ignition Acura RL 2000 3.5 Repair Manual

I
f You r Engin e Won' t Star t

Turn the ignition switch to ON (II).
Turn on the headlights and check their brightness. If the headlightsare very dim or don't light at all,
the battery is discharged. See

Jum p Startin g on page 278.
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 proba-
bly something wrong with the
electrical circuit for the ignition switch or starter motor. You will
need a qualified technician to determine the problem. (See

Emergenc y Towin g on page 292.)
If the headlights dim noticeably or
go out when you try to start the engine, either the battery is dis-
charged or the connections are
corroded. Check the condition of
the battery and terminal connec-
tions (see page 234). You can
then try jump starting the car froma booster battery (see page 278 ).
Th e Starte r
Operate
s Normall y
In this case, the starter motor's
speed sounds normal, or even faster
than 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 Startin g th e
Engin e on page 179 . Do you have fuel? Turn the
ignition switch to ON (II) for a
minute and watch the fuel gauge.
The low fuel level warning light may not be working, so you werenot reminded to fill the tank. There may be an electrical
problem, such as no power to the
fuel pump. Check all the fuses
(see page 287).

If you find nothing wrong, you will need a qualified technician to find
the problem. See Emergenc y
Towin g on page 292.
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Lo
w Oi l Pressur e Indicato r

This indicator should light when the ignition switch is ON (II), and go outafter the engine starts. It should
never come on when the engine is
running. If it starts flashing, it
indicates that the oil pressure
dropped very low for a moment, then
recovered. If the indicator stays on
with the engine running, it shows that the engine has lost oil pressure
and serious engine damage is
possible
. I
n either case, you should
take immediate action.
Running the engine with low oil
pressure can cause serious mechanical
damage almost immediately. Turn off
the engine as soon as you can safely get
the car stopped.

1.

Safely pull off the road and shut

off the engine. Turn on the hazard

warning indicators.
2. Let the car sit for a minute. Open the hood and check the oil level
(see page
169). Although oil level
and oil pressure are not directly connected, a
n engine that is very
low on oil can lose pressure during cornering and other driving

maneuvers.

3. If necessary, add oil to bring the level back to the full mark on the
dipstick (see page
215). 4. Start the engine and watch the oil
pressure indicator. If the light
does not go out within ten seconds,
turn off the engine. There is a
mechanical problem that needs tob

e repaired before you can
continue driving. (See Emergenc y
Towin g o

n page 29
2.)
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NOTIC
E

LO W OI L PRESSUR E INDICATO R

Chargin
g Syste m Indicato r

This indicator should come on when the ignition switch is ON (II), and goout after the engine starts. If it
comes on brightly when the engine
is running, it indicates that the charging system has stopped
charging the battery. Immediately turn off all electrical
accessories: radio, climate control,
rear defogger, cruise control, etc.
Try not to use other electrically- operated controls such as the power
windows. Keep the engine running and take extra care not to stall it.
Starting the engine will discharge
the battery rapidly. By eliminating as much of the
electrical load as possible, you can
drive several miles (kilometers)
before the battery is too discharged
to keep the engine running. Drive to a service station or garage where
you can get technical assistance.

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CHARGIN
G SYSTE M INDICATO R

Malfunctio
n Indicato r Lam p
This indicator comes on for a few seconds when you turn the ignition
switch ON (II). If it comes on at any
other time, it indicates one of the
engine's emissions control systems
may have a problem. Even though
you may feel no difference in your car's performance, it can reduce
your fuel economy and cause your car to put out excessive emissions.
Continued operation may cause
serious damage.
If you have recently refueled your
car, the cause of this indicator
coming on could be a loose or
missing
fuel
fill cap. Check

the cap
and tighte
n it until it clicks several
times. Replace the fuel fill cap if
it is
missing. Tightening
the cap will

not
make the
indicator turn off
immediately; it takes three
driving

trips
.

