Nissan Teana J32. Manual - 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

EC-163, "Description"

Accelerator pedal position sensor

EC-304, "Description"

Camshaft position sensor (PHASE)

EC-222, "Description"

Crankshaft position sensor (POS)

EC-218, "Description"

Engine coolant temperature sensor

EC-157, "Description"

Fuel injector

EC-334, "Description"

Heated oxygen sensor 2

EC-178, "Description"

Intake air temperature sensor

EC-154, "Description"

Knock sensor

EC-215, "Description"

Mass air flow sensor

EC-149, "Description"

Park/neutral position switch

EC-245, "Description"

Power steering pressure sensor

EC-236, "Description"

Throttle position sensor

EC-160, "Description"

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