2004 CADILLAC CTS V fuse

A. Underhood Fuse Block. SeeFuses and Circuit
Breakers on page 5-100.
B. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-41.
C. Battery. SeeBattery on page 5-45.
D. Engine Oil Dipstick. SeeEngine Oil on page 5-18.
E. Engine Oil Fill Cap. SeeEngine Oil on page 5-18.
F. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-40.G. Brake Master Cylinder Reservoir. SeeBrakes on
page 5-42.
H. Hydraulic Clutch Reservoir. SeeHydraulic Clutch
(Manual Transmission) on page 5-28.
I. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on page 5-31
andCooling System on page 5-34.
J. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-24.
5-17

For example, if someone puts in brake linings that are
wrong for your vehicle, the balance between your
front and rear brakes can change — for the worse.
The braking performance you have come to expect can
change in many other ways if someone puts in the
wrong replacement brake parts.
Battery
Your vehicle has a maintenance free battery.
When it is time for a new battery, get one that has the
replacement number shown on the original battery’s
label. We recommend an ACDelco
®replacement
battery. SeeEngine Compartment Overview on
page 5-12for battery location.
Warning:Battery posts, terminals and related
accessories contain lead and lead compounds,
chemicals known to the State of California to
cause cancer and reproductive harm. Wash hands
after handling.
{CAUTION:
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you
are not careful. SeeJump Starting on page 5-46
for tips on working around a battery without
getting hurt.
After a power loss, such as disconnecting the battery or
removing the maxi fuses in the power distribution
fuse block, the following steps must be performed to
calibrate the electronic throttle control. If this is not done,
the engine will not run properly.
1. Turn the ignition key to ON. Do not start the engine.
2. Leave the ignition in ON for at least three minutes
so that the electronic throttle control will cycle and
re-learn its home position.
3. Turn the ignition to OFF.
4. Start and run the engine for at least 30 seconds.
Also, for your audio system, seeTheft-Deterrent Feature
on page 3-124.
5-45

Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your
vehicle unless you check with your dealer rst.
Some electrical equipment can damage your vehicle
and the damage wouldn’t be covered by your
warranty. Some add-on electrical equipment can
keep other components from working as they should.
Your vehicle has an air bag system. Before attempting to
add anything electrical to your vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-58.
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.
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 blows, see your dealer
for service immediately.
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. 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 three fuse blocks, one located
in the engine compartment on the passenger’s side
and the other two under the rear seat.
5-100

Underhood Fuse Block
The underhood fuse block is located in the engine
compartment on the passenger’s side of the vehicle.
SeeEngine Compartment Overview on page 5-12
for more information on location.
To access the fuses, push in the two tabs located on
each side of the fuse block cover. Then lift the cover off.
Relays Usage
LO SPEED FAN
RELAY MINILow Speed Fan Motor
HI SPEED FAN
RELAY MINIHigh Speed Fan Motor
ACCESSORY
RELAY MINIAccessory Power Outlets
S/P FAN
RELAY MINISeries/Parallel Fan
PARK LAMP
RELAY MICROParking Lamps
5-101

Fuses Usage
RT PARKPassenger’s Side Taillamp
Assembly, Front Sidemarker and
Front Parking Lamp Assembly
HORN Dual Horn Assembly
LT HI BEAM Driver’s Side High-Beam Headlamp
LT LOW BEAM Driver’s Side Low-Beam Headlamp
RT LOW BEAMPassenger’s Side Low-Beam
Headlamp
RT HI BEAMPassenger’s Side High-Beam
Headlamp
SPARE Not Used
SPARE Not Used
THEFTECM (Electronic Control Module),
TCM (Transmission Control Module),
PASS-Key
®III+ Module
LT PARKDriver’s Side Taillamp Assembly,
Front Sidemarker and Front Parking
Lamp Assembly
DIMMINGRear License Plate Assembly,
Dash Integrated Module (DIM)
DIM/ALDLDIM, ALDL (Assembly Line
Data Link)
Fuses Usage
FLASHER Turn Signal/Hazard Flasher Module
ECM Electronic Control Module
STRG CTLSSteering Wheel Control Pad,
Headlamp Switch
HTR VLV/
CLTCHHeater Valve, Clutch Switch
(Normal Closed), Clutch Switch
(Normal Open), Jumper to Start
Relay Coil for Automatic
Transmission
WASH NOZDriver’s and Passenger’s Side
Heated Washer Nozzles
PRE O2/CAMDriver’s & Passenger’s Side Oxygen
Sensors, Transmission Output
Speed Sensor, CAM Phaser
TCM/IPCTCM, ECM and IPC
(Instrument Panel Cluster)
SPARE Not Used
IGN MOD/MAF Front Bank Ignition Modules
ELEC PRNDL Electronic PRNDL
SPARE Not Used
SPARE Not Used
5-103

Fuses Usage
IGN SWIgnition Switch (Power to IGN-3
and CRANK)
VOLT CHECK DIM (Dash Integration Module)
ECM/TCMTCM (Transmission Control Module),
ECM (Electronic Control Module),
IPC (Instrument Panel Cluster),
PASS-Key
®III+ Module
WPR MOD Windshield Wiper Module Assembly
ODD INJ/
COILSOdd Ignition Coils, Fuel Injectors,
Odd Injection Coils
COMP CLUTCH Compressor Clutch
WPR SW Windshield Wiper/Washer Switch
FOG LAMP Fog Lamps
OUTLETCenter Console Accessory
Power Outlet
POST 02Driver’s and Passenger’s Side
Oxygen Sensors, LRPDB
(Pusher Cooling Fan Relay)
Fuses Usage
I/P OUTLETInstrument Panel Accessory
Power Outlet
CCP Climate Control
EVEN INJ/
COILSEven Injection Coils
SPARE Not Used
SPARE Not Used
SPARE Not Used
Circuit
BreakersUsage
HDLP WASH
C/B-OPTHeadlamp Washer Motor
5-104

Removing the Rear Seat Cushion
Notice:If, when removing or reinstalling the
rear seat, you do not do it carefully, you could
damage the fuse center. Avoid contact between
the rear seat and the fuse center whenever
you remove or reinstall the rear seat.
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.
3. Slide the cushion out one of the rear doors and
set it aside.
Rear Pass-Through Seat
5-105

Rear Underseat Fuse Block
(Driver’s Side)
The driver’s side rear fuse block is located under the
rear seat on the driver’s side of the vehicle. The rear
seat cushion must be removed to access the rear
fuse block. See “Removing the Rear Seat Cushion”
listed previously.
To access the fuse block, push in the two tabs located
at each end of the fuse block cover. Then lift the
cover off.
Relays Usage
BAS RELAY
MINIBrake Apply Sensor
SPARE Not Used
SPARE Not Used
PUSHER FAN Pusher Fan (Export Only)
L POSITION
RELAY MICRODriver’s Side Position Lamp
R POSITION
RELAY MICROPassenger’s Side Position Lamp
IGN 3 RELAY
MICROHeated Seat Modules, Air Inlet
Motor, Shifter Assembly
STANDING
LAMP
RLY MICROControl for Position Lamp Relays
TRK DR REL
SOL RELAY
MICROTrunk Release Motor
REV LAMP
RELAY MICROISRVM (Inside Rearview Mirror),
License Plate Lamp Assembly
5-107