Nissan Murano. Instruction — part 476

EC-14

< BASIC INSPECTION >

[VQ35DE]

INSPECTION AND ADJUSTMENT

2.

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

3.

Check idle speed.
For procedure, refer to

EC-18, "IDLE SPEED : Special Repair

Requirement"

.

For specification, refer to

EC-536, "Idle Speed"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 4.

4.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1.

Stop engine.

2.

Perform

EC-19, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-

ment"

.

>> GO TO 5.

5.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform

EC-19, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 6.

6.

PERFORM IDLE AIR VOLUME LEARNING

Perform

EC-20, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

.

Is Idle Air Volume Learning carried out successfully?

YES

>> GO TO 7.

NO

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

7.

CHECK IDLE SPEED AGAIN

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.
For procedure, refer to

EC-18, "IDLE SPEED : Special Repair Requirement"

.

For specification, refer to

EC-536, "Idle Speed"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

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

EC-280, "Diagnosis Procedure"

.

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

EC-276, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace malfunctioning part. Then 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-8, "ECM RECOMMUNICATING FUNCTION : Special Repair Requirement"

.

>> GO TO 4.

10.

CHECK IGNITION TIMING

1.

Run engine at idle.

2.

Check ignition timing with a timing light.

PBIA8513J

INSPECTION AND ADJUSTMENT

EC-15

< BASIC INSPECTION >

[VQ35DE]

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For procedure, refer to

EC-18, "IGNITION TIMING : Special Repair Requirement"

.

For specification, refer to

EC-536, "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-19, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-

ment"

.

>> GO TO 12.

12.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform

EC-19, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 13.

13.

PERFORM IDLE AIR VOLUME LEARNING

Perform

EC-20, "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 IDLE SPEED AGAIN

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.
For procedure, refer to

EC-18, "IDLE SPEED : Special Repair Requirement"

.

For specification, refer to

EC-536, "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-18, "IGNITION TIMING : Special Repair Requirement"

.

For specification, refer to

EC-536, "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-94, "Disassembly and Assembly"

.

Is the inspection result normal?

YES

>> GO TO 17.

NO

>> Repair the timing chain installation. Then GO TO 4.

17.

DETECT MALFUNCTIONING PART

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

EC-280, "Diagnosis Procedure"

.

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

EC-276, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 18.

NO

>> Repair or replace malfunctioning part. Then GO TO 4.

18.

CHECK ECM FUNCTION

EC-16

< BASIC INSPECTION >

[VQ35DE]

INSPECTION AND ADJUSTMENT

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-16, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

.

>> GO TO 4.

19.

INSPECTION END

If ECM is replaced during this BASIC INSPECTION procedure, perform

EC-16, "ADDITIONAL SERVICE

WHEN REPLACING CONTROL UNIT : Special Repair Requirement"

.

>> INSPECTION END

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000009719800

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

EC-16, "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:0000000009719801

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

>> GO TO 4.

INSPECTION AND ADJUSTMENT

EC-17

< BASIC INSPECTION >

[VQ35DE]

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4.

PERFORM ECM PROGRAMMING

After replacing ECM, perform the ECM programming. Refer to CONSULT Operation Instruction.
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-8, "ECM RECOMMUNICATING 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-19, "VIN REGISTRATION : Special Repair Requirement"

.

>> GO TO 10.

10.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

Refer to

EC-19, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 11.

11.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to

EC-19, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 12.

12.

PERFORM IDLE AIR VOLUME LEARNING

Refer to

EC-20, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

.