1994 CADILLAC DEVILLE heater

Downloaded from www.Manualslib.com manuals search engine ENGINE COOLANT HEATER (ENGINE
BLOCK HEATER) (OPTION)
(CANADA ONLY)
In very cold weather, O°F (-1S”C) or colder, the engine coolant heater
can help. You’ll get easier starting and better fuel economy during engine
warm-up. Usually, the coolant heater should be plugged
in a minimum of
four hours prior to starting your vehicle.
To use the coolant heater:
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
3. Plug it into a normal, grounded 110-volt outlet.
A CAUTION:
Plugging the cord into an ungrounded outlet could cause an
electrical
shock. Also, the wrong kind of extension cord could
overheat and cause
a fie. You could be seriously injured. Plug
the cord into
a properly grounded three-prong 110-volt outlet. If
the cord won’t reach, use a heavy-duty three-prong extension
cord rated for at least 15 amps.
NOTICE:
After you’ve used the coolant heater, be sure to store the cord as
it was before to keep it away from moving engine parts.
If you
don’t, it could be damaged.
How long should
you keep the coolant heater plugged in? The answer
depends on the weather, the kind
of oil you have, and some other things.
Instead
of trying to list everything here, we ask that you contact a Cadillac
dealer in the area where you’ll be parking your vehicle. The dealer can
give you the best advice for that particular area.

Downloaded from www.Manualslib.com manuals search engine AUTO
With this setting, the air conditioning compressor cycles when needed to
cool the air and it’s all automatic. In cold weather when the system senses
- the need for heat, the air flow will be directed out the floor ducts. As the
interior temperature approaches the desired setting, the blower speed
will decrease and the air flow could be directed through the defroster and
floor ducts.
To maintain interior comfort, the air flow may move to the air
outlets and floor ducts (Bi-level). On bright sunny days
in cold weather,
the air
flow could even come out the A/C outlets to maintain comfort and
prevent stuffiness.
Electronic Climate Control Features
-
~.
~
A/C Purge
- .. If your vehicle is sitting out on a hot day and you have it set on AUTO,
the air will first flow out the floor air ducts for a few seconds. That is
normal. This is to expel hot air in the air ducts.
As the air is cooled, the
__ flow will move through the A/C outlets. If you start your vehicle with the
fan setting on “HI” it will skip the
A/C Purge.
Cold Weather Purge
-- On cold days when your system is first turned on, in either the AUTO or
ECON setting and the fan setting is not on “HI”, a small amount of air
will flow through the defroster duct while the system is waiting for the
breath from fogging your windshield.
As the coolant warms up? the
blower speed will gradually increase and air will
flow from the heater
normal conditions.
-. . engine coolant to warm up enough to provide heat. This prevents your
-~ outlets, with some bleed to the windshield to prevent fogging under most
Manually Recirculate Inside Air
I.
There may be times, when you don’t want air from the outside. To
recirculate the air from the inside only, in either “AUTO” or “ECON”
setting, just set the temperature to 60 F (16 C) and adjust your fan - speed, if the air quantity is too high.
DEFOG
c_ Push this button to divide the air between the windshield and the heater
ducts. This is Lseful when fog appears on the windshield or side glass due
to a sudden rainy or snowy condition.
153

Downloaded from www.Manualslib.com manuals search engine Run your engine only as long as you must. This saves fuel. When you run
the engine, make it go a little faster than just idle. That is, push the
accelerator slightly. This uses less fuel for the heat that
you get and it
keeps the battery charged. You will need a well-charged battery to restart
the vehicle, and possibly for signaling later on with your headlights. Let
the heater run for awhile.
Then, shut the engine
off and close the window almost all the way to
preserve the heat. Start the engine again and repeat this
only when you
feel really uncomfortable from the cold. But do it as little as possible.
Preserve the fuel as long as you can.
To help keep warm, you can get out
206

