2002 Acura MDX check engine

If possible, do not take your vehicle
f or a state emissions test until the
readiness codes are set. To check if
they are set, turn the ignition ON (II),
but do not start 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. Ref er to State
Emissions Testing f or more
inf ormation.(See page .)
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’s battery has been
disconnected or gone dead, these
codes are erased. It takes several
days of driving under various
conditions to set the codes again.
351
T aking Care of t he Unexpect ed
Malf unction Indicator L amp
Readiness Codes
330
01/09/07 12:47:49 31S3V610_335

However, if the brake pedal does not
f eel 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 f eel the brake pedal
go down much f arther bef ore the
vehicle begins to slow down, and you
will have to press harder on the
pedal. The distance needed to stop
will be much longer. If it comes on at any other time, it
indicates a problem with the vehicle’s
brake system. In most cases, the
problem is a low f luid level in the
brake f luid reservoir. Press lightly on
the brake pedal to see if it f eels
normal. If it does, check the brake
f luid level the next time you stop at a
service station (see page ). If the
f luid level is low, take the vehicle to
your dealer and have the brake
system inspected f or leaks or worn
brake pads.Slow down by shif ting to a lower
gear, and pull to the side of the road
when it is saf e. Because of the
longer distance needed to stop, it is
hazardous to drive the vehicle. You
should have it towed, and repaired as
soon as possible. (See
on page .)
If you must drive the vehicle a short
distance in this condition, drive
slowly and cautiously.
The Brake System Indicator comes
on when you turn the ignition ON
(II). If the parking brake is not set, it
goes of f af ter you start the engine. If
the parking brake is set, it goes of f
when you f ully release the parking
brake with the engine running. 273
338Emergency
Towing
Brake System Indicator
T aking Care of t he Unexpect ed331
B BR RAA K
KEE S
SYYSSTTE
EM
M I
INND DI
ICCA A T
TO
OR R
U
U. .S
S. .i
inn d
di
icca at too r
r s
shh o
ow
wn n
01/09/07 12:47:58 31S3V610_336

If something electrical in your
vehicle stops working, the first thing
youshouldcheckforisablownfuse.
Determine f rom the chart on pagesand , or the diagram on the
f use box lid (the diagram f or the
driver’s side interior f use box is on
the kick panel below the f use box),
which f use or f uses control that
component. Check those f uses f irst,
but check all the f uses bef ore
deciding that a blown f use is not the
cause. Replace any blown f uses and
check the component’s operation.
Turn the ignition switch to LOCK
(0). Make sure the headlights and
all other accessories are off.
Remove the cover f rom the f use
box.
The secondary f use box is in the
engine compartment next to the
battery.
The primary under-hood f use box is
located in the back of the engine
compartment on the passenger’s side.
To open it, push the tabs as shown. 1.
2.336 337
CONT INUED
Checking and Replacing Fuses
Fuses
T aking Care of t he Unexpect ed333
U UN
NDDE
ER
R- -H
H O
OO ODD
U
UN NDDE
ER
R- -H
H O
OO ODD
01/09/07 12:48:15 31S3V610_338

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#
) 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. 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. Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
Authorized Manuals
358
NOTE: Dealers and Companies please provide dealer or company name,
and also the name of the person to whose attention the shipment should
be sent. For purchases outside U.S.A. please write to the address shown
below for a quotation.
P.O. BOX 07280·DETROIT, MICHIGAN 48207·1-800-782-4356
Customer Name Attention
Apartment Number
State & Zip Code
City
Daytime Telephone Number
Check or money order enclosed payable to Helm Inc U.S. funds only.
Do not send cash
Master
Card VISA Check here if your billing address is different
from the shipping address shown above.
Account Number Expiration: Mo. Yr.
CUSTOMER SIGNATURE DATE
Street Address No P.O. Box Number
()
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.
01/09/07 12:52:09 31S3V610_363

