2009 CADILLAC DTS fuses

Vehicle Symbol Chart
Here are some additional symbols that may be found on
the vehicle and what they mean. For more information
on the symbol, refer to the index.
9:Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel Controls or OnStar®
$:Brake System Warning Light
":Charging System
I:Cruise Control
B:Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.:Fuel Gage
+:Fuses
i:Headlamp High/Low-Beam Changer
j:LATCH System Child Restraints
*:Malfunction Indicator Lamp
::Oil Pressure
g:Outside Power Foldaway Mirrors
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
F:Traction Control
M:Windshield Washer Fluid
iv

Testing the Alarm
1. From inside the vehicle, roll down the window, then
get out of the vehicle, keeping the door open.
2. From outside of the vehicle, with the door open,
lock the vehicle using the power door lock or the
RKE system and close the door. Wait 30 seconds
until the security lamp goes off.
3. Reach in and unlock the door using the manual
lock and open the door. The horn will sound and
the hazard lights will ash.
You can turn off the alarm by unlocking the driver’s door
with your key, using the unlock button on the RKE
transmitter or by starting the car with a valid key.
If the alarm does not sound when it should, check to
see if the horn works. The horn fuse may be blown.
To replace the fuse, seeFuses and Circuit Breakers on
page 5-95. If the fuse does not need to be replaced,
you may need to have your vehicle serviced.
To reduce the possibility of theft, always arm the
theft-deterrent system when leaving your vehicle.
PASS-Key®III+ Electronic
Immobilizer
The PASS-Key III+ system operates on a radio
frequency subject to Federal Communications
Commission (FCC) Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
PASS-Key III+ uses a radio frequency transponder in
the key that matches a decoder in the vehicle.
2-22

PASS-Key®III+ Electronic
Immobilizer Operation
Your vehicle has PASS-Key®III+ (Personalized
Automotive Security System) theft-deterrent system.
PASS-Key
®III+ is a passive theft-deterrent system.
The system is automatically armed when the key
is removed from the ignition.
The system is automatically disarmed when the key is
turned to ON/RUN, ACC/ACCESSORY or START
from the LOCK/OFF position.
You do not have to manually arm or disarm the system.
The security light will come on if there is a problem
with arming or disarming the theft-deterrent system.
When the PASS-Key
®III+ system senses that someone
is using the wrong key, it prevents the vehicle from
starting. Anyone using a trial-and-error method to start
the vehicle will be discouraged because of the high
number of electrical key codes.If the engine does not start and the security light comes
on when trying to start the vehicle, there may be a
problem with your theft-deterrent system. Turn the
ignition off and try again.
If the engine still does not start, and the key appears to
be undamaged, try another ignition key. At this time,
you may also want to check the fuse, seeFuses
and Circuit Breakers on page 5-95. If the engine still
does not start with the other key, your vehicle needs
service. If your vehicle does start, the rst key may be
faulty. See your dealer/retailer who can service the
PASS-Key
®III+ to have a new key made. In an
emergency, contact Roadside Assistance.
It is possible for the PASS-Key
®III+ decoder to “learn”
the transponder value of a new or replacement key.
Up to 10 keys may be programmed for the vehicle.
The following procedure is for programming additional
keys only. If all the currently programmed keys are
lost or do not operate, you must see your dealer/retailer
or a locksmith who can service PASS-Key
®III+ to
have keys made and programmed to the system.
2-23

Accessory Power Outlet(s)
The accessory power outlets can be used to plug in
electrical equipment, such as a cellular telephone.
If the vehicle has a center console, the power outlet is
located inside the lower storage area. There are outlets
also on the right front lower part of the driver’s seat and
under the climate control system next to the ashtray.
SeeCenter Console Storage on page 2-62.
There are two accessory power outlets in the rear seat
area located on the door armrests next to the ashtrays.
There may be a small cap that must be removed to
access the accessory power outlet. When not using
the outlet be sure to cover it with the protective cap.
The accessory power outlet can be used at any time.
Notice:Leaving electrical equipment plugged in
for an extended period of time while the vehicle is
off will drain the battery. Power is always supplied
to the outlets. Always unplug electrical equipment
when not in use and do not plug in equipment
that exceeds the maximum 20 ampere rating.Certain accessory power plugs may not be compatible
to the accessory power outlet and could result in blown
vehicle or adapter fuses. If you experience a problem
see your dealer/retailer for additional information on the
accessory power outlets.
Notice:Adding any electrical equipment to the
vehicle can damage it or keep other components
from working as they should. The repairs would
not be covered by the vehicle warranty. Do not use
equipment exceeding maximum amperage rating
of 20 amperes. Check with your dealer/retailer before
adding electrical equipment.
Follow the proper installation instructions that are
included with any electrical equipment you install.
Notice:Improper use of the power outlet can cause
damage not covered by the warranty. Do not hang
any type of accessory or accessory bracket from
the plug because the power outlets are designed
for accessory power plugs only.
3-38

