NISSAN TEANA 2008 Service Manual

EC-70
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
ELECTRONIC CONTROLLED ENGINE MOUNT
The ECM controls the engine mount operation corresponding to the engine speed. The control system has a
2-step control [Soft/Hard]
Component Parts LocationINFOID:0000000003860670
Vehicle condition Engine mount control
Engine speed: Below 950 rpm Soft
Engine speed: Above 950 rpm Hard
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 valve20. Camshaft position sensor (PHASE)
(bank 1)21. Ignition coil (with power transistor)
and spark plug (bank 1)
JMBIA1373ZZ

ELECTRONIC CONTROLLED ENGINE MOUNT
EC-71
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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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
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

EC-72
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
ELECTRONIC CONTROLLED ENGINE MOUNT
1. Crankshaft position sensor (POS) 2. Camshaft position sensor (PHASE)
(bank 2)3. Camshaft position sensor (PHASE)
(bank 1)
: Vehicle front
1. Refrigerant pressure sensor 2. Battery current sensor
: Vehicle front
1. ECM 2. Fuel pump fuse 3. IPDM E/R
: Vehicle front
JMBIA1377ZZ
JMBIA1378ZZ
JMBIA1379ZZ

ELECTRONIC CONTROLLED ENGINE MOUNT
EC-73
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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PBIB1686E
1. A/F sensor 1 (bank 1) harness con-
nector2. A/F sensor 1 (bank 1) 3. A/F sensor 1 (bank 2) harness con-
nector
4. A/F sensor 1 (bank 2)
: Vehicle front
1. HO2S2 (bank 1) 2. HO2S2 (bank 2) 3. HO2S2 (bank 2) harness connector
4. Tie-rod (RH) 5. Power steering pressure sensor 6. HO2S2 (bank 1) harness connector
: Vehicle front
JMBIA1116ZZ
JMBIA1380ZZ

EC-74
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
ELECTRONIC CONTROLLED ENGINE MOUNT
1. Electronic controlled engine mount
control solenoid valve2. VIAS control solenoid valve 1 3. VIAS control solenoid valve 2
4. EVAP canister purge volume control
solenoid valve
1. Electronic controlled engine mount
control solenoid valve2. VIAS control solenoid valve 3. EVAP canister purge volume control
solenoid valve
1. Intake valve timing control solenoid
valve (bank 1)2. Intake valve timing control solenoid
valve (bank 2)3. Data link connector
1. Stop lamp switch 2. ASCD brake switch 3. Accelerator pedal position sensor
JMBIA1381GB
JMBIA1382GB
JMBIA1383ZZ
JMBIA1384ZZ

ELECTRONIC CONTROLLED ENGINE MOUNT
EC-75
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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Component DescriptionINFOID:0000000003856489
1. ASCD steering switch 2. CANCEL switch 3. RESUME/ACCELERATE switch
4. SET/COAST switch 5. MAIN switch
1. Fuel level sensor unit and fuel pump
harness connector2. Fuel pressure regulator 3. Fuel level sensor unit and fuel pump
: Vehicle front
JMBIA1120ZZ
JMBIA1385ZZ
Component Reference
Camshaft position sensor (PHASE)EC-222, "
Description"
Crankshaft position sensor (POS)EC-218, "Description"
Electronic controlled engine mount control solenoid valveEC-331, "Description"

EC-76
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION SYSTEM
System DiagramINFOID:0000000003949755
System DescriptionINFOID:0000000003949756
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
JMBIA1524GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed*
1
Piston position
EVAP canister
purge flow controlEVAP canister purge vol-
ume control solenoid valve Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Battery
Battery voltage*
1
ABS actuator and electric unit (control unit)
Vehicle speed*2

EVAPORATIVE EMISSION SYSTEM
EC-77
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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SYSTEM DESCRIPTION
The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and
idling.
EVAPORATIVE EMISSION LINE DRAWING
JMBIA1464GB

EC-78
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
EVAPORATIVE EMISSION SYSTEM
1. Intake manifold 2. EVAP canister purge volume control
solenoid valve
A. From EVAP canister
: Vehicle front
JMBIA1393ZZ

EVAPORATIVE EMISSION SYSTEM
EC-79
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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NOTE:
Do not use soapy water or any type of solvent while installing vacuum hose or purge hoses.
1. EVAP canister A. To previous figure B. To/From B in this figure
: Vehicle front
JMBIA1394ZZ