If
the indicator remains on past three
driving trips, or the fuel cap was not
loose or missing, have
the car
checked by
the dealer as

soon as
possible.
Drive
moderately until the
dealer has inspected the problem.
Avoid full-throttle acceleration and driving at high speed.
You should also have
the dealer
inspect you
r car if this indicator
comes on repeatedly, even
though it
may tur
n off as you continue driving.
If you keep driving with the
malfunction indicator lamp on, you can
damage your car's emissions controls
and engine. Those repairs may not be
covered by your car's warranties.

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MALFUNCTIO
N INDICATO R LAM P
NOTIC
E

Brak
e Syste m Indicato r

The Brake System Indicator comes on when you turn the ignition ON (II). If the parking brake is not set, it
goes off after you start the engine. If
the parking brake is set, it goes off
when you fully release the parking brake with the engine running. If it comes on at any other time, it
indicates a problem with the car's
brake system. In most cases, the
problem is a low fluid level in the
brake fluid reservoir. Press lightly on
the brake pedal to see if it feels
normal. If it does, check the brake
fluid level the next time you stop at a service station (see page 228). If the
fluid level is low, take the car to your dealer and have the brake system
inspected for leaks or worn brake

pads.

However, if the brake pedal does not
feel normal, you should take immediate action. Because of the
brake system's dual-circuit design, a
problem in one part of the system
will still give you braking at two
wheels. You will feel the brake pedal
go down much farther before the car
begins to slow down, and you will
have to press harder on the pedal.
The distance needed to stop will be much longer. Slow down by shifting to a lower
gear, and pull to the side of the road
when it is safe. Because of the
longer distance needed to stop, it is
hazardous to drive the car. You should have it towed, and repaired as
soon as possible. (See Emergenc y
Towin g on page 292.)
If you must drive the car a short distance in this condition, drive
slowly and cautiously.
If the ABS indicator and the VSA system indicator come on with this
indicator, have the car inspected by
your dealer immediately.
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*U.S
. indicato r show n
BRAK
E SYSTE M INDICATOR *

Fuse
s

Checkin g an d Replacin g Fuse s

If something electrical in your car stops working, the first thing you
should check for is a blown fuse.
Determine from the chart on pages 290 and 291, or the diagram on the
fuse box lid, which fuse or fuses
control that component. Check those
fuses first, but check all the fuses
before deciding that a blown fuse 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 headlights and
all other accessories are off.
2. Remove the
cover from the fuse
box.
FUS
E

3.
Check each

of the large fuses in
the under-hoo
d fuse box by
looking through the top at the wire
inside. Removing these fuses
requires a Phillips-head screw- driver. 4. Check the

smaller fuses in the
under-hood fuse box and all the
fuses in the interior fuse box by
pulling out each fuse with the fuse
puller provided in the door of
the
interior fuse box.

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BLOW
N
FUS
E
PULLE R

Emergenc
y Towin g

If you decide to tow your car with all
four wheels on the ground, make sure you use a properly-designed and
attached tow bar. Prepare the car for
towing as described above, and leave the ignition switch in Accessory (I)so the steering wheel does not lock.
Make sure the radio and any items
plugged into the accessory power socket are turned off so they do not
run down the battery.

The steering system can be damaged if
the steering wheel is locked. Leave the
ignition switch in Accessory (I), and
make sure the steering wheel turns
freely before you begin towing. Trying to lift or tow your car by the

bumpers will cause serious damage.

The bumpers are not designed to

support the car's weight.

