Nissan Sentra Owners Manual: Controls
Fan control dial
The fan control dial turns the fan on and off, and controls fan speed.
Air flow control buttons
The air flow control buttons allow you to select the air flow outlets.
MAX — Air flows from center and side
A/Cvents with maximum cooling.
— Air flows from center and side
vents.
— Air flows from center and side
vents and foot outlets.
— Air flows mainly from foot
outlets.
— Air flows from defroster
outlets
and foot outlets.
— Air flows mainly from
defroster
outlets.
Temperature control dial
The temperature control dial allows you to adjust the temperature of the outlet air. To lower the temperature, turn the dial to the left. To increase the temperature, turn the dial to the right.
Air recirculation button
On position (Indicator light on): Interior air is recirculated inside the vehicle.
Press the 
button to the ON
position when:
- driving on a dusty road.
- to prevent traffic fumes from entering passenger compartment.
- for maximum cooling when using the air conditioner.
The air recirculation function does not operate
when in the 
or
air flow modes.
Off position (Indicator light off):
Outside air is drawn into the passenger compartment and distributed through the selected outlet.
Use the off position for normal heater or air conditioner operation.
Air conditioner
button (if so
equipped)
Start the engine, turn the fan control dial to the desired position and press the button to turn on the air conditioner. The indicator light comes on when the air conditioner is operating.
To turn off the air conditioner, press the button again.
The air conditioner cooling function operates only when the engine is running.
Rear window and outside mirror (if so equipped) defroster switch
For more information about the rear window and outside mirror (if so equipped) defroster switch, see “Rear window and outside mirror (if so equipped) defroster switch” in the “Instruments and controls” section of this manual.
Heater and Air Conditioner (manual) (if so equipped)
WARNING
The air conditioner cooling function operates
only when the engine is running.
Do not leave children or adults who would
normally require the assistance of others
al ...
Heater operation
This mode is used to direct heated air to the foot
outlets. Some air also flows from the defrost
outlets and the side vent outlets.
Press the button to the OFF
position
for normal heating. ...
Other materials:
A/c auto amp. Connection recognition signal circuit
Description
A/c auto amp. Transmits the a/c auto amp. Connection recognition signal to
the combination meter
Diagnosis procedure (with manual a/c)
Regarding wiring diagram information, refer to mwi-28, "wiring diagram".
1.Check a/c auto amp. Connection recognition signal
Turn ig ...
Increasing fuel economy
Keep your engine tuned up.
Follow the recommended scheduled maintenance.
Keep the tires inflated to the correct pressure.
Low tire pressure increases tire wear
and lowers fuel economy.
Keep the wheels in correct alignment. Improper
alignment increases tire wear and
lowers fuel eco ...
P0171 Fuel injection system function
DTC Logic
DTC DETECTION LOGIC
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture
ratio can be brought closely to the
theoretical mixture ratio based on the mixture ratio feedback signal from the
A/F sensors 1. The ECM calculates
the necessary compensation to correct th ...