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:
Cleaning interior
This vehicle has new and unique surfaces on the
center console and door pull finishers. If cleaning
is required use mild soap and water. However if
mild soap and water won’t clean the center console
and door pull finishers, use NISSAN Vinyl
and Leather Cleaner (or equivalent).
Occasionally ...
Overdrive control switch
Component Function Check
1.CHECK SPORT INDICATOR LAMP FUNCTION
Check OD OFF indicator lamp turns ON for approx. 2 seconds when ignition
switch turns ON.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Go to TM-239, "Diagnosis Procedure".
2.CHECK SPORT MODE SW ...
Air conditioner operation (if so equipped)
Start the engine, turn the fan control dial to the
desired position, and press the
button to
activate the air conditioner. When the air conditioner
is on, cooling and dehumidifying functions
are added to the heater operation.
The air conditioner cooling function operates
only whe ...