heater HONDA CIVIC 1991 Owners Manual

Windshield Wipers/Washer/Defogger (cont'd)

CAUTION:
Do not use radiator antifreeze in the windshield washer; it will
damage the paint.
Do not use a vinegar/water combination in the windshield
washer; it will damage the pump. Prolonged operation of the washer without fluid may damage
the pump.
In freezing weather, warm the windshield with the defrosters
before using the washer. This will help prevent icing which could
seriously impair visibility.

Rear Window Wiper/Washer (DX/Si Hatchback)

Switch to "ON" to activate the rearwiper. Turn and hold the switch one more step clockwise to " "
to activate the washer and wiper; or turn and hold the switch one step
counterclockwise from "OFF" to
activate the washer only. The rear
washer uses the same fluid reser-

voir as the front washer.

Rear Window Defogger
Push the switch to turn the de-
fogger on or off. The indicator will light when the defogger is on.
The switch will turn off automat- ically 25 minutes after it is turned on.

CAUTION:

When cleaning the inside of the rear window, be careful not to
damage the printed heater wireson the rear window. Wipe the
window horizontally along the wires, not up and down.
INDICATOR

WIPER
WASHER

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Heating and Cooling

The vents, heater and air conditioner are combined in one system;
adjusting four basic controls to different settings can provide a full range of interior temperatures for safe and comfortable driving.
Air conditioner: optional

Ventilation

The flow-through ventilation system can provide fresh air to the
interior when the car is moving or stopped, even with the windows

closed.

NOTE:

For proper air flow, the flow-through vents must not be covered.Keep the air inlet at the base of the windshield free of leaves or
other debris.
You can adjust the controls to direct cool or warm outside air
throughout the car for defogging windows, heating, or cooling by turning on the fan.

(cont'd)

AIR OUTLET

AIR INLETProCarManuals.comMain Menu s t

Heating and Cooling (cont'd)
Dash Vents
The corner vents can be used for flow-through ventilation, or for heating and air conditioning. When the car is moving, the driver's
corner vent can also route fresh air directly from the outside bysliding the corner vent lever below it to the right and shutting it off
from the heater and air conditioner system.
The louvers in the corner and center vents can be tilted up or down and right or left, to change the direction of air flow.

SIDE DEFROSTER
OUTLET
CORNER VENT

WINDSHIELD DEFROSTER
OUTLETS

CENTER VENTS

CORNER
VENT
FRONT FLOOR

OUTLETS

REAR FLOOR OUTLETS

(Sedan only)

CORNER VENT

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Fan Switch

Switch the fan to low ( 1 ), medium ( 2 ), medium high ( 3 ) or high
speed ( 4 ), to circulate warm, cool, or outside air, depending on
where the temperature control dial and function levers are set.

Function Lever

Slide the lever right or left to direct outside air or recirculated (inside) air to and from the heater, air conditioner and vents.

Temperature Control Dial
Turn the dial clockwise to make air warmer with the function lever in any position.

Air Conditioner Switch (optional)

With the fan on, push the A/C switch to operate the air conditioner;
the indicator light will come on. Push the switch again to turn the air conditioner off.

(cont'd)

What the Controls Do:

TEMPERATURECONTROL DIAL RECIRCULATION

LEVER
FAN SWITCH

FUNCTION LEVER AIR CONDITIONER SWITCH
and INDICATOR LIGHT

(optional)ProCarManuals.comMain Menu s t

Heating and Cooling (cont'd)
Recirculation Lever
Sliding the lever from the position to the position
shuts off outside air and recirculates the air inside the car. If the
heater or air conditioner is on, and you want to warm up or cool
down the interior more quickly, or keep smoke or dust out of the car without losing the heat or cool function, simply slide the lever to the position.

NOTE:
The windows may become fogged if the system is in the po-
sition for an extended period of time with the air conditioner off. As soon as the interior is warmed, slide the lever to the posi-

tion.

