Nissan Frontier D40. Manual - part 444

 

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Nissan Frontier D40. Manual - part 444

 

 

DIAGNOSIS AND REPAIR WORKFLOW

EC-467

< BASIC INSPECTION >

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Worksheet Sample

LEC031A

EC-468

< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

INSPECTION AND ADJUSTMENT

Basic Inspection

INFOID:0000000005273464

1.

INSPECTION START

1.

Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.

2.

Open engine hood and check the following:

-

Harness connectors for improper connections

-

Wiring harness for improper connections, pinches and cut

-

Vacuum hoses for splits, kinks and improper connections

-

Hoses and ducts for leakage

-

Air cleaner clogging

-

Gasket

3.

Check that electrical or mechanical loads are not applied.

-

Headlamp switch is OFF.

-

Air conditioner switch is OFF.

-

Rear window defogger switch is OFF.

-

Steering wheel is in the straight-ahead position, etc.

4.

Start engine and warm it up until engine coolant temperature
indicator points to the middle of gauge.
Ensure engine stays below 1,000 rpm.

5.

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

6.

Check that no DTC is displayed with CONSULT-III or GST.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2.

REPAIR OR REPLACE

Repair or replace components as necessary according to corresponding Diagnostic Procedure.

>> GO TO 3.

3.

CHECK TARGET IDLE SPEED

 With CONSULT-III

1.

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

SEF983U

SEF976U

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INSPECTION AND ADJUSTMENT

EC-469

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2.

Rev engine (2,000 to 3,000 rpm) two or three times under no
load, then run engine at idle speed for about 1 minute.

3.

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

EC-472, "Idle Speed and Ignition Timing Check"

.

 Without CONSULT-III

1.

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

2.

Rev engine (2,000 to 3,000 rpm) two or three times under no load, then run engine at idle speed for about
1 minute.

3.

Check idle speed. Refer to 

EC-472, "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-473, "Accelerator Pedal Released Position Learning"

.

>> GO TO 5.

5.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perfor

EC-473, "Throttle Valve Closed Position Learning"

.

>> GO TO 6.

6.

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-473, "Idle Air Volume Learning"

.

Is Idle Air Volume Learning carried out successfully?

Yes or No

Yes

>> GO TO 7.

No

>> 1.

Follow the instruction of Idle Air Volume Learning.

2.

GO TO 4.

7.

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-472, "Idle Speed and Ignition Timing Check"

.

PBIA8513J

M/T: 625 

±

 50 rpm (in Neutral position)

A/T: 625 

±

 50 rpm (in P or N position)

M/T: 625 

±

 50 rpm (in Neutral position)

A/T: 625

±

 50 rpm (in P or N position)

M/T: 625 

±

 50 rpm (in Neutral position)

A/T: 625

±

 50 rpm (in P or N position)

EC-470

< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

 Without CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.
Refer to 

EC-472, "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-672, "Diagnosis Procedure"

.

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

EC-667, "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-7, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

.

>> GO TO 4.

10.

CHECK IGNITION TIMING

1.

Run engine at idle.

2.

Check ignition timing with a timing light.
Refer to 

EC-472, "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-473, "Accelerator Pedal Released Position Learning"

.

>> GO TO 12.

12.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-473, "Throttle Valve Closed Position Learning"

.

>> GO TO 13.

13.

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-473, "Idle Air Volume Learning"

.

Is Idle Air Volume Learning carried out successfully?

M/T: 625 

±

 50 rpm (in Neutral position)

A/T: 625 

±

 50 rpm (in P or N position)

M/T: 15

±

 5

°

 BTDC (in Neutral position)

A/T: 15 

±

 5

°

 BTDC (in P or N position)

BBIA0531E

 

 

 

 

 

 

 

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