Nissan Sentra Service Manual: Intake manifold runner control
INTAKE MANIFOLD RUNNER CONTROL : System Description
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
Intake manifold runner control valve has a valve portion in the intake passage of each cylinder.
While idling and during low engine coolant temperature, the intake manifold runner control valve closes. Thus the velocity of the air in the intake passage increases, promoting the vaporization of the fuel and producing a intake manifold runner in the combustion chamber.
Because of this operation, this system tends to increase the burning speed of the gas mixture, improve exhaust emission, and increase the stability in running conditions.
Also, except when idling and during low engine coolant temperature, this system opens the intake manifold runner control valve.
In this condition, this system tends to increase power by improving intake efficiency via reduction of intake flow resistance.
The intake manifold runner control valve is operated by the ECM.
Exhaust valve timing control
EXHAUST VALVE TIMING CONTROL : System
Description
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor ...
Intake manifold tuning system
INTAKE MANIFOLD TUNING SYSTEM : System
Description
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
This system switches the length of intake air path according to the
low-to-medium speed range or high spe ...
Other materials:
Removal and installation
EXHAUST SYSTEM
Exploded View
Sub muffler
Spring
Mounting rubber
Seal bearing
Catalyst shroud (upper)
Seal bearing
Exhaust front tube
Spring
Catalyst shroud (lower)
Clamp
Heated oxygen sensor 2
Ring gasket
Mounting rubber
Main muffler
Exhaust finisher (if equipped ...
Both side headlamps (lo) are not
turned on
Description
The headlamps (both sides) do not turn on in any lighting switch setting.
Diagnosis Procedure
1.Check combination switch (lighting and turn signal switch)
Check the combination switch (lighting and turn signal switch). Refer to
BCS-72, "Symptom Table" (with Intelligent
...
Warning/indicator lights and audible reminders
Anti-lock Braking System (ABS)
warning light
Brake warning light
Charge warning light
Door open warning light
Engine oil pressure warning
light
Low fuel warning light
Low tire pressure warning light
Low windshield-washer fluid
warning light
NISSAN Intelligent Key® lock
warni ...