Tire Chains..................................................5-73
If a Tire Goes Flat........................................5-74
Changing a Flat Tire.....................................5-74
Removing the Spare Tire and Tools................5-76
Removing the Flat Tire and Installing the
Spare Tire................................................5-77
Storing a Flat or Spare Tire and Tools............5-83
Spare Tire...................................................5-85
Appearance Care............................................5-86
Interior Cleaning...........................................5-86
Fabric/Carpet...............................................5-87
Leather.......................................................5-88
Instrument Panel, Vinyl, and Other
Plastic Surfaces........................................5-88
Wood Panels...............................................5-89
Speaker Covers............................................5-89
Care of Safety Belts......................................5-89
Weatherstrips...............................................5-89
Washing Your Vehicle...................................5-90
Cleaning Exterior Lamps/Lenses.....................5-90
Finish Care..................................................5-90Windshield and Wiper Blades.........................5-91
Aluminum or Chrome-Plated Wheels and Trim. . . .5-92
Tires...........................................................5-93
Sheet Metal Damage.....................................5-93
Finish Damage.............................................5-93
Underbody Maintenance................................5-93
Chemical Paint Spotting.................................5-93
Vehicle Identication......................................5-94
Vehicle Identication Number (VIN).................5-94
Service Parts Identication Label.....................5-94
Electrical System............................................5-94
Add-On Electrical Equipment..........................5-94
Headlamp Wiring..........................................5-95
Windshield Wiper Fuses................................5-95
Power Windows and Other Power Options
.......5-95
Fuses and Circuit Breakers............................5-95
Underhood Fuse Block..................................5-95
Rear Underseat Fuse Block...........................5-98
Capacities and Specications........................5-103
Section 5 Service and Appearance Care
5-2

The vehicle has an airbag system. Before attempting to
add anything electrical to the vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-68.
Headlamp Wiring
The headlamp wiring system has four individual fuses. An
electrical overload will cause the lamps to go on and off,
or in some cases to remain off. If this happens, have the
headlamp wiring checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by an internal
circuit breaker. If the wiper motor overheats due to
heavy snow, the wipers will stop until the motor cools
and will then restart.
A fuse powers the wiper motor. If the fuse blows, there
is an electrical problem. Be sure to have it xed.
Power Windows and Other Power
Options
Circuit breakers in the fuse block protect the power
windows and other power accessories. When the
current load is too heavy, the circuit breaker opens and
closes, protecting the circuit until the problem is xed or
goes away.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. This greatly reduces the chance of res
caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical size
and rating.
If you ever have a problem on the road and don’t have
a spare fuse, you can borrow one that has the same
amperage. Just pick some feature of the vehicle that you
can get along without — like the radio or cigarette
lighter — and use its fuse, if it is the correct amperage.
Replace it as soon as you can.
Underhood Fuse Block
The underhood fuse block is located on the passenger
side of the engine compartment. Remove the fuse cover
and secondary service cover to access the fuse block.
Notice:Spilling liquid on any electrical components
on the vehicle may damage it. Always keep the
covers on any electrical component.
5-95

Fuses Usage
1Engine Control Module (ECM),
Crank
2 Fuel Injectors OddFuses Usage
3 Fuel Injectors Even
4 Air Conditioning Clutch
5 Air Injection Reactor (AIR) Solenoid
5-96

Fuses Usage
6 Oxygen Sensor
7 Emission Device
8 Transmission, Ignition 1
9Engine Control Module (ECM),
Powertrain Control Module (PCM)
10Climate Control System, Instrument
Panel Cluster Ignition 1
11 Airbag System
12 Horn
13 Windshield Wiper
14 Fog Lamps
15 Right High-Beam Headlamp
16 Left High-Beam Headlamp
17 Left Low-Beam Headlamp
18 Right Low-Beam Headlamp
19 Windshield Washer Pump Motor
20 Left Front Cornering Lamp
21 Right Front Cornering Lamp
22 Air Pump (J-Case)Fuses Usage
23Antilock Brake System (ABS)
(J-Case)
24 Starter (J-Case)
25Antilock Brake System (ABS) Motor
(J-Case)
26 Cooling Fan 2 (J-Case)
27 Cooling Fan 1 (J-Case)
28 Windshield Washer Heater (J-Case)
Relays Usage
29 Powertrain
30 Starter
31 Cooling Fan 2
32 Cooling Fan 3
33 Cooling Fan 1
34 Air Conditioning Clutch
35 Air Injection Reactor (AIR) Solenoid
36 Ignition
37 Air Pump
5-97