2004 HONDA PILOT check engine

µ
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.
If the booster battery is in another
vehicle, have an assistant start
that vehicle and run it at a fast idle. Start your vehicle. If the starter
motor still operates slowly, check
that the jumper cables have good
metal-to-metal contact.
Once your vehicle is running,
disconnect the negative cable f rom
your vehicle, then f rom the
booster battery. Disconnect the
positive cable f rom your vehicle,
and then from the booster battery.
Keep the ends of the jumper cables
away from each other and any metal
on the vehicle until everything is
disconnected. Otherwise, you may
cause an electrical short.
4.
5. 6.
7.
T aking Care of t he Unexpect ed
Jump Starting
203

The pointer of your vehicle’s
temperature gauge should stay in
the midrange. If it climbs to the red
mark, you should determine the
reason (hot day, driving up a steep
hill, etc.).
If your vehicle overheats, you should
take immediate action. The only
indication may be the temperature
gauge climbing to or above the red
mark. Or you may see steam or
spray coming f rom under the hood.Saf ely pull to the side of the road.
Put the transmission in Neutral or
Park, and set the parking brake.
Turn of f all the accessories, and
turn on the hazard indicator.
If you see steam and/or spray
coming f rom under the hood, turn
of f the engine. Wait until you see
no more signs of steam or spray,
then open the hood.If you do not see steam or spray,
leave the engine running and
watch the temperature gauge. If
the high heat is due to overloading,
the engine should start to cool
down almost immediately. If it
does, wait until the temperature
gauge comes down to the midpoint,
then continue driving.
If the temperature gauge stays at
the red mark, turn of f the engine.
Look f or any obvious coolant leaks,
such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you f ind a leak, it
must be repaired bef ore you
continue driving (see
on page ).
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.
5.
6. 4.
1.
2. 3.
208
If theEngineOverheats
Emergency
Towing
T aking Care of t he Unexpect ed204
NOTICE:
Steam and spray from an
overheated engine can
seriously scald you.
Do not open the hood if steam
is coming out. Driving with the temperature
gauge pointer at the red mark can
cause serious damage to your engine.

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.
Using gloves or large heavy cloth,
turn the radiator cap
counterclockwise without pushing
down to the first stop. After the
pressure releases, push down on
the cap, and turn it until it comes
off.Start the engine and set the
temperature control dial to
maximum (climate control to
FULL AUTO at 90°F/32°C). 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 (see
on 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.
7.
8.
9.
11. 10.
208Emergency
Towing
If theEngineOverheats
T aking Care of t he Unexpect ed205
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.

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 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 light. If it does not go out
within ten seconds, turn off the
engine. There is a mechanical
problem that needs to be repaired
bef ore you can continue driving.
(Seeon page
).
This light 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. Saf ely pull of f the road, and shut
of f the engine. Turn on the hazard
warning lights.
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.
171
127
208
L ow Oil Pressure Indicator
Emergency T owingCharging System Indicator
T aking Care of t he Unexpect ed
L ow Oil Pressure L ight, Charging System Indicator
206
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.

If the indicator comes on
while driving, it means one
of the engine’s emission control
systems may have a problem. Even
though you may f eel no dif f erence in
your vehicle’s perf ormance,
continued operation may cause
serious damage.
If you have recently ref ueled your
vehicle, the cause of this indicator
coming on could be a loose or
missing f uel f ill cap. Check the cap
or replace it. Tightening the cap will
not make the indicator turn of f
immediately; it takes at least three
days of normal driving.
If the indicator remains on or the
f uel cap was not loose or missing,
have the vehicle checked by the
dealer as soon as possible. If the malf unction indicator lamp
comes on along with the ‘‘D’’
indicator, there is a problem in the
automatic transmission control
system.
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. It takes at least
three days of driving under various
conditions to set the codes again.
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 ).
226
Malf unction Indicator L amp
Readiness Code
Malf unction Indicator
T aking Care of t he Unexpect ed207
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. Body Repair Manual: Electrical T roubleshooting Manual: Service Manual:
Authorized Manuals
234
NOTE: Dealers and Companies please provide dealer or company name,
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below for a quotation.
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Daytime Telephone Number
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()
These Publications cannot be returned for credit without receiving advance authorization within 14
days of delivery. On returns, a restocking fee may be applied against the original order.