Downloaded from www.Manualslib.com manuals search engine #‘No Steam Is Coming From Your Engine
If you get the overheat warning but see or hear no steam, the problem
may not be too serious. Sometimes the engine can get a little too hot
when you:
Climb a long hill on a hot day.
Stop after high speed driving.
Idle for long periods in traffic.
Tow a trailer.
If you get the overheat warning with no sign of steam, try this for a
minute or
so:
1. Turn off your air conditioner.
2. Turn on your heater to full hot at the highest fan speed and open the
3. Dial temperature control to the highest heat setting and open the
window as necessary.
window, as necessary.
4. Try to keep your engine under load (in a drive gear where the engine
If you no longer have the overheat warning, you can drive. Just to be safe,
drive slower for about ten minutes. If the warning doesn’t come back on,
you can drive normally.
runs
slower).
If the warning continues, pull over, stop, and park your vehicle right
away.
If there’s still no sign
of steam, you can idle the engine for two or three
minutes while you’re parked, to see
if the warning stops. But then, if you
still have the warning, TURN OFF THE ENGINE AND GET
EVERYONE OUT OF THE VEHICLE until it cools down.
You may decide not to lift the hood, but get service help right away.
227

Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Coolant Recovery Tank
If you haven’t found a problem yet, but the coolant level isn’t at or near
“FULL COLD” on the coolant recovery tank, add a 50/50 mixture of
clean water (preferably distilled) and a proper antifreeze at the coolant
recovery tank. (See “Engine Coolant” in the Index for more ififormation
about the proper coolant mix)
C-
NOTICE:
In cold weather, water can freeze and crack the engine, radiator,
heater core and other parts. Use the recommended coolant.
230

Downloaded from www.Manualslib.com manuals search engine Engine Oil Additives
Don’t add anything to your oil. Your Cadillac dealer is ready to advise if
you think something should be added.
Men to Change Engine Oil
Your Cadillac has an “Oil Life Indicator.” This feature will let you know
when to change your oil
-- usually between 3,000 miles (5 000 km) and
7,500 miles (12 500 km) since your last oil change. Under severe
conditions, the indicator may come on before
3,000 miles (5 000 km).
Never drive your vehicle more than
7,500 miles (12 500 km) or 12 months
without an oil change.
% 1
-
-4
7
The system won’t detect dust in the oil. So, if you drive in a dusty area, be
sure to change your oil every 3,000 miles (5 000 km) or sooner if the
“CHANGE ENGINE OK’ message is displayed. Remember to reset the
‘ ’
Oil Life Indicator when the oil has been changed. For more information,
see
“Oil Life Indicator” in the Index.
7
How to Reset the Oil Life Indicator
After the oil has been changed, display the “OIL LIFE LEFT” message
by pressing the INFORMATION button. Then press and hold the
RESET button until the display shows “100”. This resets the oil life index.
The message
will remain off until the next oil change is needed. The
percentage
of oil life remaining may be checked at any time by pressing
the INFORMATION button several times until the “OIL LIFE LEFT”
message appears. For more information on the Oil Life Index feature, see
-
“Oil Life Index” in the Index.
Engine Coolant Heater (Engine Block Heater)
An engine coolant heater can be a big help if you have to park outside in
very cold weather,
0°F (-18°C) or colder. If your vehicle has this option,
see “Engine Coolant Heater” in the Index.
264

Downloaded from www.Manualslib.com manuals search engine .A CAUTION:
. Adding only plain water to your cooling system can be
’ . dangerous. Plain water, or some-other liquid like alcohol, can
boil before the proper coolant .mix ,will. Your vehicle’s coolant
warning
system is set-for the proper coolant mix. With plain
water or the
wrong mix, your engine could get too hot but you
.wouldn’t get the overheat warning. Your engine could catch fire
and you
OF others could be burned. Use a 50/50 mix of clean
water and
a proper antifreeze.
NOTICE:
If you use an improper coolant mix, your engine could overheat
and be badly damaged. Therepair cost wouldn’t be covered
by
your warranty. Too much water in the mix can freeze and crack
the engine, radiator, heater .coreand other parts.
Adding Coolant
The Coolant Recovery Tank is located on the right side of your vehicle.
To Check Coolant
When your -engine is cold, the coolant level should be at the FULL
COLD mark or a little higher. When your engine is warm, the level
should be up to
FULL HOT mark or a little higher.
To Add Coolant
If you need more coolant, add the proper mix at the coolant recoverv
tank.
271

