check engine Acura MDX 2004 Owner's Guide

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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
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
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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.

CONT INUED
...
Accessories and Modif ications . 163
ACCESSORY (Ignition Key .......................................
Position) .79
............
Accessory Power Sockets . 101
....................
Additives, Engine Oil . 206
...............................
Airbag (SRS) .9, 22
..............
Air Conditioning System . 104
.....................
Rear A/C Control .109
.........................................
Usage .105
.......................
Air Outlets (Vents) .106
.......................
Air Pressure, Tires .221
......................................
Antif reeze .208
Anti-lock Brakes (ABS) ....................
Indicator Light .59, 181
...................................
Operation .181
..............
Anti-thef t, Audio System . 129
.
Anti-thef t Steering Column Lock . 79
................
Audio System . 110,115,125
...
Automatic Seat Belt Tensioners . 20
.........................
Automatic Lighting .73
.............
Automatic Speed Control . 144
..............
Automatic Transmission . 172
..........................
Capacity, Fluid .254
...............
Checking Fluid Level . 210.......................................
Shif ting .172
.
Shif t Lever Position Indicator . 172
................
Shif t Lever Positions . 172
....................
Shif t Lock Release . 175
...........................
Automatic Wipers .70
Battery Charging System ...........................
Indicator .58, 242
............................
Jump Starting .238
..............................
Maintenance .226
............................
Specif ications .255
..............................
Bef ore Driving .157
....................................
Belts,Seat .8,19
...........................
Beverage Holders .99
..................................
Booster Seats .48
Brakes ...........
Anti-lock System (ABS) . 181
.............
Break-in, New Linings . 158
...........................................
Fluid .212
....................
Bulb Replacement .216
.........................................
Parking .92
.................
System Indicator . 59,244
........................
Wear Indicators .180 .............................
Braking System .180
.................
Break-in, New Vehicle . 158
..
Brightness Control, Instruments . 74
........................
Brights, Headlights .72
Bulb Replacement ..........................
Back-up Lights .216
..............................
Brake Lights .216
................
Front Parking Lights . 215
........
Front Side Marker Lights . 215
.................................
Headlights .214
.........
High-mount Brake Light . 217
.................................
Rear Bulbs .216
............................
Specif ications .255
....................
Turn Signal Lights . 215
..............................
Bulbs, Halogen .214
Index
A
B
I

Î
................
DANGER, Explanation of . ii
...................................
Dashboard .2, 56
................
Daytime Running Lights . 74
.................................
Dead Battery .238
............
Def ects, Reporting Saf ety . 268
................
Def ogger, Rear Window . 75
..............
Def rosting the Windows . 107
..........................
Dif f erential Fluid .211
....................................
Dimensions .254
...............
Dimming the Headlights . 72
Dipstick ..........
Automatic Transmission . 210
..................................
Engine Oil .161
..........................
Directional Signals .72
........
Disc Brake Wear Indicators . 180
.....................
Disposal of Used Oil .207
Doors ..............
Locking and Unlocking . 80
....................
Lockout Prevention . 80
......................
Power Door Locks .80
................................
Cancel Button .144
............................
Capacities Chart .254
.............
Carbon Monoxide Hazard . 51
.............................
Carrying Cargo .165
Cassette Player ............................................
Care .127
...................................
Operation .125
..............
CAUTION, Explanation of . ii
.........................................
CD Care .119
..........................
CD Changer .116, 117
.....
CD Changer Error Messages . 122
.......................................
CD Player .116
.........
CD Player Error Messages . 120
........................
Certif ication Label .252
...................................
Chains, .225
Change Oil ........................................
How to .206
......................................
When to .197
....................
Changing a Flat Tire .231
...
Charging System Indicator . 58,242
............
Checklist, Bef ore Driving . 170
..................
Childproof Door Locks . 80
.....................................
Child Saf ety .33
..............................
Booster Seats .48 .............................
Child Seats .40, 41
.....
Important Saf ety Reminders . 36
..........................................
Inf ants .38
..........................
Larger Children .47
.........................................
LATCH .42
......................
Risks with Airbags .34
.............................
Small Children .39
..........................................
Tether .45
.........
Where Should a Child Sit? . 34
.......................................
Child Seats .40
..........
Tether Anchorage Points . 45
...............
Climate Control System . 104
..............................................
Clock .130
.....................
Code, Audio System .129
........................
CO in the Exhaust .259
......................
Compact Spare Tire .230
...............
Consumer Inf ormation . 266
.............
Controls, Instruments and . 55
Coolant ........................................
Adding .208
....................................
Checking .162
.........................
Proper Solution .208
...................
Temperature Gauge . 67
Crankcase Emissions Control ........................................
System .259
................
Cruise Control Indicator . 61............
Cruise Control Operation . 144
.....................................
Cup Holders .99
..........
Customer Relations Of f ice . 266
tires
Index
C
D
II

