Nissan Murano Z51. Manual — part 501
EC-12
< BASIC INSPECTION >
[VQ35DE]
DIAGNOSIS AND REPAIR WORKFLOW
WORKSHEET SAMPLE
MTBL0017
INSPECTION AND ADJUSTMENT
EC-13
< BASIC INSPECTION >
[VQ35DE]
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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
.
For specification, refer to
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-
>> 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
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
.
• Check crankshaft position sensor (POS) and circuit. Refer to
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 >
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For procedure, refer to
EC-17, "IGNITION TIMING : Special Repair Requirement"
.
For specification, refer to
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-
.
>> 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
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
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
• Check crankshaft position sensor (POS) and circuit. Refer to
Is the inspection result normal?
YES
>> GO TO 18.
NO
>> Repair or replace malfunctioning part. Then GO TO 4.
18.
CHECK ECM FUNCTION
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