Downloaded from www.Manualslib.com manuals search engine r I
r i
r‘ I
!- I
r
? ! i
!- i
I
r‘ L
DlSTR SIR PCM (IGN) INJ INJ IGN 1
]mmmmmmri
~mnmmmml
PCM (BAT) RTD BATT A/C COMP HDLPS STOP LP TURN/HAZ
DRL
L HDLP LO
R HDLP LO L HDLP HI R HDLP HI IGN 3 COOL FAN TRANS
I FUSE CENTER IDENTIFICATION
ENGINE COMPARTMENT FUSE BLOCK
DISTR 20A TURN/HAZ 20A
SIR 20A - IGNITION CONTROL MODULE - HAZARD FLASHER
- DIAGNOSTIC/ENERGY RESERVE
- DUAL POLE ARMING SENSOR - DAYTIME RUNNING LIGHTS (CANADA)
- TURN FLASHER RELAY - TURN FLASHER MODULE
MODULE (DERM) DRL 10A (CANADA)
PCM IGN) 10A DRL 10A (CANADA)
- PASS-Key@ DECODER MODULE HTD W/S 1OA
INJ 1OA - HEATED WINDSHIELD CONTROL MODULE
INJ 1OA - LEFT REAR STRUT
IGN 1 10A
- P6WERTRAIN CONTROL MODULE (PCM) - LEFT AND RIGHT LO BEAM HEADLAMP
- 1,4,6, AND 7 FUEL INJECTORS LR STRUT 1OA
- 2,3,5, AND 8 FUEL INJECTORS RR STRUT 10A
- A/C REFRIGERANT PRESSURE SWITCH - TRANSAXLE RANGE SWITCH - STOP/BTSI/CRUISE BRAKE SWITCH - INSTRUMENT PANEL CLUSTER - KEYLESS ENTRY MODULE - DIAGNOSTIC/ENERGY RESERVE MODULE
- RIGHT REAR STRUT LF STRUT 1OA
RF STRUT 1OA
L HDLP LO 1OA
R HDLP LO 10A
L HDLP HI 1OA
R HDLP HI 1OA
IGN 3 10A
- LEFT FRONT STRUT
- RIGHT FRONT STRUT
- LEFT LO BEAM HEADLAMP
- RIGHT LO BEAM HEADLAMP
- LEFT HI BEAM HEADLAMP
- RIGHT HI BEAM HEADLAMP
- REAR DEFOGGER RELAY - ELECTRONIC LEVEL CONTROL (ELC) - HEATED WINDSHIELD - HEATER AND A/C PROGRAMMER - CRUISE CONTROL
LFR2RING
LIGHTS
-
- TURN/HAZARD SWITCH ASSY - CHIME MODULE - HEADLIGHT SWITCH - TWILIGHT SENTINEUDRL MODULE
- FUELPUMP - OIL PRESSURE SWITCH - POWERTRAIN CONTROL MODULE (PCM)
FUEL PUMP 20A
PCM BAT) 10A
RTD (BAT) 20A
A/C COMP 1OA
- POWERTRAIN CONTROL MODULE (PCM)
HDLPS 30A
- P6WERTRAIN CONTROL MODULE pCM) COOLING FAN 1OA - ROAD SENSING SUSPENSION (RSS) MODULE - EXTENDED TRAVEL BRAKE SWITCH
- A/C COMPRESSOR CLUTCH - COOLING FAN RELAYS 1,2, AND 3.
- HEADLIGHT DIMMER SWITCH - HEADLIGHT RELAY “D” (ENGINE COMP MICRO - OVERSPEED ALERT MODULE (EXPORT)
- DRL HEADLIGHT RELAY “E (WITH DAYTIME - POWER STEERING PRESSURE SWITCH - EXHAUST GAS RECIRCULATION (EGR) VALVE
- POWERS C13 - TRANSAXLE SHIFT SOLENOIDS A & B - EVAPORATIVE EMISSION CONTROL SOLENOID
- STOP/BTSI/CRUISE SWITCH - POWERTRAIN CONTROL MODULE (PCM)
- STOPLIGHT SWITCH CAPACITOR - TORQUE CONVERTER CLUTCH SOLENOID - TCC BRAKE SWITCH
- FRONT AND REAR HEATED OXYGEN SENSOR TRANS/ECS 1 OA
RELAY CENTER)
RUNNING LIGHTS)
STOP LP 20A
315