CADILLAC DTS PROFESSIONAL 2007 1.G Owners Manual

Electrical System
Add-On Electrical Equipment
Notice:Do not add anything electrical to your
vehicle unless you check with your dealer
rst. Some electrical equipment can damage
your vehicle and the damage would not
be covered by your warranty. Some add-on
electrical equipment can keep other
components from working as they should.
Add-on equipment can drain your vehicle’s battery,
even if your vehicle is not operating.
Your vehicle has an airbag system. Before
attempting to add anything electrical to your
vehicle, seeServicing Your Airbag-Equipped
Vehicle on page 86.
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.
451

Power Windows and Other Power
Options
Circuit breakers protect the power windows and
power seats. 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 your 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 a fuse should
blow, see your dealer for service immediately.If you ever have a problem on the road and do not
have a spare fuse, you can “borrow” one that has
the same amperage. Pick some feature of your
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.
The fuses are located in two fuse blocks,
one located in the engine compartment, and
the other under the rear seat. If a fuse should
blow, have your vehicle serviced by your dealer
immediately.
Underhood Fuse Block
The underhood fuse block is located on the
passenger’s side of the engine compartment.
Remove the fuse cover and secondary service
cover to access the fuse block.
452

Fuses Usage
F1 Spare
F2 Driver’s Side Low-Beam
F3 Passenger’s Side Low-Beam
F4 Airbag Ignition
F5 Engine Control ModuleFuses Usage
F6 Transaxle Ignition
F7 Spare
F8 Spare
F9 Spare
453

Fuses Usage
F10Passenger’s Side High-Beam
Headlamp
F11 Driver’s Side High-Beam Headlamp
F12 Windshield Washer Pump
F13 Spare
F14Climate Controls, Instrument Panel
Cluster
F15 Spare
F16 Fog Lamps
F17 Horn
F18 Windshield Wiper
F19 Driver’s Side Corner Lamp
F20 Passenger’s Side Corner Lamp
F21 Oxygen Sensor
F22 Powertrain
F23 Engine Control Module (ECM), Crank
F24 Injector Coil
F25 Injector Coil
F26 Air Conditioning
F27 Air Solenoid
F28Engine Control Module, Transaxle
Control Module (ECM/TCM)
F29 Spare
F30 SpareFuses Usage
F31 Spare
F32 Spare
J-Case Fuse Usage
JC1 Heated Windshield Washer
JC2 Cooling Fan 1
JC3 Spare
JC4 Crank
JC5 Cooling Fan 2
JC6 Anti-lock Brake System 2
JC7 Anti-lock Brake System 1
JC8 Air Pump
Relays Usage
R1 Cooling Fan 1
R2 Cooling Fan
R3 Crank
R4 Powertrain
R5 Spare
R6 Run/Crank
R7 Cooling Fan 2
R8 Windshield Wiper
R9 Air Pump
454

Relays Usage
R10 Windshield Wiper High
R11 Air Conditioning
R12 Air Solenoid
Rear Underseat Fuse Block
The rear fuse block is located under the rear seat
on the driver’s side. The rear seat cushion
must be removed to access the rear fuse block.
Removing the Rear Seat Cushion
Notice:If you touch the exposed wires with
the metal on the seat cushion, you could cause
a short that could damage the battery and or
wires. Avoid contact between the rear seat and
the fuse center whenever you remove or
reinstall the rear seat. Do not remove covers
from any of the covered parts, and do not store
anything under the seats.To remove the rear seat cushion, do the following:
1. Pull up on the front of the cushion to release
the front hooks.
2. Pull the cushion up and out toward the front
of the vehicle.
To access the fuse block, pull out and lift up on
the cover latch, located at the end of the fuse
block, near the battery cable.
455

To reinstall the rear seat cushion, do the following:
{CAUTION:
A safety belt that is not properly routed
through the seat cushion or is twisted will
not provide the protection needed in a
CAUTION: (Continued)
CAUTION: (Continued)
crash. If the safety belt has not been
routed through the seat cushion at all, it
will not be there to work for the next
passenger. The person sitting in that
position could be badly injured. After
reinstalling the seat cushion, always
check to be sure that the safety belts are
properly routed and are not twisted.
1. Buckle the center passenger position safety
belt, then route the safety belts through the
proper slots in the seat cushion. Do not let the
safety belts get twisted.
2. Slide the rear of the cushion up and under the
seatback so the rear-locating guides hook into
the wire loops on the back frame.
3. With the seat cushion lowered, push rearward
and then press down on the seat cushion until
the spring locks on both ends engage.
4. Check to make sure the safety belts are
properly routed and that no portion of any
safety belt is trapped under the seat.
Also make sure the seat cushion is secured.
456

