1992 HONDA PRELUDE brake fluid

Anti-lock Brake System

The Anti-lock Brake System (ABS) is standard equipment on the
Prelude Si, Si 4WS sold in the U.S.
and SR, SR 4WS sold in Canada. It
is not available on any other models.
The ABS works by measuring how
fast the wheels are turning during
braking and comparing their speed.If any wheel is rotating much
slower than the others (on the
verge of locking up and skidding),
the system reduces hydraulicpressure to that wheel's brake
caliper. When that wheel's speed
matches the other wheels, the
system applies normal hydraulic pressure. This can take place
several times per second at each
wheel. You feel the ABS working as rapid pulsations in the brake

pedal.
Each wheel has a wheel speed
sensor assembly. As the wheel
rotates, the sensor sends electrical
pulses to the ABS control unit. The
pulse frequency varies with the
wheel speed.
The electrical output of the ABScontrol unit is connected to the
modulator/solenoid unit. During
braking, the ABS control unit monitors the pulse frequencies
from the four wheels. When the control unit detects a wheel locking
up, it energizes the appropriate
solenoid in the modulator/solenoid
unit. There are three solenoids: one
for each front wheel, and one for
the rear wheels. The energized solenoid reduces hydraulic pres-
sure to one side of a modulator
valve. This, in turn, reduces hydrau- lic pressure in the brake line going
to the affected wheel. When that
wheel speeds up because of the re- duced braking effort, the control unit de-energizes the solenoid. This
builds hydraulic pressure on the
modulator valve. The pressure in-
creases in the hydraulic line to the

wheel.

For the system to react quickly, the
modulator/solenoid unit must have
brake fluid under high pressure.
This is supplied by an accumulator
that is pressurized by an electric pump. A pressure-sensing switch
on the accumulator controls this
pump.
The control unit also contains error detection circuitry. It monitors the
operation of the wheel sensors, solenoids, pump, and electronics. If
the control unit detects any faults,
it shuts off power to the pump
motor and solenoids. The light on
the instrument panel comes on.
The brakes then work like a conventional system without anti-
lock capabilities.

Technical InformationProCarManuals.comMain Menu Table of Contents s t

Index

Accessories
Installation................................. 105

ACCESSORY
(Ignition Key Position).............. 48

Adding
Automatic Transmission
Fluid........................................ 144

Brake Fluid............................... 146 Clutch Fluid.............................. 147

Engine Oil...:.............................. 135

Manual Transmission Fluid... 145

Power Steering Fluid.............. 148

Radiator Coolant...................... 139

Windshield Washer fluid ........ 143

Additional Safety Information .... 16
Door Locks.................................. 16

Driving with Pets....................... 17

Seat-back Position..................... 16

Storing Cargo Safely................. 17

Additives, Engine Oil................... 136

Adjustments
Mirrors....................................... .
59

Seats............................................. 51
Steering Wheel..........................

43

Airbag (SRS).................................. 1
0

Air Conditioning............................. 68

Maintenance..............................
157

Usage............................................ 6 8

Ai
r Filter........................................
149
Air Outlet
s
(Vents)......................... 68

Air Pressure, Tires ......................
159

Alcohol an d
Drugs.......................... 24

Alcohol in Gasoline........................ 98

Antifreeze......................................
139

Anti-lock Brake s
(ABS)

Description................................
208

Indicator Light.................. .
34,
118

Operation................................... 117

Anti-theft Steerin
g
Column

Lock.............................................. 48

Appearance Care..........................
175

Ashtray............................................. 65

Audio System................................. .
75

Automatic Speed Control............. 44
Automatic Transmission............ 112

Capacity, Fluid........................
.

206

Checking Fluid Level.............. 144

Shifting
...................................... 113

Shift Leve r
Positions...............
112
Shift Lock Release................... 115
Battery
Charging System Light............. 33

Jump Starting............................ 191

Maintenance.............................. 152

Specifications............................ 207

Before Driving
................................ 97

Belts, Seat ......................................... 4
Body Repair
...................................
181

Brakes

Anti-lock Syste
m (ABS)..........
117
Break-in, Ne
w
Linings.............. 98
Fluid............................................
146
Light, Burned-out................... .

169
Parking......................................... 61

System Light.............................. .
33

Wear Indicators.....................
116
Brakes, AB S

Description...............................
.
208

Operation................................... 117

System Indicator...............
.
34,
118

Braking System...........................
.

116

Break-in, Ne
w
Car ......................... 98

CONTINUEDProCarManuals.comMain Menu s t

Index

Brightness Control, Instruments................................. 41
Brights, Headlights........................ 40
Bulb Replacement Back-up Lights......................... 169
Brake Lights.............................

169
Front Parking

Lights ..............
165
Front Side

Marker Lights......
166
Headlights................................. 164
High-mount Brake

Light........
168
License Plate

Lights................
171
Rear Sid
e
Marker Lights........
170

Specifications............................ 207

Turn Signa
l
Lights ..................
167
Bulbs, Halogen.............................
.

164

Cables, Jum
p
Starting With........
191

Capacities Chart...........................
206

Carbo
n Monoxide Hazard ............ 25

Cargo, Loading.............................
106

Cassette Playe r

Care..............................................
. 94

Operation.............................. 81,
91

Catalytic Converter.................... .

213

CAUTION, Explanatio
n
of............ ii
Center Console Compartment..... 64
Certification Label....................... 204

Chains............................................. 163

Change Oil
How to........................................ 137

When to...................................... 129

Changing a Flat Tire................... 185

Changing Engine Coolant........... 140

Charging System Light........ 33, 196
Check Engine Light............. 34, 197

Checking
Automatic Transmission
Fluid........................................
144

Battery Condition.................... .

