1992 HONDA PRELUDE ignition

Changing a Flat Tire
If you
have a flat tire while driving,
stop in a safe place to change it.
Stopping in traffic or on the shoul-
der of a busy road is dangerous.
Drive slowly along the shoulder
until you get to an exit or an area to stop that is far away from the traf-
fic lanes.
1. Park the car on firm, level ground away from traffic. Turnon the hazard warning lights and
turn the ignition to LOCK (0). 2. Put the transmission in Park
(automatic) or Reverse (5-speed).
Set the parking brake.
3. Open the trunk. Raise the trunk floor by lifting up on the back

edge.

4. Take the tool kit out of the trunk. 5. Unscrew the wing bolt and take
the spare tire out of the trunk.

Taking Care of the Unexpected
CONTINUED

The car can easily roll off the

jack, seriously injuring anyone
underneath.

Follow the directions for chang-

ing a tire exactly, and never

get under the car when it is

supported only by the jack.
TRUNK FLOOR

JACK

SPARE TIRE

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If Your Engine Won't Start

Diagnosing why your engine won't
start falls into two areas, depending
on what you hear when you turn
the key to START (III): You hear nothing, or almost
nothing. The engine's starter
motor does not operate at all, or
operates very slowly.
You can hear the starter motor
operating normally, but the
engine does not start up and run. Nothing Happens or the
Starter Motor Operates Very
Slowly
When you turn the ignition switchto START (III), you do not hear the
normal noise of the engine trying to
start. You may hear
a clicking
sound or series of clicks, or nothing
at all.
Check these things:
Check the

transmission interlock.
If you have a 5-speed, the clutch
pedal must be pushed all the way
to the floor or the starter will not operate. With an automatic
transmission, it must be in Park
or Neutral.
Turn the ignition switch to ON
(II). Turn on the headlights and
check their brightness. If the
headlights are very dim or don't
light at all, the battery is dis-
charged.
See Jump Starting on

page 191
.
Turn the ignition switch to

START (III). If the headlights do

not dim, check the condition of

the fuses. If the fuses are OK,

there is probably something
wrong with the electrical circuit

for the ignition switch or starter
motor. You will need a qualified

technician to determine the

problem. (See Towing on page
202.)

If the headlights dim noticeably
or go out when you try to start
the engine, either the battery is

discharged or the connections

are corroded. Check the condi-

tion of the battery and terminal
connections (see page 153 ). You

can then try jump starting the

car from a booster battery (see
page 191).

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If Your Engine Won't Start, Jump Starting

The Starter Operates
Normally

In this case, the starter motor
sounds normal when you turn the
ignition switch to START (III), but
the engine does not run. Are you using the proper starting
procedure? Refer to Starting
the Engine on page 109 . Do you have gas? Turn the
ignition switch to ON (II) for a
minute and watch the fuel gauge.
There may be an electrical
problem, such as no power to the
fuel pump. Check all the fuses
(see page 199 ).

If you find nothing wrong, you will
need a qualified technician to find
the problem. See Towing on page
202.
Jump Starting

If your car's battery has run down,
you may be able to start the engine
by using a booster battery. Although this seems like a simple
procedure, there are several precau-
tions you should take. Follow the
directions closely.
You cannot start a Honda with an
automatic transmision by pushingor pulling it. To jump start your car:
1. Open the hood and check the physical condition of the battery
(see page 152 ). In very cold
weather, check the condition of the electrolyte. If it seems slushy
or like ice, do not try jump
starting until it thaws.
If a battery sits in extreme cold, the
electrolyte inside can freeze.
Attempting to jump start with a frozen battery can cause it to
rupture or explode.
2. Turn off all the electrical acces- sories: heater, A/C, stereo system,
lights, etc. Put the transmission in Neutral
or Park and set the parking
brake.

Taking Care of the Unexpected
CONTINUED
A battery can explode if you
do not follow the correct

procedure, seriously injuring

anyone nearby.

Keep all sparks, open flames,

and smoking materials away

from the battery.
NOTICE
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Fuses

Checking and Replacing
Fuses
If something electrical in your car
stops working, the first thing you
should check for is a blown fuse.
Determine from the chart on the
fuse box cover or inside the fuse
box which fuse or fuses control
that component. Check those fuses
first, but check all the fuses before deciding that is not the cause.
Replace any blown fuses and check
the component's operation.
1. Turn the ignition switch to LOCK (0). Make sure the head-
lights and all other accessories
are
off.

2. Remove the cover from the fuse box. 3. Check each of the large fuses in
the underhood fuse box by
looking through the top at the
wire inside. Removing these
fuses requires a phillips-head
screwdriver. 4. Check the smaller fuses in the
underhood fuse box and all the
fuses in the interior fuse box bypulling out each fuse with the
fuse puller provided in the interior fuse box.

Taking Care of the Unexpected
BLOWN
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Technical Information
The diagrams in this section give
you the dimensions and capacities
of your Honda, and the locations of
the identification numbers. The explanations of several electronic
and mechanical systems on your Honda are for the more technically-
oriented owner. Identification Numbers............... 204
Specifications................................ 206
Anti-lock Brake System ............. 208
Supplemental Restraint
System........................................ 209

Four Wheel Steering ................... 210
Emission Controls......................... 211 The Clean Air Act.................... 211
Crankcase Emission Control
System.................................... 211

Evaporative Emission Control
System.................................... 211

Exhaust Emission Controls.... 212 PGM-FI System.................... 212

Ignition Timing Control
System................................ 212

Exhaust Gas
Recirculation..................... 212

Catalytic Converter............. 212

Replacement Parts................... 212

Catalytic Converter..................... 213

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Supplemental Restraint System

The Honda
Supplemental Restraint
System (SRS) is standard on all
Preludes sold in the U.S. and the
SR, SR 4WS sold in Canada.
The SRS includes the steering
wheel airbag assembly, sensors in the dashboard, and a control unit
with sensors behind the center

console.