CONT INUED
...................................
Fan, Interior .105
Features, Comfort and ..............................
Convenience .103
....................
Filling the Fuel Tank . 159Filters
...............................................
Oil .206
.............
Flashers, Hazard Warning . 74
...................
Flat Tire, Changing a . 231
Fluids ..........
Automatic Transmission . 210
..........................................
Brake .212
......................
Dif f erential Fluid .211
..........................
Power Steering .213
...................
Transf er Assembly . 211
..................
Windshield Washer . 209
FM Stereo Radio ...................................
Reception .113
........................................
Fog Lights .75
................
Folding the Second Seat . 87
...................
Folding the Third Seat . 88
..........................
Four-way Flashers .74
........................................
Front Seat .84
......................................
Adjusting .84
.........................................
Airbags .23
.........................................
Heaters .89
..........
DOT Tire Quality Grading . 256
...........
Driver and Passenger Safety . 5
...........................................
Driving .169
....................................
Economy .162
Driving Position Memory ..........................................
System .94
..................
DVD Error Messages . 140
...................................
DVD Player .133
..............................
Economy, Fuel .162
..................................
Emergencies .229
.............
Battery, Jump Starting . 238
...........
Brake System Indicator . 244
................
Changing a Flat Tire . 231
.....
Charging System Indicator . 242
..................
Checking the Fuses . 246
.........
Hazard Warning Flashers . 74
.....
Low Oil Pressure Indicator . 242
...
Malf unction Indicator Lamp . 243
..................
Overheated Engine . 240
.......................................
Towing .244
...........................
Emergency Brake .92
......................
Emergency Flashers .74
......................
Emergency Towing .244 .......................
Emissions Controls .259
Engine ....
Coolant Temperature Gauge . 67
Malf unction Indicator ................................
Lamp .58, 243
........
Oil Pressure Indicator . 58,242
..............
Oil, What Kind to Use . 205
...............................
Overheating .240
............................
Specif ications .255
............................
Speed Limiter .174
.......................................
Starting .171
...................
Engine, .237
.
Evaporative Emissions Controls . 259
...............................
Exhaust Fumes .51
Exhaust Gas Recirculation ........................................
System .260
Expectant Mothers, Use of Seat ........................................
Belts by .17
if it won’t start
Index
E
F
III

.................................................
Fuel .158
......................
Fill Door and Cap .159
...........................................
Gauge .66
................
Octane Requirement . 158
...............................
Oxygenated .158
........................
Reserve Indicator .61
........................
Tank, Filling the .159
.....................
Fuses, Checking the .246
.............
Halogen Headlight Bulbs . 214
..............
Hazard Warning Flashers . 74
........................................
Headlights .72
........................................
Aiming .214
....................
Automatic Lighting .73
............
Daytime Running Lights . 74
..................
High Beam Indicator . 61
...........
High Beams, Turning on . 72
............
Low Beams, Turning on . 72
.........................
Reminder Chime .72
........
Replacing Halogen Bulbs . 214
...................................
Turning on .72
...................................
Headphones .141
..............................
Head Restraints .86
.................................
Heated Mirror .93
.................................
Heaters, Seats .89
.....................
Heating and Cooling .104 .................
High-Low Beam Switch . 72
HomeLink Universal ................................
Transceiver .153
....................................
Hood Latch .214
.......................
Hood, Opening the .160
..................................................
Horn .68
...............
Gas Mileage, Improving . 162
.........................................
Gasoline .158
...............
Fuel Reserve Indicator . 61
...........................................
Gauge .66
................
Octane Requirement . 158
........................
Tank, Filling the .159
................
Gas Station Procedures . 159
Gauges ...
Engine Coolant Temperature . 67
...............................................
Fuel .66
...............................
Speedometer .66
.................................
Tachometer .66
GAWR (Gross Axle Weight .......................................
Rating) .185 GCWR (Gross Combined Weight
.......................................
Rating) .185
............
Gearshif t Lever Positions . 172
........................................
Glove Box .99
GVWR (Gross Vehicle Weight .......................................
Rating) .185
...
Identif ication Number, Vehicle . 252
Ignition ..............................................
Keys .77
...........................................
Switch .79
............
Timing Control System . 260
........................
Immobilizer System .78
.........
Important Safety Precautions . 6
.........
Indicators, Instrument Panel . 58
...............
ABS (Anti-lock Brake) . 59
....................................
A/T Temp .62
Brake (Parking and Brake ....................................
System) .59
.................................
Brake Lamp .60
........................
Charging System .58
.............................
Cruise Control .61
DRL (Daytime Running ......................................
Lights) .61
Index
G HI
IV