CONT INUED
...
Accessories and Modif ications .201
................................
Accessories .201
...
Additional Safety Precaution .202
............................
Modif ications .202
ACCESSORY (Ignition Key .......................................
Position) .82
............
Accessory Power Sockets .115
....................
Additives, Engine Oil .262
...............................
Airbag (SRS) .9,50
.....................
Air Cleaner Element .275
..............
Air Conditioning System .124
..............................
Maintenance .284
.....................
Rear A/C Control .130
.........................................
Usage .124
.......................
Air Outlets (Vents) .122
.......................
Air Pressure, Tires .286
.......................
Alcohol in Gasoline .346
.......
Aluminum Wheels, Cleaning .307
......................................
Antif reeze .265
Anti-lock Brakes (ABS)
....................
Indicator Light .63,222
...................................
Operation .221
..............
Anti-thef t, Audio System .170
.
Anti-thef t Steering Column Lock .81 ..........................
Appearance Care .305
........................
Audio System .133,151
...
Automatic Seat Belt Tensioners .48
...
Automatic Lighting Off Feature .73
.............
Automatic Speed Control .172
..............
Automatic Transmission .211
..........................
Capacity, Fluid .342
...............
Checking Fluid Level .271
.......................................
Shif ting .212
.
Shif t Lever Position Indicator .211
................
Shif t Lever Positions .212
....................
Shif t Lock Release .215
Battery Charging System ...........................
Indicator .62,328
............................
Jump Starting .323
..............................
Maintenance .280
............................
Specif ications .343
..............................
Bef ore Driving .193
....................................
Belts,Seat .8,46
.........................
Beverage Holders .110
...................................
Body Repair .312 Brakes
...........
Anti-lock System (ABS) .221
.............
Break-in, New Linings . 194
...........................................
Fluid .273
....................
Bulb Replacement .298
.......................................
Parking .106
.................
System Indicator . 63,331
........................
Wear Indicators .220
.............................
Braking System .220
.................
Break-in, New Vehicle . 194
..
Brightness Control, Instruments . 73
........................
Brights, Headlights .72
Bulb Replacement ..........................
Back-up Lights .298
..............................
Brake Lights .298
......................
Cargo Area Light .301
................
Front Parking Lights . 296
........
Front Side Marker Lights . 296
.................................
Headlights .295
.........
High-mount Brake Light . 299
..............
Individual Map Lights . 300
...................
License Plate Light . 300
.................................
Rear Bulbs .298
............................
Specif ications .343
............
Turn Signal Lights . 296,298
Index
A
B
I
01/09/07 12:52:14 31S3V610_364

Î
..............................
Bulbs, Halogen .295
................................
Cancel Button .174
............................
Capacities Chart .342
.............
Carbon Monoxide Hazard .56
..........................
Cargo Area Light .119
.............................
Carrying Cargo .203
Cassette Player
............................................
Care .168
...........................
Operation .139,165
..............
CAUTION, Explanation of .ii
...................................
CD Changer .143
.......................................
CD Player .159
........................
Certif ication Label .340
............................................
Chains .292
Change Oil
........................................
How to .263
......................................
When to .252
....................
Changing a Flat Tire .315
............
Changing Engine Coolant .267
...
Charging System Indicator .62,328
............
Checklist, Bef ore Driving .209
..................
Childproof Door Locks .88
.....................................
Child Saf ety .21 .......................................
Child Seats .21
..........
Tether Anchorage Points .42
....................
Cleaner Element, Air .275
Cleaning
....................
Aluminum Wheels .307
...................................
Carpeting .308
......................................
Exterior .306
.........................................
Fabric .309
.......................................
Interior .308
.......................................
Leather .309
...................................
Seat Belts .309
...........................................
Vinyl .309
....................................
Windows .310
...............
Climate Control System .122
......................................
Coat Hook .116
.....................
Code, Audio System .170
........................
CO in the Exhaust .348
........................................
Coin Box .116
............
Cold Weather, Starting in .210
..............................
Compact Spare .314
...............
Consumer Inf ormation .354
.............
Controls, Instruments and .59
Coolant
........................................
Adding .265
....................................
Checking .199
.........................
Proper Solution .265 ...................................
Replacing .267
...................
Temperature Gauge .68
....................
Corrosion Protection .311
Crankcase Emissions Control
........................................
System .348
............
Cruise Control Operation .172
..........
Customer Relations Of f ice .354
................
DANGER, Explanation of .ii
...................................
Dashboard .2,60
................
Daytime Running Lights .73
............
Def ects, Reporting Saf ety .356
................
Def ogger, Rear Window .77
..............
Def rosting the Windows .128
....................................
Dimensions .342
...............
Dimming the Headlights .72
Dipstick
..........
Automatic Transmission .271
..................................
Engine Oil .198
..........................
Directional Signals .74
........
Disc Brake Wear Indicators .220
.....................
Disposal of Used Oil .264
Doors
..............
Locking and Unlocking .82
Index
C
D
II
01/09/07 12:52:20 31S3V610_365

