2004 Acura TL check engine

Diagnosing why the engine won’t
start f alls 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, or the starter
motor sounds like it is spinning
f aster than normal, but the engine
does not start up and run. When you turn the ignition switch to
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.
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 discharged. See on page . Turn the ignition switch to START
(III). If the headlights do not dim,
check the condition of the f uses. If
the f uses are OK, there is
probably something wrong with
the electrical circuit f or the
ignition switch or starter motor.
You will need a qualif ied
technician to determine the
problem (see
on page ).
Check these things:
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 ). You can
then try jump starting the vehicle
f rom a booster battery (see page).
Check the transmission interlock.
If you have a manual transmission,
the clutch pedal must be pushed
all the way to the f loor or the
starter will not operate. With an
automatic transmission, the shif t
lever must be in Park or Neutral.
238 226
238 249
If theEngineWon’tStart
T aking Care of t he Unexpect ed
Nothing Happens or the Starter
Motor Operates Very Slowly
Jump Starting Emergency T owing
236

In this case, the starter motor’s
speed sounds normal, or even f aster
than normal, when you turn the
ignition switch to START (III), but
the engine does not run.Are you using a properly coded
key? An improperly coded key will
cause the immobilizer system
indicator in the instrument panel
to blink rapidly (see page ).
Are you using the proper starting
procedure? Ref er to on page . There may be an electrical
problem, such as no power to the
f uel pump. Check all the f uses
(see page ).
If youfindnothingwrong,youwill
need a qualif ied technician to f ind
the problem. See
on page .
Do you have f uel? Check the f uel
gauge; the warning indicator may
not be working.
56
177 245
249
If theEngineWon’tStart
T he Starter Operates Normally
Starting the
Engine Emergency
Towing
T aking Care of t he Unexpect ed237

´´ µ
Although this seems like a simple
procedure, you should take several
precautions.
Turn of f all the electrical acces-
sories: heater, A/C, stereo system,
lights, etc. Put the transmission in
Neutral or Park, and set the
parking brake.
Connect one jumper cable to the
positive ( ) terminal on your
battery. Connect the other end to
the positive ( ) terminal on the
booster battery.Connect the second jumper cable
to the negative ( ) terminal on
the booster battery. Connect the
other end to the grounding strap
as shown. Do not connect this
jumper cable to any other part of
the engine.
You cannot start an Acura with an
automatic transmission by pushing
or pulling it. Open the hood, and check the
physical condition of the battery.
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.
1.
2.
3. 4.
Jump Starting
T aking Care of t he Unexpect ed
To Jump Start Your Vehicle:
238
NOTICE:
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. If a battery sits in extreme
cold, the electrolyte inside can f reeze.
Attempting to jump start with a f rozen
battery can cause it to rupture.

Start the engine and set the
interior temperature to maximum.
Add coolant to the radiator up to
the base of the f iller neck. If you
do not have the proper coolant
mixture available, you can add
plain water. Remember to have
the cooling system drained and
ref illed with the proper mixture as
soon as you can.
Put the radiator cap back on
tightly. Run the engine, and watch
the temperature gauge. If it goes
back to the red mark, the engine
needs repair (seeon page ).
If the temperature stays normal,
check the coolant level in the
radiator reserve tank. If it has
gone down, add coolant to the
MAX mark. Put the cap back on
tightly.
Using gloves or large heavy cloth,
turn the radiator cap
counterclockwise, without pushing
down, to the f irst stop. Af ter the
pressure releases, push down on
the cap, and turn it until it comes
off.
If you don’t f ind an obvious leak,
check the coolant level in the
radiator reserve tank. Add coolant
if the level is below the MIN mark
(see
on
page ).
If there was no coolant in the
reserve tank, you may need to add
coolant to the radiator. Let the
engine cool down until the pointer
reaches the middle of the tempera-
ture gauge, or lower, bef ore check-
ing the radiator. 8. 9.
7.
11. 10.
6.
249
207
If theEngineOverheats
T aking Care of t he Unexpect ed
Emergency
Towing
A dding Engine Coolant
241
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.

Saf ely pull of f the road, and shut
of f the engine. Turn on the hazard
warning indicators.
If necessary, add oil to bring the
level back to the full mark on the
dipstick (see page ).
Start the engine, and watch the oil
pressure indicator. If it does not go
out within 10 seconds, turn of f the
engine. There is a mechanical
problem that needs to be repaired
bef ore you can continue driving
(seeon page
).
This indicator should never
come on when the engine is
running. If it starts f lashing
or stays on, the oil pressure has
dropped very low or lost pressure.
Serious engine damage is possible
and you should take immediate
action. Let the vehicle sit f or a minute.
Open the hood, and check the oil
level (see page ). An engine
very low on oil can lose pressure
during cornering and other driving
maneuvers. If the charging system
indicator comes on brightly
when the engine is running,
the battery is not being charged.
Immediately turn of f all electrical
accessories. Try not to use other
electrically operated controls such as
the power windows. Keep the engine
running; starting the engine will
discharge the battery rapidly.
Go to a service station or garage
where you can get technical
assistance.
1.
2.
3.
4.
167
204
249
L ow Oil Pressure Indicator, Charging System Indicator
T aking Care of t he Unexpect ed
L ow Oil Pressure Indicator
Emergency T owingCharging System Indicator
242
NOTICE:
Running the engine with low
oil pressure can cause serious
mechanical damage almost immediately.
Turn of f the engine as soon as you can
saf ely get the vehicle stopped.

