2002 Acura MDX cooling

Run the air conditioning at least once
a week during the cold weather
months. Run it f or at least ten
minutes while you are driving at a
steady speed with the engine at
normal operating temperature. This
circulates the lubricating oil con-
tained in the ref rigerant.If the air conditioning does not get as
cold as before, have your dealer
check the system. Recharge the
system with Ref rigerant HFC-134a
(R-134a). (See Specif ications on page
.)
Your vehicle’s air conditioning is a
sealed system. Any major mainte-
nance, such as recharging, should be
done by a qualif ied mechanic. You
can do a couple of things to make
sure the air conditioning works
ef f iciently.
Periodically check the engine’s
radiator and air conditioning
condenser f or leaves, insects, and
dirt stuck to the f ront surf ace. These
block the air f low and reduce cooling
ef f iciency. Use a light spray f rom a
hose or a sof t brush to remove them. 342
A ir Condit ioning Syst em
Maint enance284
A A
I
IRR C
COON NDDI
ITT I
IOON NIINNG G
C
CO ON NDDE
EN
NS SEER
R
Whenever you have the air conditioning
system serviced, make sure the service
f acility uses a ref rigerant recycling
system. This system captures the
ref rigerant f or reuse. Releasing
ref rigerant into the atmosphere can
damage the environment.
The condenser and radiator f ins bend
easily. Only use a low-pressure spray
or sof t-bristle brush to clean them.
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µµ
Check the condition of the two drive
belts (power steering belt and
alternator belt). Examine the edges
of each belt f or cracks or f raying. If you see signs of wear or looseness,
have your dealer adjust or replace
the belts. Power steering belt: Thebeltshouldhavethefollowing
‘‘play’’ or def lection.
Check the tension of the power
steering belt by pushing on it with
your thumb midway between the
pulleys.
This f ilter should be replaced every
30,000 miles (48,000 km) under nor-
mal conditions. It should be replaced
every 15,000 miles (24,000 km) if you
drive primarily in urban areas that
have high concentrations of soot in
the air f rom industry and diesel-pow-
ered vehicles. Replace it more of ten
if air f low f rom the climate control
system becomes less than usual.
Have dust and pollen f ilter replaced
by your Acura dealer. The dust and pollen f ilter removes
pollen and dust that is brought in
f rom the outside through the heating
and cooling system/climate control
system.
Drive Belts
Dust and Pollen Filter
Maint enance
Dust and Pollen Filter, Drive Belts
285
A A L
LTT E
ER
RN NA AT
TO
OR R B
BEEL
LTT
P
P
O
OW WE ER
R S
STTE
EE
ER
RI INNG G B
BEEL
LTT
0.51 0.65 in (13.0 16.5 mm)
01/09/07 12:40:44 31S3V610_290

If you see steam and/or spray
coming f rom under the hood, turn
of f the engine.
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
(climbing a long, steep hill on a
hot day with the A/C running, for
example), the engine should start
to cool down almost immediately.
If it does, wait until the tempera-
ture gauge comes down to the mid-
point then continue driving. Saf ely pull to the side of the road.
Put the transmission in Neutral or
Park and set the parking brake.
Turn of f the heating and cooling/
climate control system and all
otheraccessories.Turnonthe
hazard warning indicators.
Keep the ends of the jumper cables
away from each other and any metal
on the vehicle until all are
disconnected. Otherwise, you may
cause an electrical short.
The pointer of your vehicle’s
temperature gauge should stay in
the midrange under most conditions.
Itmaygohigherif youaredrivingup
a long steep hill on a very hot day. If
it climbs to the red mark, you should
determine the reason. Your vehicle can overheat for several
reasons, such as lack of coolant or a
mechanical problem. 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.
In either case, you should take
immediate action.
1.
2. 3.
CONT INUED
T aking Care of t he Unexpect ed
Jump Starting, If Your Engine Overheats
If Your Engine Overheats
325
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.
01/09/07 12:47:08 31S3V610_330

If the temperature gauge stays at
the red mark, turn of f the engine.
Wait until you see no more signs
of steam or spray, then open the
hood.
If you don’t f ind an obvious leak,
check the coolant level in the
radiator reserve tank (see page). If the level is below the
MIN mark, add coolant to halfway
between the MIN and MAX marks.
If there was no coolant in the
reserve tank, you may also have 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 a large heavy
cloth, turn the radiator cap
counterclockwise, without pushing
down, to the f irst stop. This
releases any remaining pressure in
the cooling system. After the
pressure releases, push down on
the cap and turn it until it comes
off.
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 ). 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.
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. 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 .)
4.
5.
6.
7.
8. 9.10.
11.
12.
199 338
338
T aking Care of t he Unexpect ed
If Your Engine Overheats
Emergency
Towing
Emergency
Towing
326
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.
01/09/07 12:47:18 31S3V610_331

µ
No.
No. Amps. Circuits ProtectedCircuits Protected No. Amps. Circuits Protected
Amps.
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4 40 A
20 A
20 A
20 A ABS Motor
ABS F/S
Rear ACC Socket
4WD Spare Fuse
Spare Fuse
Right Headlight
ACG S
Hazard
Not used
Stop
Lef t Headlight
Radio
Power Window Motor
Rear A/C
Rear Defroster
Back Up, ACC 14
15
16
17
18
19
20
21
22
23
24
40 A
40 A
30 A
7.5 A 10 A
15 A
120 A 30 A
7.5 A 50 A
20 A Power Seat
Heater Motor
Cooling Fan
Spare Fuse
Spare Fuse
Spare Fuse
Battery
Condenser Fan
MG Clutch
IGI Main
Fog Lights
20 A
30 A
20 A
15 A
15 A
20 A
20 A
20 A
40 A
30 A
30 A
40 A
Fuses
T aking Care of t he Unexpect ed336
PRIMARY UNDER-HOOD FUSE BOX
SECONDARY UNDER-HOOD FUSE BOX
01/09/07 12:48:45 31S3V610_341

Î
Î
Î
Î
No.Circuits Protected
Circuits Protected
Amps.
No. Amps.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 Sun Roof
Driver’s Power Seat Reclining
Passenger’s Power Seat Sliding
Driver’s Power Seat Sliding
Passenger’s Power Seat
Reclining
Daytime Running Light
Driver’s side Rear Power
Window
Front Passenger’s Power
Window
Front Accessory Socket
Small Light
Interior Light, Radio
Power Door Lock
Back Up
Heated Seat
Driver’s Power Window
Passenger’s Side Rear Power
Window
Fuel Pump
SRS
Heater Control, A/C Clutch
Relay, Cooling Fan Relay
Power Mirror
Daytime Running Light /Rear
Wiper
ECU(PCM),CruiseControl
OPDS
ACC Relay
Back-up Lights, Instrument
Lights
Turn Signals
IG Coil
Front Wiper
Starter Signal
15 A
10 A
7.5 A
7.5 A 10 A
15 A
7.5 A
7.5 A 10 A
7.5 A 15 A
30 A
7.5 A
1
2
3
4
5
6
7
8
9
10
11
12
13
On Canadian models 30 A
20 A
20 A
20 A
20 A
10 A
20 A
20 A
15 A
15 A
10 A
20 A
7.5 A 20 A20 A
20 A
1 : Canadian models
Fuses
T aking Care of t he Unexpect ed337
Driver’s Side INTERIOR FUSE BOX Passenger’s Side
F Fr roo n
nt
t
F
Frroo n
nt
t
:
01/09/07 12:48:55 31S3V610_342

.................................................
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