Nissan Maxima. Manual - part 383

EC-16

< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

2. Check ignition timing with a timing light.

For procedure, refer to 

EC-19, "IGNITION TIMING : Special Repair Requirement"

.

For specification, refer to 

EC-596, "Ignition Timing"

.

Is the inspection result normal?

YES

>> GO TO 19.

NO

>> GO TO 11.

11.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1. Stop engine.

2. Perform 

EC-20, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-

ment"

.

>> GO TO 12.

12.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 13.

13.

PERFORM IDLE AIR VOLUME LEARNING

Perform 

EC-21, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

.

Is Idle Air Volume Learning carried out successfully?

YES

>> GO TO 14.

NO

>> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.

14.

CHECK TARGET IDLE SPEED AGAIN

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

2. Check idle speed.

For procedure, refer to 

EC-19, "IDLE SPEED : Special Repair Requirement"

.

For specification, refer to 

EC-596, "Idle Speed"

.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> GO TO 17.

15.

CHECK IGNITION TIMING AGAIN

1. Run engine at idle.

2. Check ignition timing with a timing light.

For procedure, refer to 

EC-19, "IGNITION TIMING : Special Repair Requirement"

.

For specification, refer to 

EC-596, "Ignition Timing"

.

Is the inspection result normal?

YES

>> GO TO 19.

NO

>> GO TO 16.

16.

CHECK TIMING CHAIN INSTALLATION

Check timing chain installation. Refer to 

EM-64, "Removal and Installation"

.

Is the inspection result normal?

YES

>> GO TO 17.

NO

>> 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-301, "Diagnosis Procedure"

.

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

EC-297, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 18.

NO

>> 1. Repair or replace malfunctioning part.

INSPECTION AND ADJUSTMENT

EC-17

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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

EC-17, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

.

>> GO TO 4.

19.

INSPECTION END

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

Yes

>> Go to 

EC-17, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair

Requirement"

.

No

>> INSPECTION END

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000010094773

When replacing ECM, the following procedure must be performed. (For details, refer to 

EC-17, "ADDITIONAL

SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

.)

PROGRAMMING OPERATION

NOTE:

After replacing with a blank ECM, programming is required to write ECM information. Be sure to follow the pro-

cedure to perform the programming.

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement

INFOID:0000000010094774

1.

SAVE ECM DATA

With CONSULT

1. Turn ignition switch OFF.

2. Reconnect all harness connectors disconnected.

3. Turn ignition switch ON.

4. Select “SAVING DATA FOR REPLC CPU” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

5. Follow the instruction of CONSULT display.

NOTE:

• Necessary data in ECM is copied and saved to CONSULT.

• Go to Step 2 regardless of with or without success in saving data.

>> GO TO 2.

2.

CHECK ECM PART NUMBER

Check ECM part number to see whether it is blank ECM or not.

NOTE:

• Part number of blank ECM is 23703 - 

×××××.

• Check part number when ordering ECM or the one included in the label on the container box.
Is the ECM a blank ECM?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

SAVE ECM PART NUMBER

Read out the part number from the old ECM and save the number, following the programming instructions.

Refer to CONSULT Operation Manual.

NOTE:

• The ECM part number is saved in CONSULT.

EC-18

< BASIC INSPECTION >

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INSPECTION AND ADJUSTMENT

• Even when ECM part number is not saved in CONSULT, go to 4.

>> GO TO 4.

4.

PERFORM ECM PROGRAMMING

After replacing ECM, perform the ECM programming. Refer to CONSULT Operation Manual.

NOTE:

During programming, maintain the following conditions:

• Ignition switch: ON

• Electric load: OFF

• Brake pedal: Not depressed

• Battery voltage: 12 – 13.5 V (Be sure to check the value of battery voltage by selecting “BATTERY VOLT” in

“Data monitor” of CONSULT.)

>> GO TO 6.

5.

REPLACE ECM

Replace ECM.

>> GO TO 6.

6.

PERFORM INITIALIZATION OF IVIS (NATS) SYSTEM AND REGISTRATION OF ALL IVIS (NATS) IGNI-

TION KEY IDS
Refer to 

SEC-9, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"

.

>> GO TO 7.

7.

CHECK ECM DATA STATUS

Check if the data is successfully copied from the ECM at Step 1 (before replacement) and saved in CONSULT.
Is the data saved successfully?

YES

>> GO TO 8.

NO

>> GO TO 9.

8.

WRITE ECM DATA

With CONSULT

1. Select “WRITING DATA FOR REPLC CPU” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

2. Follow the instruction of CONSULT display.

NOTE:

The data saved by “SAVING DATA FOR REPLC CPU” is written to ECM.

>> GO TO 10.

9.

PERFORM VIN REGISTRATION

Refer to 

EC-20, "VIN REGISTRATION : Special Repair Requirement"

.

>> GO TO 10.

10.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

Perform Accelerator Pedal Released Position Learning. Refer to 

EC-20, "ACCELERATOR PEDAL

RELEASED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 11.

11.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform Throttle Valve Closed Position Learning. Refer to 

EC-21, "THROTTLE VALVE CLOSED POSITION

LEARNING : Special Repair Requirement"

.

INSPECTION AND ADJUSTMENT

EC-19

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>> GO TO 12.

12.

PERFORM IDLE AIR VOLUME LEARNING

Perform Idle Air Volume Learning. Refer to 

EC-21, "IDLE AIR VOLUME LEARNING : Special Repair Require-

ment"

.

>> GO TO 13.

13.

PERFORM EXHAUST VALVE TIMING CONTROL LEARNING

Perform exhaust valve timing control learning. Refer to 

EC-23, "EXHAUST VALVE TIMING CONTROL

LEARNING : Special Repair Requirement"

.

>> END

IDLE SPEED
IDLE SPEED : Description

INFOID:0000000010094775

This describes how to check the idle speed. For the actual procedure, follow the instructions in “BASIC

INSPECTION”.

IDLE SPEED : Special Repair Requirement

INFOID:0000000010094776

1.

CHECK IDLE SPEED

With CONSULT

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

With GST

Check idle speed with Service $01 of GST.

>> INSPECTION END

IGNITION TIMING
IGNITION TIMING : Description

INFOID:0000000010094777

This describes how to check the ignition timing. For the actual procedure, follow the instructions in “BASIC

INSPECTION”.

IGNITION TIMING : Special Repair Requirement

INFOID:0000000010094778

1.

CHECK IGNITION TIMING

1. Attach timing light to loop wires as shown.

A

: Timing light

: Vehicle front

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