2005 CADILLAC STS relay

The underhood fuse block is located in the front of the
engine compartment on the passenger’s side of the
vehicle. SeeEngine Compartment Overview on
page 5-12for more information on location, and removal
procedure for the front compartment underhood sights
shields.
To access the fuses, push in the tabs located on each
side of the fuse block cover. Then, lift the cover off.
Fuses Usage
BLOWER Blower Motor
R REAR Passenger’s Side Rear Fuse Block
I/P OUTLET Front Auxiliary Outlet
CCP Climate Control, Headlamp Leveling
PRE 02/CAM Oxygen Sensor, CAM Phasers
ENG W/H Engine W/H
R REAR Passenger’s Side Rear Fuse Block
WPR SW Wiper/Washer Switch
BODY W/H Body W/H
FOG LAMP Fog Lamps
OUTLET Rear Auxiliary Outlet
EVEN COILSEven Ignition Coils, Even Fuel
Injectors
L REAR Left Rear Fuse Block
WPR MOD Wiper Module
POST 02 Oxygen Sensor
Fuses Usage
COMP CLTCH Air Conditioner Compressor Clutch
STARTER Starter Solenoid
ABS Anti-Lock Brake Pump
L REAR Driver’s Side Rear Fuse Block
BODY W/H Body W/H
RAIN SSRRain Sensor, Headlamp Washer,
Tire Pressure Monitor
CCP Climate Control
SMT BM-OPT Smart Beam Relay (Option)
EXT LIGHTSLow Beam Relay, High Beam Relay,
Park Lamp Relay
VOLT CHECK Instrument Panel Module
ECM/TCMEngine Control Module,
Transmission Control Module,
Easy Key Module, Instrument
Panel Cluster
SPARE Spare
SPARE Spare
LT PARK Left Park Lamp, Left Taillamp
LIC DIMMINGLicense Plate, Instrument Panel
Dimming
IPM ALDLInstrument Panel Module Assembly
Line Data Link Connector
HUDHeads-Up Display, Column Lock
Module
5-97

Fuses Usage
V8 ECM V8 ECM, Evap Solenoid
ABS Anti-Lock Brake Controller
STR RLY Starter Relay
WASH
NOZ/AQSHeated Washer Nozzles, Air Quality
Sensor™
ODD COILSOdd Ignition Coils, Odd Fuel
Injectors
TCM IPCTransmission, Instrument Panel,
Engine Control
SPARE Spare
MAF Mass Air Flow Sensor
HIGH FAN Cooling Fan - High Speed
LOW FAN Cooling Fan - Low Speed
RT PARK Right Park Lamp, Right Taillamp
HORN Horn
LT HI BEAM Left Headlamp High Beam
LT LOW BEAM Left Headlamp Low Beam
RT LOW BEAM Right Headlamp Low Beam
RT HI BEAM Right Headlamp High Beam
HFV6 ECMHigh Feature V6 Engine Control
ModuleRelays Usage
HDLP WASH
RELAY
JUMPER -OPTHeadlamp Washer
STARTER
RELAY MINIStarter
SPARE Spare
FOG LAMP
RELAY MICROFog Lamps
CMP CLU
RELAY MICROA/C Compressor Clutch
BLOWER
RELAY MINIFront Blower Motor
POWERTRAIN
RELAY MICROEngine Controls
RUN/CRANK
RELAY MICROIgnition 1
LOW SPEED
FAN RELAY
MINICooling Fan Low Speed
ACCESSORY
RELAY MINIIgnition 3
PARK LAMP
RELAY MICROParking Lamps
5-98

Relays Usage
HIGH BEAM
RELAY MICROHigh Beams
LOW BEAM
RELAY/HID
MINI-OPTLow Beam/HID
HIGH SPEED
FAN RELAY
MINICooling Fan High Speed
S/P FAN
RELAY MINICooling Fan Series/Parallel
HORN RELAY
MICROHorn
SPARE Spare
Circuit
Breakers Usage
HDLP WASH
C/B -OPTHeadlamp Washer (Option)
Rear Underseat 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.
5-99

Fuses Usage
DPM Memory Seat, Lumbar
TRUNK DR
VALETTrunk Release, Valet
REVERSE
LAMPReverse Lamps, Rear Parking Aid,
Inside Rearview Mirror
AIR BAG Airbag
POSITION
LAMPS (OPT)Rear Taillamps
JOINT
CONNECTORJoint Connector
Relays Usage
ELC RELAY
(OPT)ELC Compressor (Option)
L POSITION
RELAY MICROLeft Rear Taillamp, Position Lamps
(Option)
Relays Usage
TRUNK DR
REL RELAY
MICROTrunk Release Motor
REV LAMP
RELAY MICROReverse Lamps, Rear Parking Aid
R POSITION
RELAY MICRORight Rear Taillamp, Position Lamps
(Option)
RUN RELAY
MICROIgnition 3
STNDBY LAMP
RLY (OPT)Rear Taillamps, Position Lamps
(Option)
Circuit
Breakers Usage
SEATS C/B Power Seat
5-103

Fuses Usage
REAR FOG
LAMP (OPT)Rear Fog Lamps (Option)
AFTERBOIL
(OPT)After Boil Pump
RIM Ignition to RIM
JOINT
CONNECTORJoint Connector
Relays Usage
SPARE Spare
REAR DEFOG
RELAY MINIRear Defog
FUEL PUMP
RELAY MICROFuel Pump
Relays Usage
REAR FOG
LAMP RLY
MICRO (OPT)Rear Fog Lamps (Option)
STOP LAMP
RELAY MICROStoplamps
INT LAMP
RELAY MICROInterior Lamps
RUN/CRANK
RELAY MICROIgnition 1
AFTERBOIL
RELAY MICRO
(OPT)After Boil Pump (Option)
Circuit
Breakers Usage
WINDOW
MTRS C/BPower Window Motors Circuit
Breaker
5-105