Nissan Murano Z51. Manual — part 503
EC-20
< BASIC INSPECTION >
[VQ35DE]
INSPECTION AND ADJUSTMENT
4.
CHECK IDLE SPEED AND IGNITION TIMING
Rev up the engine 2 or 3 times and check that idle speed and ignition timing are within the specifications.
For procedure, refer to
EC-16, "IDLE SPEED : Special Repair Requirement"
.
For specifications, refer to
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART-I
Check the following
• Check that throttle valve is fully closed.
• Check PCV valve operation.
• Check that downstream of throttle valve is free from air leakage.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace malfunctioning part.
6.
DETECT MALFUNCTIONING PART-II
Engine component parts and their installation condition are questionable. Check and eliminate the cause of
the incident.
It is useful to perform “TROUBLE DIAGNOSIS - SPECIFICATION VALUE”. Refer to
If any of the following conditions occur after the engine has started, eliminate the cause of the incident and
perform Idle Air Volume Learning again:
• Engine stalls.
• Incorrect idle.
>> INSPECTION END
MIXTURE RATIO SELF-LEARNING VALUE CLEAR
MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Description
INFOID:0000000005536483
This describes show to erase the mixture ratio self-learning value. For the actual procedure, follow the instruc-
tions in “Diagnosis Procedure”.
MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement
INFOID:0000000005536484
1.
START
With CONSULT-III
1.
Start engine and warm it up to normal operating temperature.
2.
Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-III.
3.
Clear mixture ratio self-learning value by touching “CLEAR”.
With GST
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF.
3.
Disconnect mass air flow sensor harness connector.
4.
Restart engine and let it idle for at least 5 seconds.
5.
Stop engine and reconnect mass air flow sensor harness connector.
6.
Select Service $03 with GST. Check that DTC P0102 is detected.
7.
Select Service $04 with GST to erase the DTC P0102.
>> END
ENGINE CONTROL SYSTEM
EC-21
< SYSTEM DESCRIPTION >
[VQ35DE]
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SYSTEM DESCRIPTION
ENGINE CONTROL SYSTEM
System Diagram
INFOID:0000000005536485
JMBIA1136GB
EC-22
< SYSTEM DESCRIPTION >
[VQ35DE]
ENGINE CONTROL SYSTEM
System Description
INFOID:0000000005536486
ECM performs various controls such as fuel injection control and ignition timing control.
Component Parts Location
INFOID:0000000005536487
1.
Intake valve timing control solenoid
valve (bank 1)
2.
Intake valve timing control solenoid
valve (bank 2)
3.
Electronic controlled engine mount
control solenoid valve
4.
Fuel injector (bank 2)
5.
A/F sensor 1 (bank 2)
6.
Cooling fan motor-2
7.
Ignition coil (with power transistor)
and spark plug (bank 2)
8.
Camshaft position sensor (PHASE)
(bank 2)
9.
Crankshaft position sensor (POS)
10. Engine coolant temperature sensor
11.
Cooling fan motor-1
12. ECM
13. Refrigerant pressure sensor
14. Battery current sensor
15. IPDM E/R
16. Mass air flow sensor (with intake air
temperature sensor)
17. Electric throttle control actuator
18. EVAP service port
19. Power valve actuator 2
20. EVAP canister purge volume control
solenoid valve
21. Camshaft position sensor (PHASE)
(bank 1)
22. Ignition coil (with power transistor)
and spark plug (bank 1)
23. A/F sensor 1 (bank 1)
24. Fuel injector (bank 1)
25. VIAS control solenoid valve 1 and 2
26. Power valve actuator 1
JMBIA1108ZZ
ENGINE CONTROL SYSTEM
EC-23
< SYSTEM DESCRIPTION >
[VQ35DE]
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1.
Mas air flow sensor (with intake air
temperature sensor)
2.
Electric throttle control actuator
: Vehicle front
1.
Ignition coil (with power transistor)
and spark plug (bank 1)
2.
Fuel injector (bank 1)
3.
Fuel injector (bank 2)
4.
Ignition coil (with power transistor)
and spark plug (bank 2)
5.
Knock sensor (bank 2)
6.
Knock sensor (bank 1)
: Vehicle front
1.
Crankshaft position sensor (POS)
2.
Camshaft position sensor (PHASE)
(bank 1)
3.
Camshaft position sensor (PHASE)
(bank 2)
: Vehicle front
JMBIA1109ZZ
JMBIA1110ZZ
JMBIA1114ZZ
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