Nissan Altima L32. Instruction — part 362

ENGINE CONTROL SYSTEM

EC-569

< FUNCTION DIAGNOSIS >

[QR25DE EXCEPT FOR CALIFORNIA]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

FUNCTION DIAGNOSIS

ENGINE CONTROL SYSTEM

System Diagram

INFOID:0000000004349600

JMBIA0161GB

EC-570

< FUNCTION DIAGNOSIS >

[QR25DE EXCEPT FOR CALIFORNIA]

ENGINE CONTROL SYSTEM

System Description

INFOID:0000000004349601

ECM performs various controls such as fuel injection control and ignition timing control.

Component Parts Location

INFOID:0000000004349602

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.

Park/neutral position (PNP) switch

8.

ECM

9.

Refrigerant pressure sensor

10. Battery current sensor

11. IPDM E/R

12. Mass air flow sensor (with intake

temperature sensor)

13. EVAP service port

14. Electric throttle control actuator

(with built in throttle position sensor
and throttle control motor)

15. EVAP canister purge volume control

solenoid valve

16. Fuel injector

17. Power steering pressure sensor

ALBIA0094ZZ

ENGINE CONTROL SYSTEM

EC-571

< FUNCTION DIAGNOSIS >

[QR25DE EXCEPT FOR CALIFORNIA]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

1.

Battery

2.

Fuel pump fuse (15A)

3.

IPDM E/R

4.

Brake master cylinder

5.

Engine ground

6.

Air cleaner assembly

7.

Mass air flow sensor (with intake air
temperature sensor)

8.

Radiator hose (upper)

9.

Engine coolant temperature sensor

10. Intake air duct

11. Camshaft position sensor (PHASE)

12. Tie rod (RH)

13. Power steering pressure sensor

14. Knock sensor

15. Engine oil cooler

16. Crankshaft position sensor (POS)

17. Drive shaft (RH)

: Vehicle front

ALBIA0091ZZ

EC-572

< FUNCTION DIAGNOSIS >

[QR25DE EXCEPT FOR CALIFORNIA]

ENGINE CONTROL SYSTEM

BBIA0296E

1.

Exhaust manifold cover

2.

Air fuel ratio (A/F) sensor 1

3.

Heated oxygen sensor 2
(This illustration is a view from under
vehicle.)

4.

Engine oil pan

: Vehicle front

ALBIA0068ZZ