.............
Memory, Driving Position . 94
...............................
Meters, Gauges .66
..........................
Mirrors, Adjusting .92
...............
Modif ying Your Vehicle . 164
.........................................
Moonroof .91
...................
Neutral Gear Position . 173
..................
New Vehicle Break-in . 158
...................
NOTICE, Explanation of . i
...............
Numbers, Identif ication . 252
...
Octane Requirement, Gasoline . 158
.........................................
Odometer .66
...............................
Odometer, Trip .67
....................
Of f -Highway Driving . 192
...................
Of f -Road Precautions . 192
Oil ........................
Change, How to .206
......................
Change, When to .199
......................
Checking Engine .161
..............
Pressure Indicator . 58,242 Selecting Proper Viscosity
......................................
Chart .205
...........
ON (Ignition Key Position) . 79
..............................
Outside Mirrors .92
....................
Overheating, Engine .240
....
Owner’s Maintenance Checks . 198
.........................
Oxygenated Fuels .158
..............
Panel Brightness Control . 74
........................
Park Gear Position .173
...........................................
Parking .179
.................................
Parking Brake .92
.................................
Parking Lights .72
..
Parking Over Things that Burn . 261
.............................
PGM-FI System .260
................
Power Seat Adjustments . 84
...............
Power Socket Locations . 101
.........
Pregnancy, Using Seat Belts . 17
.........
Protecting Adults and Teens . 11
...
Additional Safety Precautions . 17
.....
Advice f or Pregnant Women . 17
........................
Protecting Children .33
.....................
General Guidelines .33
.......................
Protecting Inf ants .38 .......
Protecting Larger Children . 47
.........
Protecting Small Children . 39
Using Child Seats with .....................................
Tethers .45
.............................
Using LATCH .42
...................
Radiator Overheating . 240
Radio/CD/Cassette Sound .......................
System .110, 115,125
...............................
Rear A/C Unit .109
............
Rear Audio Control Panel . 135
........
Rear Entertainment System . 131
..
Rear Lights, Bulb Replacement . 216
............................
Rear View Mirror .92
.................
Rear Window Def ogger . 75
.
Rear Window Wiper and Washer . 71
.........
Reclining the Seat Backs . 84,85
...........
Reclining the Second Seats . 87
................
Reclining the Third Seat . 88
.............................
Reminder Lights .58
................
Remote Audio Controls . 128
.................
Remote Control (RES) . 137
.......................
Remote Transmitter .81
Index
N
O P
R
VI

.............................
SRS Indicator .28 ,58
....
START (Ignition Key Position) . 79
.......................
Starting the Engine .171
................
With a Dead Battery . 238
........
Steam Coming f rom Engine . 240
Steering Wheel ..................................
Adjustment .76
.............
Anti-theft Column Lock . 79
...
Stereo Sound System . 110,115,125
....................
Storing Your Vehicle .227
........................................
Sun Visor .100
Supplemental Restraint System ......................................
Servicing .31
.........................
SRS Indicator .28 ,58
...................
System Components . 22
..................................
Synthetic Oil .206
.....................................
Tachometer .66
......
Taillights, Changing Bulbs in . 216
.
Taking Care of the Unexpected . 229
....................................
Tape Player .125
Technical Descriptions ......
DOT Tire Quality Grading . 256
.....
Emissions Control Systems . 259Three Way Catalytic
...............................
Converter .261
.......................
Temperature Gauge .67
...................
Tensioners, Seat Belts . 20
............................
Thef t Protection .129
..
Three Way Catalytic Converter . 261
....................................
Timing Belt .213
....................................
Tire Chains .225
.........
Tire, How to Change a Flat . 231
.................................
Tire Labeling .258
Tire Pressure Monitoring ....................
System (TPMS) .178
Low Tire Pressure ...........................
Indicator .64, 177
.......
Tire Pressure Monitor . 64,178
..................
TPMS Indicator . 64,178
...............................................
Tires .221
..............................
Air Pressure .221
.........................
Checking Wear .222
..........................
Compact Spare .230
......
DOT Tire Quality Grading . 256
......................................
Inf lation .221
..................................
Inspection .222
..............................
Maintenance .223
...................................
Replacing .224
......................................
Rotating .223 ...........................................
Snow .225
............................
Specif ications .255
................................
Tire Chains .225
Towing .....................................
A Trailer .188
................
Emergency Wrecker . 244
....
Equipment and Accessories . 188
.............................
Weight Limit .185
Your Vehicle Behind a ............................
Motorhome .190
.........................
Trailer Loading .185
.................
Trailer Towing Tips . 189
.............
Transf er Assembly Fluid . 211
Transmission ...............
Checking Fluid Level . 210
...........................
Fluid Selection .210
..............
Identif ication Number . 252
.............
Shif ting the Automatic . 172
.....................................
Treadwear .256
.......................................
Trip Meter .67
....................................
Turn Signals .72
...................
Tools, Tire Changing . 231
Index
T
VIII