Nissan Teana J32. Manual — part 370
EC-18
< BASIC INSPECTION >
[VQ25DE, VQ35DE]
INSPECTION AND ADJUSTMENT
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.
• Erroneous idle.
>> INSPECTION END
MIXTURE RATIO SELF-LEARNING VALUE CLEAR
MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Description
INFOID:0000000003856459
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:0000000003856460
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-19
< FUNCTION DIAGNOSIS >
[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
FUNCTION DIAGNOSIS
ENGINE CONTROL SYSTEM
System Diagram
INFOID:0000000003856461
JMBIA1465GB
EC-20
< FUNCTION DIAGNOSIS >
[VQ25DE, VQ35DE]
ENGINE CONTROL SYSTEM
System Description
INFOID:0000000003856462
ECM performs various controls such as fuel injection control and ignition timing control.
Component Parts Location
INFOID:0000000003856463
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.
Cooling fan motor-2
6.
A/F sensor 1 (bank 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. Power valve actuator 2 (VQ35DE
models)
19. EVAP canister purge volume control
solenoid valve
20. Camshaft position sensor (PHASE)
(bank 1)
21. Ignition coil (with power transistor)
and spark plug (bank 1)
22. A/F sensor 1 (bank 1)
23. Fuel injector (bank 1)
24. VIAS control solenoid valve 1 and 2
(VQ35DE models)
25. Power valve actuator 1
JMBIA1373ZZ
ENGINE CONTROL SYSTEM
EC-21
< FUNCTION DIAGNOSIS >
[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
1.
Mass 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.
EVAP canister
: Vehicle front
1.
Knock sensor (bank 1)
2.
Knock sensor (bank 2)
3.
Knock sensor
: Vehicle front
JMBIA1374ZZ
JMBIA1375ZZ
JMBIA1376GB
JMBIA1377ZZ
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