Nissan Teana J32. Instruction — part 374
EC-34
< FUNCTION DIAGNOSIS >
[VQ25DE, VQ35DE]
MULTIPORT FUEL INJECTION SYSTEM
1.
A/F sensor 1 (bank 1) harness con-
nector
2.
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
1.
Electronic controlled engine mount
control solenoid valve
2.
VIAS control solenoid valve 1
3.
VIAS control solenoid valve 2
4.
EVAP canister purge volume control
solenoid valve
JMBIA1116ZZ
JMBIA1380ZZ
JMBIA1381GB
MULTIPORT FUEL INJECTION SYSTEM
EC-35
< FUNCTION DIAGNOSIS >
[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
1.
Electronic controlled engine mount
control solenoid valve
2.
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
1.
ASCD steering switch
2.
CANCEL switch
3.
RESUME/ACCELERATE switch
4.
SET/COAST switch
5.
MAIN switch
JMBIA1382GB
JMBIA1383ZZ
JMBIA1384ZZ
JMBIA1120ZZ
EC-36
< FUNCTION DIAGNOSIS >
[VQ25DE, VQ35DE]
MULTIPORT FUEL INJECTION SYSTEM
Component Description
INFOID:0000000003856468
1.
Fuel level sensor unit and fuel pump
harness connector
2.
Fuel pressure regulator
3.
Fuel level sensor unit and fuel pump
: Vehicle front
JMBIA1385ZZ
Component
Reference
A/F sensor 1
Accelerator pedal position sensor
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
Engine coolant temperature sensor
Fuel injector
Heated oxygen sensor 2
Intake air temperature sensor
Knock sensor
Mass air flow sensor
Park/neutral position switch
Power steering pressure sensor
Throttle position sensor
ELECTRIC IGNITION SYSTEM
EC-37
< FUNCTION DIAGNOSIS >
[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
ELECTRIC IGNITION SYSTEM
System Diagram
INFOID:0000000003856469
System Description
INFOID:0000000003856470
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
Ignition order: 1 - 2 - 3 - 4 - 5 - 6
The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the
engine. The ignition timing data is stored in the ECM.
The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) sig-
nal. Computing this information, ignition signals are transmitted to the power transistor.
During the following conditions, the ignition timing is revised by the ECM according to the other data stored in
the ECM.
• At starting
• During warm-up
• At idle
• At low battery voltage
• During acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
JMBIA1493GB
Sensor
Input Signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*
2
Piston position
Ignition timing
control
Ignition coil
(with power transistor)
Camshaft position sensor (PHASE)
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor
Engine coolant temperature
Throttle position sensor
Throttle position
Accelerator pedal position sensor
Accelerator pedal position
Battery
Battery voltage*
2
Knock sensor
Engine knocking
TCM (VQ35DE engine)
Park/neutral position (PNP) switch (VQ25DE engine)
Gear position
ABS actuator and electric unit (control unit)
Vehicle speed*
1
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