To check if they are set, turn the
ignition to ON (II), without starting
the engine. The Malf unction
Indicator Lamp will come on f or 20
seconds. If it then goes of f , the
readiness codes are set. If it blinks 5
times, the readiness codes are not
set. If possible, do not take your
vehicle f or a state emissions test
until the readiness codes are set.
Refer to State Emissions Testing for
more information (see page ).
If the indicator comes on
while driving, it means one
of the engine’s emissions
control systems may have a problem.
Even though you may f eel no
dif f erence in your vehicle’s
perf ormance, it can reduce your f uel
economy and cause increased
emissions. Continued operation may
cause serious damage.
If you have recently ref ueled your
vehicle, the indicator coming on
could be a loose or missing f uel f ill
cap. Tighten the cap until it clicks at
least three times. Tightening the cap
will not turn the indicator of f
immediately; it takes at least three
days of normal driving. If the indicator comes on repeatedly,
even though it may go of f as you
continue driving, have the vehicle
checked by the dealer as soon as
possible.
Your vehicle has certain ‘‘readiness
codes’’ that are part of the on-board
diagnostics f or the emissions
systems. In some states, part of the
emissions testing is to make sure
these codes are set. If they are not
set, the test cannot be completed.If your vehicle battery has been
disconnected or gone dead, these
codes are erased. If takes at least
three days of normal driving to set
the codes again.
263
Malf unction Indicator L amp
T aking Care of t he Unexpect ed
Readiness Code
243
NOTICE:If you keep driving with the
Malf unction Indicator Lamp on, you
can damage your vehicle’s emission
controls and the engine. Those repairs
may not be covered by your vehicle’s
warranties.

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#
) This manual covers maintenance and recommended
procedures f or repair to engine and chassis components.
It is written f or the journeyman mechanic, but is simple
enough f or most mechanically-inclined owners to under-
stand.
This manual complements the Service Manual by
providing in-depth troubleshooting inf ormation f or each
electrical circuit in your vehicle.
This manual describes the procedures involved in the
replacement of damaged body parts.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
270
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CONT INUED
BatteryCharging System ...........................
Indicator .52, 242
............................
Jump Starting .238
..............................
Maintenance .226
............................
Specif ications .257
..............................
Bef ore Driving .163
....................................
Belts,Seat .8,19
...........................
Beverage Holder .106
Brakes ...........
Anti-lock System (ABS) . 189
.............
Break-in, New Linings . 164
...........................................
Fluid .211
.......................................
Parking .103
.................
System Indicator . 52,244 ........................
Wear Indicators .188
.............................
Braking System .188
........................
Break-in, New Car .164
..
Brightness Control, Instruments . 75
........................
Brights, Headlights .74
Bulb Replacement ..........................
Back-up Lights .216
.................................
Fog Lights .213
............................
Specif ications .257
............
Turn Signal Lights . 214,215
..............................
Bulbs, Halogen .213
............................
Capacities Chart .256
.............
Carbon Monoxide Hazard . 46
............................
Carrying, Cargo .171
Cassette Player ............................................
Care .138
...................................
Operation .136
..............
CAUTION, Explanation of . ii
..................................
Ceiling Light .104
........................
Certif ication Label .254
...................................
Chains, .225
...
Accessories and Modif ications . 168
................................
Accessories .169
............................
Modif ications .170
ACCESSORY (Ignition Key .......................................
Position) .80
............
Accessory Power Sockets . 106
................
Adding Engine Coolant . 207
........................
Adding Engine Oil .204
....................
Additives, Engine Oil . 205
...............................
Airbag (SRS) .9, 22
...............
Additional Information . 22
......................................
Servicing .28
...................
System Components . 22
..............
Air Conditioning System . 110
.......................
Air Pressure, Tires .221
......................................
Antif reeze .207
Anti-lock Brakes (ABS) ...............................
Indicator .53, 189
...................................
Operation .189
..............
Anti-thef t, Audio System . 140
.
Anti-thef t Steering Column Lock . 80
................................
Audio System .117
...
Automatic Lighting Off Feature . 76
...
Automatic Seat Belt Tensioners . 20.............
Automatic Speed Control . 142
..............
Automatic Transmission . 181
..........................
Capacity, Fluid .256
...............
Checking Fluid Level . 209
.......................................
Shif ting .181
.
Shif t Lever Position Indicator . 181
.......................................
Shif ting .181
....................
Shif t Lock Release . 185
tires
Index
A
BC
I