(On Si 4WS model)
The system also has a dashboard-
mounted airbag assembly for the

passenger.

The sensors are decelerometers,
set to trigger in a frontal impact that generates more force than a 10
mile per hour barrier crash. For the
SRS to activate, at least two sen-
sors must trigger. This duplication
is to prevent accidental activation. When the control unit receives
trigger signals from at least two
sensors, it sends voltage to the
airbag. The control unit stores this
charge in capacitors to insure
reliability even if a severe impact damages the car's battery or
electrical connections.
The electrical charge sent to the
airbag assembly ignites its propel-
lant, which burns instantaneously.
The gas produced by the burning propellant inflates the airbag in
about 40 milliseconds (1/25 of a

second).

The airbag is vented so it stays inflated for only an instant and
does not block the driver's vision.
Smoke from the burned propellant
comes out of the airbag and into
the car's interior. This is normal
and does not mean there is a fire.
The airbag collapses onto the driver's lap. The airbag unit can inflate only one
time. After use, your Honda dealer
must check the complete Supple-
mental Restraint System and re-
place the airbag assembly.
To ensure long-term reliability, the
SRS uses gold-plated electrical
connections throughout. Exposed
components are sealed with epoxy.
The control unit monitors the SRS circuitry whenever the ignition is
ON (II). If the control unit senses
any faults, it turns on the SRS
indicator light on the instrument
panel. Take the car to your Honda
dealer to diagnose and repair the system as soon as possible.
The SRS needs no regular mainte-
nance other than an inspection by
your Honda dealer ten years after

manufacture.

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Four Wheel Steering

The Si 4WS model in the U. S and
the SR 4WS model in Canada are
equipped with an electronic Four
Wheel Steering system.
As inputs, the 4WS system uses a
vehicle speed sensor and a sensor to measure how far the front
wheels are turned.
The electronic control unit for 4WS system uses these inputs to deter-
mine which direction to steer the
rear wheels, and at what angle. Depending on vehicle speed and the
angle of the front wheels, the rear
wheels will be "countersteered"
(steered in the opposite direction of
the front wheels) or "same-steered"
(steered in the same direction as
the front wheels). The 4WS electronic control unit
drives an electric motor built into
the rear steering box. Sensors for
rear wheel angle and speed provide
feedback. The electronic control
unit uses this feedback to compare
the actual rear wheel angle to the
desired angle.
When the driver turns the front
wheels with the car traveling less
than 18 mph (30 km/h), the rear
wheels are countersteered. The angle of countersteer increases as
the angle of the front wheels in-
creases, to a maximum counter-
steer angle of six degrees. This
improves response when parallel
parking or making sharp turns.
Above 18 mph (30 km/h), the rear
wheels are same-steered as the driver begins to turn the steering
wheel. The rear wheel angle for
any given steering wheel angle is
not fixed; it increases as vehicle speed increases. This improves
response in lane-changing maneu-
vers.
As the driver continues to turn the
steering wheel, the rear wheels are
steered back to the straight-ahead
position and then to countersteer
mode. As with same steer, the
angle of countersteer varies with
vehicle speed; increasing and then decreasing as the speed rises. This
gives improved handling in low, medium, and high speed curves.
The 4WS system's electronic
control unit monitors the sensors
whenever the ignition is ON. If it detects a problem anywhere in the
system, it lights the 4WS indicator
on the instrument panel and turns
the system off. With the system off,
the rear wheels remain pointed
straight ahead. Your car will then
drive like a conventional car
without 4WS.

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Emission Controls

Exhaust Emission Controls

The exhaust emission controls
include four systems: PGM-FI,
Ignition Timing Control, Exhaust
Gas Recirculation and Catalytic
Converter. These four systems
work together to control the engine's combustion and minimize
the amount of HC, CO, and NOx
that comes out the tailpipe. The
exhaust emission control systems
are separate from the crankcase
and evaporative emission control

systems.

PGM-FI System
The PGM-FI System on your car
has three sub systems: Air Intake,
Electronic Control, and Fuel
Control. The Electronic Control
Unit (ECU) uses various sensors to
determine how much air is going
into the engine. It then controls
how much fuel to inject under all
operating conditions. Ignition Timing Control System
This system constantly adjusts the
ignition timing, reducing the
amount of HC, CO and NOx

produced.

Exhaust Gas Recirculation (EGR)
The EGR system takes some of the
exhaust gas and routes it back into
the intake manifold. Adding ex-
haust gas to the air/fuel mixture re-
duces the amount of NOx produced
when the fuel is burned.
Catalytic Converter
The catalytic converter is in the exhaust system. Through chemical
reactions, it converts HC, CO, and
NOx in the engine's exhaust to
carbon dioxide (CO 2), dinitrogen
(N 2), and water vapor.
Replacement Parts

The emission control systems are

designed and certified to work to-

gether in reducing emissions to
levels that comply with the Clean

Air Act. To make sure the emis-
sions remain low, you should use

only new genuine Honda replace-

ment parts or their equivalent for

repairs. Using lower quality parts
may increase the emissions from

your car .

The emissions control systems are

covered b y
warranties separate

from the rest of your car. Read

your warranty manual for more
information.
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