J-CaseFuses Usage
JC1 Climate Control Fan
JC2 Rear Defogger (Option)
JC3Automatic Leveling
Control/Compressor
Fuses Usage
F1 Amplier
F2 Navigation - Japan (Option)
Fuses Usage
F3 Interior Lamps
F4Courtesy/Passenger Side Front
Turn Signal
F5 Canister Vent
F6Magnetic Ride Control
Module (Option)
F7 Leveling Compressor (Option)
F8 Rear Seat Lumbar (Option)
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Fuses Usage
F9 Door Unlatch - Limo (Option)
F10 Switch Dimmer
F11 Fuel Pump
F12 Body Control Module Logic
F13 Airbag
F14 Auxiliary Power Outlets
F15 Driver’s Side Turn Signal
F16 Passenger Side Rear Turn Signal
F17 Not Used
F18Center High-Mounted Stoplamp,
Back-up Lamps
F19 Rear Door Locks
F20 Stoplamp - Export (Option)
F21 Radio, S-Band
F22 OnStar
®(Option)
F23Auxiliary Power Outlet, Cigarette
Lighter, Console
F24 Driver Door Module
F25 Passenger Door Module
F26 Trunk Release (Option)
F27 Heated/Cooled Seats (Option)
F28Engine Control Module, Transaxle
Control Module (ECM/TCM)
Fuses Usage
F29 Regulated Voltage Control Sense
F30 Not Used
F31 Instrument Panel Harness Module
F32 Rear Heated Seats (Option)
F33 Not Used
F34 Steering Wheel Illumination
F35 Body Harness Module
F36Memory Seat Module Logic, Right
Front Massage (Option)
F37 Object Detection Sensor (Option)
F38 Sunroof
F40 Shifter Solenoid (Option)
F41Retained Accessory Power,
Miscellaneous
F42 Driver’s Side Park Lamp
F43 Passenger’s Side Park Lamp
F44 Heated Steering Wheel (Option)
F45 Rear Climate Control (Option)
F46 Not Used
F47 Heated/Cooled Seats, Ignition 3
F48 Ignition Switch
F49 Not Used
458

Circuit
BreakersUsage
CB1Front Passenger’s Seat, Memory
Seat Module
CB2Driver’s Power Seat, Memory
Seat Module
CB3 Door Module, Power Windows
CB4Memory Seat Module, Tilt/
Telescoping Steering
Wheel (Option)
Resistor Usage
F39 Terminating Resistor
Relays Usage
R1 Retained Accessory Power
R2 Park Lamps
R3 Run
Relays Usage
R4 Park Lamps - Export (Option)
R5Front Heating, Ventilation, Air
Conditioning Fan (Option)
R6 Trunk Release (Option)
R7 Fuel Pump
R8Door Unlatch, License Plate
Lamp (Option)
R9 Door Lock
R10 Door Unlock
R11 Overhead Lamps (Option)
R12 Stoplamps (Option)
R13 Not Used
R14 Rear Defogger (Option)
R15Electronic Leveling Control
Compressor
459

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended
Fluids and Lubricants on page 475for more information.
ApplicationCapacities
English Metric
Air Conditioning RefrigerantFor the air conditioning system refrigerant charge
amount, see the refrigerant caution label located
under the hood. See your dealer for more
information.
Cooling System 12.6 qt 12.0 L
Engine Oil with Filter 7.5 qt 7.1 L
Fuel Tank 18.5 gal 70.0 L
Transaxle 7.0 qt 6.6 L
Wheel Nut Torque 100 lb ft
140Y
All capacities are approximate. When adding, be sure to ll to the approximate level as recommended in this
manual. Recheck uid level after lling.
Engine Specications
Engine VIN Code Transaxle Spark Plug Gap
4.6L DOHC V8 Y Automatic 0.050 inches (1.27 mm)
4.6L DOHC V8 9 Automatic 0.050 inches (1.27 mm)
460