CONT INUED
............................
Fabric, Cleaning .309
...................................
Fan, Interior .126 Features, Comfort and
..............................
Convenience .121
....................
Filling the Fuel Tank .195
Filters
...............................................
Air .275
.......................
Air Conditioning .285
...............................................
Oil .263
.............
Flashers, Hazard Warning . 76
...................
Flat Tire, Changing a . 315
Fluids ..........
Automatic Transmission . 271
..........................................
Brake .273
..........................
Power Steering .274
..................
Windshield Washer . 270
FM Stereo Radio ...................................
Reception .157
........................................
Fog Lights .77
...................
Folding the Third Seat . 96
.....
Foreign Countries, Driving in . 347
..........................
Four-way Flashers .76
..............................
Economy, Fuel .200
............
Emergencies on the Road . 313
.............
Battery, Jump Starting . 323
...........
Brake System Indicator . 331
................
Changing a Flat Tire . 315
.....
Charging System Indicator . 328
..................
Checking the Fuses . 333
.....
Low Oil Pressure Indicator . 327
...
Malf unction Indicator Lamp . 329
..................
Overheated Engine . 325
.........................
Emergency Brake .106
......................
Emergency Flashers .76
......................
Emergency Towing .338 .......................
Emissions Controls .348
Engine ....
Coolant Temperature Gauge . 68
.................................
Drive Belts .285
Malf unction Indicator ................................
Lamp .62, 329
........
Oil Pressure Indicator . 62,327
..............
Oil, What Kind to Use . 261
...............................
Overheating .325
............................
Specif ications .343
............................
Speed Limiter .215
.......................................
Starting .210
......................
Ethanol in Gasoline .346
.
Evaporative Emissions Controls . 348
...............................
Exhaust Fumes .56
Exhaust Gas Recirculation ........................................
System .349
Expectant Mothers, Use of Seat ........................................
Belts by .19
..................
Exterior, Cleaning the . 306
....................
Lockout Prevention . 83
......................
Power Door Locks .82
..........
DOT Tire Quality Grading . 344
.....................................
Drive Belts .285
...........
Driver and Passenger Safety . 5
...........................................
Driving .207
....................................
Economy .200
.........................
In Bad Weather .224
................
In Foreign Countries . 347
..................
Dust and Pollen Filter . 285
Index
E
F
III
01/09/07 12:52:26 31S3V610_366

.................................................
Fuel .194
......................
Fill Door and Cap .195
...........................................
Gauge .68
................
Octane Requirement .194
...............................
Oxygenated .346
........................
Reserve Indicator .65
........................
Tank, Filling the .195
.....................
Fuses, Checking the .333
...............
Gas Mileage, Improving .200
..........................................
Gasohol .346
.........................................
Gasoline .194
...............
Fuel Reserve Indicator .65
...........................................
Gauge .68
................
Octane Requirement .194
........................
Tank, Filling the .195
................
Gas Station Procedures .195
Gauges
...
Engine Coolant Temperature .68
...............................................
Fuel .68
...............................
Speedometer .67
.................................
Tachometer .67
GAWR (Gross Axle Weight .......................................
Rating) .227 GCWR (Gross Combined Weight
.......................................
Rating) .227
............
Gearshif t Lever Positions .212
..............................
Glass Cleaning .310
........................................
Glove Box .89
GVWR (Gross Vehicle Weight
.......................................
Rating) .227
.............
Halogen Headlight Bulbs . 295
..............
Hazard Warning Flashers . 76
........................................
Headlights .72
........................................
Aiming .295
..............
Automatic Lighting Off . 73
............
Daytime Running Lights . 73
..................
High Beam Indicator . 65
...........
High Beams, Turning on . 72
............
Low Beams, Turning on . 72
.........................
Reminder Chime .72
........
Replacing Halogen Bulbs . 295
...................................
Turning on .72
..............................
Head Restraints .94
...............................
Heated Mirror .106
.....................
Heating and Cooling .122
.............
High Altitude, Starting at . 210.................
High-Low Beam Switch . 72
HomeLink Universal ...............................
Transmitter .188
....................................
Hood Latch .277
.......................
Hood, Opening the .196
..................................................
Horn .71
.................................
Hydroplaning .225
...
Identif ication Number, Vehicle . 340
Ignition ..............................................
Keys .79
...........................................
Switch .81
............
Timing Control System . 349
........................
Immobilizer System .80
.........
Important Safety Precautions . 6
.........
Indicators, Instrument Panel . 61
..................
Individual Map Lights . 119
.........................
Inf ant Restraint .26, 30
................................
Inf ant Seats .26, 30
...................
Inf lation, Proper Tire . 286
.................................
Inside Mirror .104
.............................
Inspection, Tire .288
........................
Instrument Panel .2 ,60
........
Instrument Panel Brightness . 73
Index
G HI
IV
01/09/07 12:52:32 31S3V610_367