Nissan Murano Z51. Manual - part 501

EC-12

< BASIC INSPECTION >

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DIAGNOSIS AND REPAIR WORKFLOW

WORKSHEET SAMPLE

MTBL0017

INSPECTION AND ADJUSTMENT

EC-13

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INSPECTION AND ADJUSTMENT

BASIC INSPECTION

BASIC INSPECTION : Special Repair Requirement

INFOID:0000000005536468

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.

-

Head lamp 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.
Check that engine stays below 1,000 rpm.

5.

Run engine at approximately 2,000 rpm for approximately 2 min-
utes under no load.

6.

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

Are any DTCs detected?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

REPAIR OR REPLACE

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

>> GO TO 3

3.

CHECK TARGET IDLE SPEED

1.

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

SEF983U

SEF976U

SEF977U

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-16, "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-18, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-

ment"

.

>> GO TO 5.

5.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-18, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 6.

6.

PERFORM IDLE AIR VOLUME LEARNING

Perform 

EC-18, "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-16, "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-259, "Diagnosis Procedure"

.

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

EC-255, "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.

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INSPECTION AND ADJUSTMENT

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For procedure, refer to 

EC-17, "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-18, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-

ment"

.

>> GO TO 12.

12.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform 

EC-18, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 13.

13.

PERFORM IDLE AIR VOLUME LEARNING

Perform 

EC-18, "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-16, "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-17, "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-259, "Diagnosis Procedure"

.

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

EC-255, "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