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NOTIC
E
NOTIC E

Technica
l Informatio n

The diagrams in this section give you the dimensions and capacities of
your Acura, and the locations of theidentification numbers. The explana-
tions of several electronic and
mechanical systems on your Acura are for the more technically-oriented
owner. Identification Numbers................. 296
Specifications................................. 298
Vehicle Stability Assist (VSA) System......................................... 300
DOT Tire Quality Grading
(U.S. Cars).............................. 301
Treadwear.................................. 301
Traction....................................... 301
Temperature.............................. 302
Oxygenated Fuels.......................... 303
Driving in Foreign Countries....... 304 Emissions Controls........................ 305
The Clean Air Act...................... 305
Crankcase Emissions Control System..................................... 305
Evaporative Emissions Control System..................................... 305
Onboard Refueling Vapor Recovery................................. 305
Exhaust Emissions Controls.... 306 PGM-FI System..................... 306
Ignition Timing ControlSystem................................. 306
Exhaust Gas Recirculation (EGR) System.................... 306
Three Way Catalytic Converter............................ 306
Replacement Parts..................... 306
Three Way Catalytic Converter... 307

Technical Informatio n

Vehicl
e Stabilit y Assis t (VSA ) Syste m

The Vehicle Stability Assist system (VSA) monitors the car's actions
during straight-line acceleration and
cornering behavior. It reduces
engine power and applies selective
braking if it senses any loss of
traction.
Controllin g Tractio n Durin g
Straight-lin e Acceleratio n
If one drive wheel is turning faster
than the other, or both drive wheels
are turning faster than the non- driven wheels, VSA senses
wheelspin. It reduces engine power and applies braking at the wheels as
necessary to increase traction.
To do this, VSA monitors the pulse frequencies from the wheel speed sensors. It also uses information
from the steering wheel angle sensor
and the lateral acceleration sensor to determine if the car is accelerating in
a straight line or if it is cornering.
VSA can then calculate how much wheelspin, if any, to allow. It signals
the ECU to reduce fuel flow andretard ignition timing. This reduces
available engine power. The ECU
will also apply braking at the wheels as necessary. When wheelspin has
been controlled, braking and engine
control return to normal.
Controllin g Tractio n Durin g
Cornerin g
VSA monitors steering input and the car's expected response to that input.
VSA's yaw rate sensor measures the car's actual cornering behavior. If VSA determines that the car is
turning more or less than expected,
the system reduces engine power
and applies braking at the
appropriate wheel to try and
maintain adequate traction during
cornering.
VSA uses the same wheel speed sensor assemblies as the ABS.
Additional sensors measure steering wheel angle, lateral acceleration, and
yaw rate.
The control unit monitors the VSA circuitry while driving. If it senses a
problem, it turns off the system and illuminates the VSA System
Indicator on the instrument panel.
Technica l Informatio n

Emission
s Control s

Exhaus t Emission s Control s
The exhaust emissions controls include four systems: PGM-FI,
Ignition Timing Control, ExhaustGas 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
emissions control systems areseparate from the crankcase and
evaporative emissions control

systems.

PGM-FI System

The PGM-FI System uses sequential multiport fuel injection.
It has three subsystems: Air Intake,
Engine Control, and Fuel Control.
The Powertrain Control Module (PCM) uses various sensors to
determine how much air is going
into the engine. It then controls how
much fuel to inject under all operat-
ing conditions. Ignition Timing Control System
This system constantly adjusts the ignition timing, reducing the amountof HC, CO and NOx produced.
Exhaust Gas Recirculation (EGR)
System

The Exhaust Gas Recirculation (EGR) system takes some of the
exhaust gas and routes it back into
the intake manifold. Adding exhaust
gas to the air/fuel mixture reduces
the amount of NOx produced when
the fuel is burned.
Three Way Catalytic Converter
The three way catalytic converter is in the exhaust system. Throughchemical reactions, it converts HC,
CO, and NOx in the engine's exhaust
to carbon dioxide (CO 2), dinitrogen
(N 2), and water vapor. Replacemen
t Part s

The emissions 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 emissions remain low, you should use only newGenuine Acura replacement parts or
their equivalent for repairs. Using
lower quality parts may increase the emissions from your car.
The emissions control systems are covered by warranties separate from
the rest of your car. Read your
warranty manual for more informa-
tion.

Technica l Informatio n