning part.

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,

but this is rare.)

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

SEC-10, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"

 (with intelligent key

system), 

SEC-120, "ECM RE-COMMUNICATING FUNCTION : 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-596, "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-597, "Accelerator Pedal Released Position Learning"

.

>> GO TO 12.

12.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-597, "Throttle Valve Closed Position Learning"

.

>> GO TO 13.

13.

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-597, "Idle Air Volume Learning"

.

Is Idle Air Volume Learning carried out successfully?

Yes or No

Yes

>> GO TO 14.

No

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

2. GO TO 4.

14.

CHECK TARGET IDLE SPEED AGAIN

 With CONSULT

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

15 

±

 5

°

BTDC (in P or N position)

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INSPECTION AND ADJUSTMENT

EC-595

< BASIC INSPECTION >

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

Refer to 

EC-596, "Idle Speed and Ignition Timing Check"

.

 Without CONSULT

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

2. Check idle speed.

Refer to 

EC-596, "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-596, "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-194, "Removal and Installation"

.

OK or NG

OK

>> GO TO 17.

NG

>> 1. Repair the timing chain installation. Refer to 

EM-193

.

2. GO TO 4.

17.

DETECT MALFUNCTIONING PART

Check the following.

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

EC-749, "DTC Confirmation Procedure"

.

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

EC-745, "DTC Confirmation 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, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"

 (with intelligent key

system), 

SEC-120, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"

 (without

intelligent key system).

>> GO TO 4.

19.

INSPECTION END

If ECM is replaced during this Basic Inspection procedure, perform 

EC-596, "Procedure After Replacing

ECM"

.

650 

±

 50 rpm (in P or N position)

650 

±

 50 rpm (in P or N position)

15 

±

 5

°

BTDC (in P or N position)

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EC-596

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INSPECTION AND ADJUSTMENT

>> INSPECTION END

Idle Speed and Ignition Timing Check

INFOID:0000000007358457

IDLE SPEED

 With CONSULT

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

 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:0000000007358458

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, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"

 (with intelli-

gent key system), 

SEC-120, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"

(without intelligent key system).

2. Perform 

EC-596, "VIN Registration"

.

3. Perform 

EC-597, "Accelerator Pedal Released Position Learning"

.

4. Perform 

EC-597, "Throttle Valve Closed Position Learning"

.

5. Perform 

EC-597, "Idle Air Volume Learning"

.

VIN Registration

INFOID:0000000007358459

DESCRIPTION

VIN Registration is a function of ECM 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

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INSPECTION AND ADJUSTMENT

EC-597

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 With CONSULT

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 instructions on the CONSULT display.

Accelerator Pedal Released Position Learning

INFOID:0000000007358460

DESCRIPTION

Accelerator Pedal Released Position Learning is a function of ECM to learn the fully released position of the

accelerator 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. Check 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:0000000007358461

DESCRIPTION

Throttle Valve Closed Position Learning is a function of ECM 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 con-

nector of the 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 wait at least 10 seconds.

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

Idle Air Volume Learning

INFOID:0000000007358462

DESCRIPTION

Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps engine idle speed within

the specific range. It must be performed under the following conditions:

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

• Idle speed or ignition timing is out of the specification.

PREPARATION

Before performing Idle Air Volume Learning, check 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 12.9V (At idle)

• Engine coolant temperature: 70 - 100

°

C (158 - 212

°

F)

• Selector lever position: P or N

• Electric load switch: OFF

(Air conditioner, headlamp, rear window defogger)

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

started the headlamp will not be illuminated.

• Steering wheel: Neutral (Straight-ahead position)

• Vehicle speed: Stopped

• Transmission: Warmed-up

- With CONSULT: Drive vehicle until “ATF TEMP SE 1” in “DATA MONITOR” mode of “A/T” system indicates

less than 0.9 V.

- Without CONSULT: Drive vehicle for 10 minutes.

OPERATION PROCEDURE

August 2012

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EC-598

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INSPECTION AND ADJUSTMENT

 With CONSULT

1. Perform 

EC-597, "Accelerator Pedal Released Position Learning"

.

2. Perform 

EC-597, "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 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 engine 2 or 3 times and check that idle speed and ignition timing are within the specifications.

 Without CONSULT

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-597, "Accelerator Pedal Released Position Learning"

.

2. Perform 

EC-597, "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. Check that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
7. Repeat the following procedure quickly 5 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 for approximately 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.
11. Wait 20 seconds.

12. Rev up engine 2 or 3 times and check that idle speed and ignition timing are within the specifications.

ITEM

SPECIFICATION

Idle speed

650 

±

 50 rpm (in P or N position)

Ignition timing

15 

±

 5

°

BTDC (in P or N position)

ITEM

SPECIFICATION

Idle speed

650 

±

 50 rpm (in P or N position)

Ignition timing

15 

±

 5

°

BTDC (in P or N position)

SEC897C

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INSPECTION AND ADJUSTMENT

EC-599

< BASIC INSPECTION >

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13. If idle speed and ignition timing are not within the specifications, Idle Air Volume Learning will not be car-

ried 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 per the following:

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 

EC-612, "Inspection Procedure"

.

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.

•

Erroneous idle.

Mixture Ratio Self-Learning Value Clear

INFOID:0000000007824621

DESCRIPTION

This describes how to erase the mixture ratio self-learning value. For the actual procedure, follow the instruc-

tions in “Diagnosis Procedure”.

OPERATION PROCEDURE

1.

START

With CONSULT

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

2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT.

3. Clear mixture ratio self-learning value by touching “CLEAR”.

With GST

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

2. Turn ignition switch OFF.

3. Disconnect mass air flow sensor harness connector.

4. Restart engine and let it idle for at least 5 seconds.

5. Stop engine and reconnect mass air flow sensor harness connector.

6. Select Service $03 with GST. Check DTC P0102 is detected.

7. Select Service $04 with GST to erase the DTC P0102.

>> END

August 2012

2012 Pathfinder

EC-600

< BASIC INSPECTION >

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HOW TO SET SRT CODE

HOW TO SET SRT CODE

Description

INFOID:0000000007799380

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”.

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

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

(CONSULT 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

August 2012

2012 Pathfinder