2003 HONDA PILOT head

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Torque the spark plug. (If you do
not have a torque wrench, tighten
the spark plug two-thirds of a turn
af ter it contacts the cylinder head.)
Tightening torque:Spark Plug Gap:
Install the ignition coil. Reinstall
the hexagon socket head cap bolt.
Push the wire connector onto the
ignition coil. Make sure it locks in
place.
Repeat this procedure f or the
other f ive spark plugs.
Reinstall the cover on the front
cylinder bank while putting its
mounting clip in the hole on the
passenger’s side. Secure the cover
by turning the heads of the two
holding clips one-quarter turn
clockwise with a f lat-tipped
screwdriver. NGK:
DENSO:
8. 9.
10.
11. 12. Specif ications:
Spark Plugs
Maint enance301
13 lbf·ft (18 N·m , 1.8 kgf·m)
0.04 in (1.1 mm)
PKJ16CR-L11 PZFR5F-11
0
0.1 mm
Tighten the spark plugs caref ully. A
spark plug that is too loose can
overheat and damage the engine.
Overtightening can cause damage to
the threads in the cylinder head.

Check the operation of your vehicle’s
exterior lights at least once a month.
A burned out bulb can create an
unsaf e condition by reducing your
vehicle’s visibility and the ability to
signal your intentions to other
drivers.
Lights
Maint enance315
PARKING LIGHT/
SIDE MARKER
TURN SIGNAL/
PARKING LIGHT
HEADLIGHT

Check the f ollowing:Headlights
Parking lights
Taillights
Brake lights
Turn signals
Back-up lights
High-mount brake light
Hazard light f unction
License plate lights
Side marker lights
Daytime running lights
(Canadian models)
If you f ind any bulbs are burned out,
replace them as soon as possible.
Refer to the chart on page to
determine what type of replacement
bulb is needed. 363
Lights
Maint enance316
SIDE MARKER LIGHT
LICENSE PLATE LIGHTS
BACK-UP LIGHT
TURN SIGNAL/
HAZARD LIGHT/
TAIL LIGHT
STOP/TAIL LIGHT HIGH-MOUNT BRAKE LIGHT

CONT INUED
Theheadlightswereproperlyaimed
when your vehicle was new. If you
regularly carry heavy items in the
cargo area or pull a trailer,
readjustment may be required.
Adjustment of the headlights should
be perf ormed by a Honda technician
or other qualif ied mechanic.Your vehicle has halogen headlight
bulbs. When replacing a bulb, handle
it by its steel base and protect the
glass from contact with your skin or
hard objects. If you touch the glass,
clean it with denatured alcohol and a
clean cloth.
Open the hood. Remove the electrical connector
f rom the bulb by pulling the
connector straight back.
Remove the rubber weather seal
by pulling on the tab.
Unclip the end of the hold-down
wire f rom its slot. Pivot it out of
the way and remove the bulb.
1.
2.
3.
4.
Replacing a Headlight Bulb
Headlight A iming
Lights
Maint enance317
CONNECTOR
BULB
Halogen headlight bulbs get very hot
when lit. Oil, perspiration, or a scratch
on the glass can cause the bulb to
overheat and shatter.

Insert the new bulb into the hole,
making sure the bulb is right side
up and the nubs on the base f it
into the indentations in the
headlight assembly. Pivot the hold-
down wire back in place, and clip
the end into the slot.
Install the rubber seal over the
back of the headlight assembly.
Make sure one of its arrows is
pointing up.
Push the electrical connector onto
the new bulb.
Turn on the headlights to test the
new bulb.Remove the socket from the
headlight assembly by turning it
one-quarter turn counterclockwise.
To remove the f ront turn signal
bulb, push it in slightly and turn it
counterclockwise.Install the new bulb into the
socket.
Insert the socket back into the
headlight assembly. Turn it
clockwise to lock it in place.
Turn on the lights to make sure
the new bulb is working.
1.
2. 3.
4.
5.
5.
6.
7.
Lights
Maint enance
Replacing a Front T urn Signal/
Parking L ight Bulb
318

If you are changing the bulb on
the driver’s side, start the engine,
turn the steering wheel all the way
to the right, and turn off the
engine. If you are changing the
bulb on the passenger’s side, turn
the steering wheel to the left.
Use a f lat-tipped screwdriver to
remove the f ive holding clips f rom
the inner f ender.Pull the inner f ender cover away
f rom the f ender and bumper.
Remove the socket from the
headlight assembly by turning it
one-quarter turn counterclockwise.Pull the burned out bulb straight
out of its socket.
Push the new bulb straight into
the socket until it bottoms.
Insert the socket back into the
headlight assembly. Turn it
clockwise to lock it in place.
Turn on the lights to make sure
the new bulb is working.
Put the inner f ender in place.
Install the f ive holding clips. Lock
each clip in place by pushing on
the center.
1.
2. 3.
4.
8. 6.
7. 5.
Lights
Replacing a Front Side Marker
Light Bulb
Maint enance319
HOLDING CLIP

The individual map lights, tailgate
light, and the vanity mirror lights
come apart the same way. They do
not all use the same bulb.Removethelensbycarefully
prying on the edge of the lens with
a f ingernail f ile or a small f lat-tip
screwdriver. Do not pry on the
edge of the housing around the
lens.
Pull the light assembly out of the
tailgate.
Remove the socket f rom the light
assembly by turning it one-quarter
turn counterclockwise.
Pull the bulb straight out of its
socket. Push a new bulb straight
into the socket until it bottoms.
Place a cloth on the middle edge
of a part of the lens on the
passenger’s side. Remove a part of
the lens by caref ully prying on its
edge with a small f lat-tipped
screwdriver.
Use a Phillips-head screwdriver to
remove the screw under the lens.
1.
1.
2. 3.
4.
5.
Lights
Maint enance
Replacing Bulbs in the Interior
Lights
Replacing a High-mount Brake
Light Bulb
322
FRONT INDIVIDUAL MAP LIGHT
SCREW

Diagnosing why your 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.
Check these things: Check the transmission interlock.
The transmission must be in Park
orNeutralorthestarterwillnot
operate.
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
thefusesareOK,thereisproba-
bly something wrong with the
electrical circuit for the ignition
switch or starter motor. You will
need a qualif ied technician to
determine the problem. (See on page .)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
).
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 the proper starting
procedure? Ref er to on page .
343
358 302
343
232
Nothing Happens or the Starter
Motor Operates Very Slowly Jump Starting
Emergency T owingT he Starter Operates Normally
Starting the
Engine
T aking Care of t he Unexpect ed
If Your Engine Won’t Start
342