CONT INUED
BatteryCharging System ...........................
Indicator .48, 206
............................
Jump Starting .202
..............................
Maintenance .193
............................
Specif ications .219
..............................
Bef ore Driving .123
....................................
Belts,Seat .8,16
...........................
Beverage Holders .77
..................................
Booster Seats .39 Brakes
...........
Anti-lock System (ABS) . 145
.............
Break-in, New Linings . 124
...........................................
Fluid .178
....................
Bulb Replacement .182
.........................................
Parking .75
.................
System Indicator . 49,208
........................
Wear Indicators .145
.............................
Braking System .144
.................
Break-in, New Vehicle . 124
..
Brightness Control, Instruments . 59
........................
Brights, Headlights .58
Bulb Replacement ..............................
Brake Lights .182
................
Front Parking Lights . 181
........
Front Side Marker Lights . 183
.................................
Headlights .180
........
High-mount Brake Lights . 182
.................................
Rear Bulbs .182
............................
Specif ications .219
.............
Turn Signal Light . 181,182
..............................
Bulbs, Halogen .180
...
Accessories and Modif ications . 129
ACCESSORY (Ignition Key .......................................
Position) .64
..............
Accessory Power Sockets . 77
....................
Additives, Engine Oil . 172
...............................
Airbag (SRS) .9, 19
.....
Airbags, Additional Infomation . 19
...
Additional Safety Precautions . 24
.............................
Airbag Service .24
How the Side Airbag Of f ......................
Indicator Works .23
..
How the SRS Indicator Works . 23
How Your Front Airbags .........................................
Work .20
...
How Your Side Airbags Work . 22
........................
SRS Components .19
................
Air Conditioning System . 82
.......................
Rear A/C Control .87
.......................
Air Pressure, Tires .188
......................................
Antif reeze .174
Anti-lock Brakes (ABS) ....................
Indicator Light .49, 146
...................................
Operation .145
..............
Anti-thef t, Audio System . 102 .
Anti-thef t Steering Column Lock . 64
..................................
Audio System .88
...
Automatic Seat Belt Tensioners . 18
...
Automatic Lighting Off Feature . 58
.............
Automatic Speed Control . 116
..............
Automatic Transmission . 138
..........................
Capacity, Fluid .218
...............
Checking Fluid Level . 176
.......................................
Shif ting .138
.
Shif t Lever Position Indicator . 138
................
Shif t Lever Positions . 139
....................
Shif t Lock Release . 141
Index
A
B
I

Î
................................
Cancel Button .117
............................
Capacities Chart .218
.............
Carbon Monoxide Hazard . 42
........................
Cargo, .131
Cassette Player ..............................................
Care .95
.....................................
Operation .98
..............
CAUTION, Explanation of . ii
...........................................
CD Care .95
.....................................
CD Changer .94
.........
CD Changer Error Message . 97
.........................................
CD Player .93
.............
CD Player Error Message . 96
........................
Certif ication Label .216
...................................
Chains, .192
....................
Changing a Flat Tire .197
Change Oil ........................................
How to .172
.............................
When to .164, 165
...
Charging System Indicator . 48,206
............
Checklist, Bef ore Driving . 136
..................
Childproof Door Locks . 65
.....................................
Child Saf ety .25
..............................
Booster Seats .39 ...................................
Child Seats .30
.....
Important Saf ety Reminders . 25
..........................................
Inf ants .29
..........................
Larger Children .38
.........................................
LATCH .33
......................
Risks with Airbags .26
.............................
Small Children .30
.........................................
Tethers .37
.........
Where Should a Child Sit? . 26
Child Seats .........................................
LATCH .33
...........................
Lower Anchors .33
..........
Tether Anchorage Points . 37
.................
Climate Control System . 86
.........................
Clock, Setting the .103
..............................................
Clock .103
.....................
Code, Audio System .102
........................
CO in the Exhaust .223
............
Cold Weather, Starting in . 137
.......................
Compact Spare .196
...................
Console Compartment . 77
...............
Consumer Inf ormation . 230
.............
Controls, Instruments and . 45
Coolant ........................................
Adding .174
....................................
Checking .127 .........................
Proper Solution .174
...................
Temperature Gauge . 55
Crankcase Emissions Control ........................................
System .223
................
Cruise Control Indicator . 51
............
Cruise Control Operation . 116
.....................................
Cup Holders .77
....
Customer Service Inf ormation . 230
................
DANGER, Explanation of . ii
...................................
Dashboard .2, 46
................
Daytime Running Lights . 59
Daytime Running Lights .......................................
Indicator .51
.................................
Dead Battery .202
............
Def ects, Reporting Saf ety . 232
................
Def ogger, Rear Window . 60
..........
Def rosting the Windows . 83,85
....................................
Dimensions .218
...............
Dimming the Headlights . 58
Dipstick ..........
Automatic Transmission . 176
..................................
Engine Oil .127
..........................
Directional Signals .58
how to carry
tires tire
Index
C
D
II