Cadillac STS mk1 (First Generation; 2005 – 2006) – fuse box diagram

Cadillac STS mk1 (First Generation; 2005 – 2006) – fuse box diagram

Year of production: 2005, 2006

Underhood Fuse Block

The underhood fuse block is located in the front of the engine compartment on the passenger’s side of the vehicle.

Cadillac STS mk1 - fuse box - engine compartment
Cadillac STS mk1 – fuse box – engine compartment
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 COILS Even Ignition Coils, Even Fuel Injectors
L REAR Left Rear Fuse Block
WPR MOD Wiper Module
POST 02 Oxygen Sensor
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 SSR Rain Sensor, Headlamp Washer, Tire Pressure Monitor
CCP Climate Control
SMT BM-OPT Smart Beam Relay (Option)
EXT LIGHTS Low Beam Relay, High Beam Relay, Park Lamp Relay
VOLT CHECK Instrument Panel Module
ECM/TCM Engine Control Module, Transmission Control Module, Easy Key Module, Instrument Panel Cluster
SPARE Spare
SPARE Spare
LT PARK Left Park Lamp, Left Taillamp
LIC DIMMING License Plate, Instrument Panel Dimming
IPM ALDL Instrument Panel Module Assembly Line Data Link Connector
HUD Heads-Up Display, Column Lock Module
V8 ECM V8 ECM, Evap Solenoid
ABS Anti-Lock Brake Controller
STR RLY Starter Relay
WASH NOZ/AQS Heated Washer Nozzles, Air Quality Sensor™
ODD COILS Odd Ignition Coils, Odd Fuel Injectors
TCM IPC Transmission, 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 ECM High Feature V6 Engine Control Module
HDLP WASH RELAY JUMPER -OPT Headlamp Washer
STARTER RELAY MINI Starter
SPARE Spare
FOG LAMP RELAY MICRO Fog Lamps
CMP CLU RELAY MICRO A/C Compressor Clutch
BLOWER RELAY MINI Front Blower Motor
POWERTRAIN RELAY MICRO Engine Controls
RUN/CRANK RELAY MICRO Ignition 1
LOW SPEED FAN RELAY MINI Cooling Fan Low Speed
ACCESSORY RELAY MINI Ignition 3
PARK LAMP RELAY MICRO Parking Lamps

 

Relays Usage
HIGH BEAM RELAY MICRO High Beams
LOW BEAM RELAY/HID MINI-OPT Low Beam/HID
HIGH SPEED FAN RELAY MINI Cooling Fan High Speed
S/P FAN RELAY MINI Cooling Fan Series/Parallel
HORN RELAY MICRO Horn
SPARE Spare

 

Circuit brakers Usage
HDLP WASH C/B -OPT Headlamp Washer (Option)

Rear Underseat Fuse Block

There is a fuse block located under the rear seat on the driver’s side and passenger’s side of the vehicle. The rear seat cushion must be removed to access the fuse blocks.

Driver’s Side

Cadillac STS mk1 - fuse box - rear compartment (driver's side)
Cadillac STS mk1 – fuse box – rear compartment (driver’s side)
Fuses Usage
SPARE Spare
AMP Amplifier
SPARE Spare
SPARE Spare
THEFT/SHIFTER Theft Sensors, Auto Shifter
MR-RTD MOD (OPT) MR-CVRTD Suspension Module (Option)
REAR DR MOD Rear Door Modules
ELC SOL (OPT) Exhaust Solenoid
DRIVER DR MOD Driver Door Module
TV/VICS Infotainment (Export Only)
REAR HTD SEATS Rear Heated Seats
SPARE Spare
SPARE Spare
IGN3 Front Passenger Heated Seat, Auto Shifter, Occupant Protection
RR SHLF SPEAKER Rear Shelf Speaker
DPM Memory Seat, Lumbar
TRUNK DR VALET Trunk Release, Valet
REVERSE LAMP Reverse Lamps, Rear Parking Aid, Inside Rearview Mirror
AIR BAG Airbag
POSITION LAMPS (OPT) Rear Taillamps
JOINT CONNECTOR Joint Connector

 

Relays Usage
ELC RELAY (OPT) ELC Compressor (Option)
L POSITION RELAY MICRO Left Rear Taillamp, Position Lamps (Option)
TRUNK DR REL RELAY MICRO Trunk Release Motor
REV LAMP RELAY MICRO Reverse Lamps, Rear Parking Aid
R POSITION RELAY MICRO Right Rear Taillamp, Position Lamps (Option)
RUN RELAY MICRO Ignition 3
STNDBY LAMP RLY (OPT) Rear Taillamps, Position Lamps (Option)

 

Circuit Breakers Usage
SEATS C/B Power Seat

 

Passenger’s Side

Cadillac STS mk1 - fuse box - rear compartment (passenger's side)
Cadillac STS mk1 – fuse box – rear compartment (passenger’s side)
Fuses Usage
SPARE Spare
TRUNK DIODE Trunk Diode
CANISTER VENT Canister Vent Solenoid
RT TURN-RIM Right Turn Signal
SUNROOF (OPT) Sunroof Module (Option)
STOP LAMPS Stoplamps
FUEL PUMP Fuel Pump
RF HTD ST/S-BAND Front Passenger Heated Seat, S-Band Antenna
RADIO/ONSTAR Radio/OnStar®
AIR BAG Airbags
RIM Battery to RIM
RUN/CRANK Ignition 1
HTD STG/CLM Heated Steering Wheel
REAR DEFOG Rear Defogger
INTERIOR LAMP Interior Lamps
PSG DR MOD Front Passenger Door Module
LT TURN-RIM Left Turn Signal
REAR FOG LAMP (OPT) Rear Fog Lamps (Option)
AFTERBOIL (OPT) After Boil Pump
RIM Ignition to RIM
JOINT CONNECTOR Joint Connector

 

Relays Usage
SPARE Spare
REAR DEFOG RELAY MINI Rear Defog
FUEL PUMP RELAY MICRO Fuel Pump
REAR FOG LAMP RLY MICRO (OPT) Rear Fog Lamps (Option)
STOP LAMP RELAY MICRO Stoplamps
INT LAMP RELAY MICRO Interior Lamps
RUN/CRANK RELAY MICRO Ignition 1
AFTERBOIL RELAY MICRO (OPT) After Boil Pump (Option)

 

Circuit Breakers Usage
WINDOW MTRS C/B Power Window Motors Circuit Breaker

 

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.