fuse CADILLAC CTS V 2006 1.G User Guide

A. Underhood Fuse Block. SeeUnderhood Fuse
Block on page 5-105.
B. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-37.
C. Battery. SeeBattery on page 5-41.
D. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 5-16.
E. Passenger Compartment Air Filter. SeePassenger
Compartment Air Filter on page 3-29.
F. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-16.G. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-36.
H. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-38.
I. Hydraulic Clutch Reservoir. See “When to Check
and What to Use” underHydraulic Clutch on
page 5-25.
J. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on
page 5-28andCooling System on page 5-31.
K. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-21.
5-15

Replacing Brake System Parts
The braking system on a vehicle is complex. Its many
parts have to be of top quality and work well together if
the vehicle is to have really good braking. Your vehicle
was designed and tested with top-quality GM brake parts.
When you replace parts of your braking system — for
example, when your brake linings wear down and you
need new ones put in — be sure you get new approved
GM replacement parts. If you do not, your brakes may no
longer work properly. 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 5-42for 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.
5-41

Your vehicle has a remote negative (−) ground
location, as shown in the illustration. It is located
between the battery and the underhood fuse block.
You should always use this remote ground
location, instead of the terminal on the battery.Notice:If you connect a negative cable to the ECM,
ECM mounting bracket, or any cables that attach
to the ECM bracket, you may damage the ECM.
Always attach the negative cable to your vehicle’s
remote negative ground location, instead of the
ECM, ECM bracket, or any cables attached to the
ECM bracket.
{CAUTION:
An electric fan can start up even when the
engine is not running and can injure you.
Keep hands, clothing and tools away from
any underhood electric fan.
5-44

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 1-67.
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.
5-104

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 MINIWipe-Wash, PRNDL,
Accessory Power Outlets
S/P FAN
RELAY MINISeries/Parallel Fan
PARK LAMP
RELAY MICROParking Lamps
HORN RELAY
MICROHorn
5-105

Fuses Usage
RT PARKPassenger’s Side Taillamp
Assembly, Front Sidemarker and
Front Parking Lamp Assembly
HORN Dual Horn Assembly
LT HI BEAMDriver’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
TOSManual Transmission Output
Speed Sensor
SPARE Not Used
THEFTECM (Engine 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)
Fuses Usage
DIM/ALDLDIM, ALDL (Assembly Line
Data Link)
FLASHERTurn Signal/Hazard Flasher
Module
ECM Electronic Control Module
STRG CTLSSteering Wheel Control Pad,
Headlamp Switch
HTR VLV/CLTCHClutch 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, CAM Phaser,
Canister Purge
TCM/IPCTransmission Control Module,
Engine Control Module,
Instrument Panel Cluster
SPARE Not Used
IGN MOD/MAFFront Bank Ignition Modules,
Mass Airow Sensor
5-107

Fuses Usage
ELEC PRNDL Electronic PRNDL (Export)
SPARE Not Used
SPARE Not Used
IGN SWIgnition Switch (Power to IGN-3
and CRANK)
VOLT CHECK DIM (Dash Integration Module)
ECM/TCMTCM (Transmission Control
Module), ECM (Engine Control
Module), IPC (Instrument Panel
Cluster), PASS-Key
®III+ Module
WPR MODWindshield 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
Fuses Usage
POST 02Driver’s and Passenger’s Side
Oxygen Sensors, LRPDB
(Pusher Cooling Fan Relay)
I/P OUTLETInstrument Panel Accessory
Power Outlet
CCP Climate Control
EVEN INJ/COILS Even Injection Coils
SPARE Not Used
SPARE Not Used
SPARE Not Used
Circuit
BreakersUsage
HDLP WASH
C/B-OPTHeadlamp Washer Motor
5-108

Rear Underseat Fuse Block
To access the rear underseat fuse blocks, you will have
to rst remove the rear seat cushion.
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
5-109

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.
Fuses Usage
SPARE Not Used
SPARE Not Used
AUDIO Radio, OnStar Module
SPARE Not Used
REAR DR MOD Rear Door Modules
Fuses Usage
SPARE Not Used
DRIVER
DR MODDriver’s Door Module
BASTaillamps, Center High-Mounted
Stoplamp, Flasher Module,
ABS Module, Trailer Lamps
HDLP
LEVELINGHeadlamp Leveling System
Chassis Sensors (Export Only)
SPARE Not Used
CCP CCP (Climate Control Panel)
IGN 3Heated Seat Modules, Air Inlet
Motor, Shifter Assembly
SPARE Not Used
SPARE Not Used
FUSE PULLER Fuse Puller
L FRT HTD
SEAT MODDriver’s Heated Seat Module
MEM/ADAPT
SEATDriver’s Power Seat Switch
Memory Seat Module
TRUNK
DR RELEASETrunk Release Motor
5-111

Fuses Usage
REVERSE
LAMPISRVM (Inside Rearview Mirror),
License Plate Lamp Assembly
SPARE Not Used
POSITION
LAMPTaillamp Assemblies,
Front Position Lamp Assemblies
J Cases Usage
AMP Audio Amplier
PUSHER FAN Pusher Fan (Export Only)
Relays Usage
BAS RELAY
MINIBrake Apply Sensor
PUSHER FAN Pusher Fan (Export Only)
L POSITION
RELAY MICRODriver’s Side Position Lamp
TRKDRREL
SOL RELAY
MICROTrunk Release Motor
Relays Usage
REV LAMP
RELAY MICROISRVM (Inside Rearview Mirror),
License Plate Lamp Assembly
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
Circuit
Breakers Usage
SEAT C/BPower Seat Switches,
Memory Seat Module
Misc. Usage
JOINT
CONNECTORJoint Connector
5-112