fuse CADILLAC CTS V 2007 1.G User Guide

A. Underhood Fuse Block. SeeUnderhood Fuse
Block on page 447.
B. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 369.
C. Battery. SeeBattery on page 375.
D. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 346.
E. Passenger Compartment Air Filter. See
Passenger Compartment Air Filter on page 195.
F. Engine Oil Fill Cap. See “When to Add
Engine Oil” underEngine Oil on page 346.G. Power Steering Fluid Reservoir. SeePower
Steering Fluid on page 368.
H. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 371.
I. Hydraulic Clutch Reservoir. See “When to
Check and What to Use” underHydraulic
Clutch on page 356.
J. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on
page 360andCooling System on page 363.
K. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 351.
345

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 342for 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 376for 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.
375

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 engine control module, 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.
378

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 88.
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.
446

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.
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 342for 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.
447

Wiring
HarnessesUsage
BODY W/H Wiring Harness Connection
BODY W/H Wiring Harness Connection
ENG W/H Engine Wiring Harness Connection
J Cases Usage
R REARRRPDB (Passenger’s Side Rear
Power Distribution Box)
R REARRRPDB (Passenger’s Side Rear
Power Distribution Box)
L REARLRPDB (Driver’s Side Rear Power
Distribution Box)
L REARLRPDB (Driver’s Side Rear Power
Distribution Box)
HI FAN High Cooling Fan Motor
LO FAN Low Cooling Fan Motor
BLOWER PWM Fan Motor Assembly
STARTER Starter Solenoid
ABS Anti-Lock Brake System
Fuses Usage
RT PARKPassenger’s Side Taillamp
Assembly, Front Sidemarker and
Front Parking Lamp Assembly
HORN Dual Horn Assembly
Fuses Usage
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
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)
DIM/ALDLDIM, ALDL (Assembly Line
Data Link)
FLASHER Turn Signal/Hazard Flasher Module
ECM Electronic Control Module
STRG CTLSTurn Signal Switch, Cruise Control
Switch
HTR VLV/
CLTCHClutch Switch (Normal Closed),
Clutch Switch (Normal Open),
Jumper to Start Relay Coil for
Automatic Transmission
449

Fuses Usage
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/MAF Mass Airow Sensor
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 MOD Windshield Wiper Module Assembly
ODD INJ/COILOdd Ignition Coils, Fuel Injectors,
Odd Injection Coils
COMP CLUTCH Compressor Clutch
Fuses Usage
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)
I/P OUTLETInstrument Panel Accessory Power
Outlet
CCP Climate Control
EVEN INJ/COIL Even Injection Coils
SPARE Not Used
SPARE Not Used
SPARE Not Used
SPARE Not Used
Circuit
BreakersUsage
HDLP WASH
C/B-OPTHeadlamp Washer Motor
Misc. Usage
FUSE PULLER Fuse Puller
450

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
451

3. With the seat cushion lowered, push rearward
and then press down on the seat cushion until
the seat cushion snaps into place.
4. Push and pull on the seat cushion to make
sure it is locked into place.
5. Check to make sure the safety belts are
properly routed and that no portion of any
safety belt is trapped under the seat cushion.
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
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)
453

Fuses Usage
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
REVERSE
LAMPISRVM (Inside Rearview Mirror),
License Plate Lamp Assembly
SPARE Not Used
POSITION
LAMPTaillamp Assemblies, Front Position
Lamp Assemblies (Export Only)
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
(Export Only)
TRK DR REL
SOL RELAY
MICROTrunk Release Motor
REV LAMP
RELAY MICROISRVM (Inside Rearview Mirror),
License Plate Lamp Assembly
R POSITION
RELAY MICROPassenger’s Side Position Lamp
(Export Only)
IGN 3 RELAY
MICROHeated Seat Modules, Air Inlet
Motor, Shifter Assembly
STANDING
LAMP
RLY MICROControl for Position Lamp Relays
(Export Only)
Circuit
BreakersUsage
SEAT C/BPower Seat Switches, Memory Seat
Module
Misc. Usage
JOINT
CONNECTORJoint Connector
454