How to Use the Controls

To Ventilate

Turn the temperature control dial counterclockwise, slide the recirculation lever to the position and the function lever to
the position. Switch the fan on and outside air will flow
through the corner and center vents. To change air distribution,
slide the function lever to the position, and outside air will
also flow from the floor level outlet at the heater.
TEMPERATURE
CONTROL DIAL RECIRCULATION
LEVER
FAN SWITCH

FUNCTION LEVER AIR CONDITIONER
SWITCH (optional)ProCarManuals.comMain Menu s t

Heating and Cooling (cont'd)
To Heat
Switch the fan on, turn the temperature control dial clockwise, slide the function lever to the position and the recirculation lever
to the position, and warmed (outside) air will begin flowing

from the floor outlets.

To warm up the interior quickly, slide the recirculation lever to the
position so inside air will recirculate to the heater.

The windows may become fogged if the system is in the po-

sition for an extended period of time. As soon as the interior is
warmed, slide the lever to the position.

To Dehumidify (with optional air conditioner)
Because an air conditioner dehumidifies as it works, you can use it
in cool or cold weather to help defog the windows. Just switch the
fan on, push the A/C button, select the desired function and adjust
the temperature control dial to a comfortable setting.
NOTE:
This setting is desirable for most operating conditions in ambient temperatures above approximately 32°F (0°C).ProCarManuals.comMain Menu s t

Cooling System (cont'd)
1. Set the heater temperature control dial to maximum heat.
2. Remove the radiator cap, splash shield and drain plug when the radiator is cool, and drain the radiator.
3. Remove the drain bolt from the front side of the cylinder block,and drain the engine and heater.
4. Apply non-hardening sealant to the drain bolt threads, then rein-stall the bolt and tighten it se-

curely.

5. Tighten the radiator drain plug se-
curely.

6. Mix the recommended antifreeze with an equal amount of low-mineral or distilled water and fill
the reservoir to maximum, as illustrated.
7. Loosen the air bleed bolt in the thermostat housing, then fill the radiator to the filler neck with the coolant mixture. Tighten the
bleed bolt as soon as coolant starts to run out in a steady stream

without bubbles.

8. With the radiator cap off, start the engine and let it run until warmed up (fan goes on at least twice). Then, if necessary, addmore coolant mix to bring the level back up to the filler neck.
9. Put the radiator cap on, then run the engine again and check for
leaks.
RADIATOR

CAP

BLEED BOLT

DRAIN BOLT
DRAIN PLUG
Fill to

here
FILLER
NECK
Fill to here

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Jump Starting

To start a car with a dead battery, use another battery of the samevoltage, and the proper jumper cables.
Procedures other than those below could cause injury or
damage from battery acid spray, explosion or charging system

overload.

Never connect the jumper cable directly to the negative post of
the "dead" battery.
Never allow the two cars to touch each other. Never allow the jumper cable clamps to touch each other.
Never lean over the battery when making connections.
Never attempt to jump start a vehicle with a frozen battery. The
battery could rupture and explode. If you suspect a frozenbattery, remove the vent caps and check the fluid. If there
seems to be no fluid, or if you see ice, do not attempt a jump
start until the fluid thaws.

CAUTION:

If jumper cables are connected backwards, the car's main fuse
may blow.
1.Turn off all lights, heater and other electrical loads, set parking brake, and shift the transmission to Neutral or Park.
2. Use one cable to connect the positive terminal of the booster
battery to the positive terminal of the "dead" battery.

3. Use the other cable to connect
the negative terminal of the

booster battery to the engine at
the ground cable as shown.
4. To remove the cables, reverse the above procedures exactly.
DO NOT push or tow a car to start
it. The forward surge when the en- gine starts could cause a collision.
Also, under some conditions, the catalytic converter could be dam- aged. A car equipped with an auto-matic transmission cannot be
started by pushing or towing.
DEAD

BATTERY
Negative to the
engine at the

ground cable, not

to the battery

Do not attach

cable here
Positive to

positive
BOOSTER

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