2002 HONDA PASSPORT sensor

44 Driver and Passenger Safety
• Sensors that can detect a
moderate to severe frontal
collision.
• A sophisticated electronic
system that continually
monitors the sensors, control
unit, the airbag activators and
all related wiring when the
ignition is ON (II).
• An indicator light on the
instrument panel to alert you to
a possible problem with the
system (see page 45).
•Emergency backup power in
case your vehicle’ s electrical
system is disconnected in a
crash.
How Your Airbags Work
If you ever have a moderate to
severe frontal collision, the
sensors will detect rapid
deceleration and signal the control
unit to instantly inflate the
airbags.
During a crash, your seat belt
helps restrain your lower body
and torso. Your airbag provides a cushion to help restrain and
protect your head and chest.
Since both airbags use the same
sensors, both airbags normally
inflate at the same time. However,
it is possible for only one airbag
to inflate.
This can occur when the severity
of a collision is at the margin, or
threshold, that determines whether
or not the airbags will deploy. In
such cases, the seat belt will
provide sufficient protection and
the supplemental protection
provided by the airbag would be
minimal.

converter. These replacements
are not covered under warranty.
173Driving Tips
If you are planning to take your
Honda outside the U.S. or
Canada, contact the tourist
bureaus in the areas you will be
traveling in to find out about the
availability of unleaded gasoline
with the proper octane rating.
If unleaded gasoline is not
available, be aware that using
leaded gasoline in your Honda
will affect performance and fuel
mileage, and damage its
emissions controls. It will no
longer comply with U.S. and
Canadian emissions regulations,
and will be illegal to operate in
North America. To bring your
vehicle back into compliance will
require the replacement of several
components, such as the oxygen
sensor and the three-way catalytic
Modifying your vehicle, or
installing some non-Honda
accessories, can make your vehicle
unsafe. Before you make any
modifications or add any
accessories, be sure to read the
following information.
Accessories
Your dealer has Genuine Honda
accessories that allow you to
personalize your vehicle. These
accessories have been designed and
approved for your vehicle, and are
covered by warranty.
Non-Honda accessories are
usually designed for universal
applications. Although
aftermarket accessories may fit on
your vehicle, they may not meet
factory specifications, and could
adversely affect your vehicle
’s
handling and stability. (See “Modifications” on the next page
for additional information.)
Improper accessories or
modifications can affect
your vehicle’
s handling,
stability and performance,
and cause a crash in
which you can be hurt or
killed.
Follow all instructions in
this owner ’s manual
regarding accessories and
modifications.
When properly installed, car
phones, alarms, two-way radios,
and low-powered audio systems
should not interfere with your
vehicle’ s computer-controlled
Operation in
Foreign CountriesAccessories & Modifications

242Technical Data
Fuse Box: Engine Compartment
AmperageApplicability
115AHazard Warning Light
210AHorn
3––––
420ABlower
510AAir conditioner
6––––
7––––
810AHeadlight; left
910AHeadlight; right
1015AFog lights
1110AO2 Sensor
1220AFuel pump
1315AECM
14––––
1560APower distribution
16100AMain
1760AABS
1830ACondenser fan
19––––

249Owner Assistance
maintain
them. This section
summarizes how the emissions
controls work. Scheduled
maintenance is on page 204.
Crankcase Emissions
Control System
Your vehicle has a Positive
Crankcase Ventilation System.
This keeps gasses that build up in
the engine ’s crankcase from going
into the atmosphere. The Positive
Crankcase Ventilation valve routes
them from the crankcase back to
the intake manifold. They are then
drawn into the engine and burned.
Evaporative Emissions
Control System
As gasoline evaporates in the fuel
tank, an evaporative emission
control canister filled with
charcoal adsorbs the vapor. It is
stored in this canister while the engine is off. After the engine is
started and warmed up, the vapor
is drawn into the engine and
burned during driving.
Onboard Refueling Vapor
Recovery
The Onboard Refueling Vapor
Recovery (ORVR) system captures
the fuel vapors during refueling.
The vapors are adsorbed in a
canister filled with activated
carbon. While driving, the fuel
vapors are drawn into the engine
and burned off.
Exhaust Emissions Controls
The exhaust emission controls
include four systems: Fuel
Injection, Ignition Timing Control,
Exhaust Gas Recirculation, and
Three-Way 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.
Fuel Injection System
The Fuel Injection System uses
sequential multiport fuel injection.
It has three subsystems: Air
Intake, Engine Control, and Fuel
Control. The Engine Control
Module (
ECM) 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.