152

Brake Flui
d
...............................
146

Clutch Fluid.............................
.

147

Engine Belts.............................
.

158

Engine Oil.................................
.

135

Fuses........................................... 199

Manual Transmissio
n
Fluid...
145
Power Steerin
g
Fluid..............
148
Radiator Coolant.....................
.

139
Checklist, Befor
e
Driving...........
108
Child Safety....................................
.
18
Cigarette Lighter........................... 65
Cleaner, Air...................................
149

Cleaning

Exterior......................................
176

Interior....................................... 179

Seat Belts...................................

179

Vinyl........................................... 179
CLEAN Light................................
.
94

Clock, Setting the.......................... 63

Clutch Fluid..................................
147

CO i n
the Exhaust........................
211
Cold Weather
,
Starting in...........
110

Compact Spare.............................
.

184

Consumer Information................
217

Controls, Instruments
and............ 29

Coolant
Adding........................................ 139

Checking.................................... 139

Proper Solution......................... 139

Temperature Gauge.................. 38

Corrosion Protection................... 180

Crankcase Emission Control
System........................................ 211

Cruise Control Operation ............. 44

Customer Relations Office......... 217ProCarManuals.comMain Menu s t

Index

DANGER, Explanation of.............. ii

Dashboard........................................ 30

Daytime Running Lights.............. 40
Dead Battery, What to Do........... 191
Defects, Reporting Safety ............ 26
Defogger, Rear Window ............... 56
Defrosting the Windows............... 74
DEXRON ®
II Automatic
Transmission Fluid.................. 144

Dimensions.................................... 206

Dimming the Headlight
s .............. 40
Dipstick Automatic Transmission........
144

Engine Oil................................. .

135

Directional Signals........................
.
41
Disabled, Towing Your Car If ... 202
Disc Brake Wear Indicators.......
116
Disposal o f
Used Oil.....................
138

Doors

Locking an
d Unlocking ............ 48
Power Door Locks ..................... 48
DOT Tire Quality Grading......... 161
Downshifting,

5-speed Transmission.............. 111

Driving .......................................... .
107

Economy.................................... 104
In Bad Weather......................... 119
In Foreign Countries................. 99
Economy, Fuel.............................. 104
Emergencies on the Road........... 183 Battery, Jump Starting............ 191
Changing a Flat Tire............... 185
Charging System Light........... 196
Check Engine Light................. 197
Checking the Fuses.................
200
Low Oi l
Pressure Light........... 195
Manually Closing Sunroof...... 198
Overheated Engine.................. 193

Emergency Brake ......................... 61

Emergency Flashers...................... 56
Emission Controls......................... 211
Engine Check Light....................... 34, 197
Coolant Temperature Gauge... 38
Oil Pressure Light............. 33, 195
Oil, What Kind to Use .............
135
Overheating............................... 193

Specifications........................... 206

Ethano l
in Gasoline........................ 98
Evaporative Emission Controls......................................
211
Exhaust Fumes.............................. .
25
Expectant Mothers, Use of Seat Belts by.................................. 8
Exterior, Cleaning the.................
176

Fabric, Cleaning........................... 179

Fan, Interior.................................... 68

Fan, Radiator.................................. 27

Features, Comfort
and Convenience........................ 67

Filling the Gas Tank.................... 100

Filters

Air
............................................... 149

Fuel............................................. 150

Oil ............................................... 137

First Gear, Shifting...................... 111

5-Speed Transmissio n
Checkin
g Fluid Level..............
145

CONTINUED
ProCarManuals.comMain Menu s t

Index

5-Speed Transmission,
Shifting the ............................... 111

Flashers, Hazard
Warning ........... 56
Flat Tire, Changing a..................
185
Fluids Automatic Transmission.......
. 144
Brake.......................................... 146
Clutch......................................... 147
Manual Transmission.............. 145
Power Steering......................... 148
Windshield Washer..................
155
FM Stereo
Radio

Reception.............................. 75, 84

Folding Rear Seat.......................... 55
Foreign Countries, Driving in...... 99
Four-way Flashers......................... 56
Four Wheel Steering (4WS)
Description................................ 210

Indicator Light........................... 35

Operation...................................
118

Front End ,
Towing by Emergency

Wrecker..................................... 202

Fuel................................................... 9
8

Fille
r Door and Cap..................
100

Filter........................................... 150

Gauge............................................ 3
8
Octan
e Requirement................. 98

Oxygenated................................. 98

Tank, Filling the ...................... 100

Fuses, Checking the .................... 200

Gas Mileage, Improving.............. 104

Gasohol............................................ 98

Gasoline............................................ 98
Filter...........................................
150

Gauge............................................ 3 8

Octan
e Requirement................. 98
Tank, Filling the ......................
100
Gas Statio n
Procedures...............
100

Gauges

Engine Coolan
t Temperature.. 38

Fuel............................................... 38

Gearshift Lever Positions Automatic Transmission........
112

5-speed Transmission............. .

111

Glass Cleaning.............................
.

180

Glove Box........................................
.
62
Halogen Headlight Bulbs............ 164

Hazard Warning Flashers ............ 56

Headlights
Daytime Running Lights.......... 40

High Beam Indicator................. 35

High Beams, Turning on.......... 40
Low Beams, Turning on........... 40

Reminder Chime........................ 40

Replacing Halogen Bulbs ....... 164

Turning on.................................. 40

Heating and Cooling...................... 68

High Altitude, Starting at...........
110

High-Low Bea m
Switch ............... 40
Hood, Opening the........................
101

Horn.................................................. 4 7

Ho
t Coolant, Warning about......
139

Hydraulic Clutch.........................
.

147

Hydroplaning................................. 119

Identification Number
,

Vehicle......................................
.
204

If You
r
Car Has to be Towed ....
202
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