Nissan Altima HL32 Hybrid. Manual - part 263

 

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Nissan Altima HL32 Hybrid. Manual - part 263

 

 

EC-36

< FUNCTION DIAGNOSIS >

[QR25DE]

MULTIPORT FUEL INJECTION SYSTEM

Crankshaft position sensor (POS)

EC-251, "Description"

Engine coolant temperature sensor

EC-166, "Description"

Fuel injector

EC-237, "Description"

Heated oxygen sensor 2

EC-133, "Description"

Intake air temperature sensor

EC-161, "Description"

Knock sensor

EC-249, "Description"

Mass air flow sensor

EC-144, "Description"

Throttle position sensor

EC-169, "Description"

Vehicle speed sensor

EC-310, "Description"

Component

Reference

ELECTRIC IGNITION SYSTEM

EC-37

< FUNCTION DIAGNOSIS >

[QR25DE]

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ELECTRIC IGNITION SYSTEM

System Diagram

INFOID:0000000004211326

System Description

INFOID:0000000004211327

INPUT/OUTPUT SIGNAL CHART

*: This signal is sent to the ECM through CAN communication line.

SYSTEM DESCRIPTION

Firing order: 1 - 3 - 4 - 2 

JMBIA0458GB

Sensor

Input Signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)

Engine speed
Piston position

Ignition timing 
control

Ignition coil (with power transis-
tor)

Camshaft position sensor (PHASE)

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Throttle position sensor

Throttle position

Battery

Battery voltage

Knock sensor

Engine knocking

Brake ECU

Vehicle speed*

Hybrid vehicle control ECU

Vehicle speed*

Accelerator pedal position*

Shift position*

Engine operation command*
(Engine start request, Engine idle 
request, Fuel cut request, Engine 
power request, Engine speed re-
quest, etc.)

EC-38

< FUNCTION DIAGNOSIS >

[QR25DE]

ELECTRIC IGNITION SYSTEM

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

operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.

The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.

Component Parts Location

INFOID:0000000004362519

ALBIA0138ZZ

ELECTRIC IGNITION SYSTEM

EC-39

< FUNCTION DIAGNOSIS >

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1.

Intake valve timing control solenoid 
valve

2.

Ignition coil (with power transistor) 
and spark plug

3.

Knock sensor,
Crankshaft position sensor (POS)

4.

Air fuel ratio (A/F) sensor 1

5.

Camshaft position sensor (PHASE)

6.

Engine coolant temperature sensor

7.

ECM

8.

Refrigerant pressure sensor

9.

IPDM E/R

10. Mass air flow sensor (with intake 

temperature sensor)

11. EVAP service port

12. Electric throttle control actuator (with 

built in throttle position sensor and 
throttle control motor)

13. EVAP canister purge volume control 

solenoid valve

14. Fuel injector

1.

Throttle valve

2.

Electric throttle control actuator

3.

Electric throttle control actuator har-
ness connector

4.

EVAP service port

5.

EVAP canister purge volume control 
solenoid valve

6.

Intake manifold collector

7.

ECM

8.

Intake valve timing control solenoid 
valve

: Vehicle front

ALBIA0160ZZ

 

 

 

 

 

 

 

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