Cadillac STS (2007) – fuse box diagram

Year of production: 2007

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 mk2 – 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, Variable Intake (V6), Purge Solenoid (V6), Camshaft Phasers (V6)
R REAR	Passenger’s Side Rear Fuse Block
WPR SW	Wiper/Washer Switch
FOG LAMP	Fog Lamps
OUTLET	Rear Accessory Power 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
RAIN SSR	Rain Sensor, Headlamp Washer, Tire Pressure Monitor
CCP	Climate Control
SMT BM-OPT	IntelliBeam™ Relay (If Equipped)
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	Driver’s Side Park Lamp, Driver’s Side 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, Steering Column Switch
V8 ECM	V8 Engine Control Module (ECM), Evap. Solenoid, Vacuum Bypass
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 Control Module (TCM), Instrument Panel, Engine Control
SPARE	Spare
MAF	Mass Air Flow Sensor (V6)
HIGH FAN	Cooling Fan – High Speed
LOW FAN	Cooling Fan – Low Speed
RT PARK	Passenger’s Side Park Lamp, Right Taillamp
HORN	Horn
LT HI BEAM	Driver’s Side Headlamp High-Beam
LT LOW BEAM	Driver’s Side Headlamp Low-Beam
RT LOW BEAM	Passenger’s Side Headlamp Low-Beam
RT HI BEAM	Right Headlamp High-Beam
HFV6 ECM	High Feature V6 Engine Control Module (ECM), Mass Air Flow Sensor (MAF) (V8)
HDLP WASH RELAY JUMPER -OPT	Headlamp Washer

Relays	Usage
HDLP WASH RELAY JUMPER -OPT	Headlamp Washer
STARTER RELAY MINI	Starter
SPARE	Spare
FOG LAMP RELAY MICRO	Fog Lamps
CMP CLU RELAY MICRO	Air Conditioning Compressor Clutch
BLOWER RELAY MINI	Front Blower Motor
POWERTRAIN RELAY MICRO	Engine Controls
RUN/CRANK RELAY MICRO	Ignition 1, Starter, Washer Nozzle, Air Quality, Anti-lock Brake System, Climate Control Panel, Transmission Control Module, Instrument Panel Cluster, Mass Airflow Sensor, Engine Control Module
LOW SPEED FAN RELAY MINI	Cooling Fan Low Speed
ACCESSORY RELAY MINI	Ignition 3, Rain Sensor, Headlamp Washer, Windshield Wiper/Washer Module
PARK LAMP RELAY MICRO	Parking Lamps, Instrument Panel Dimming, Rear License Plate Lamps
HIGH BEAM RELAY MICRO	Headlamp High-Beam
LOW BEAM RELAY/HID MINI-OPT	Low-Beam/High Intensity Discharge
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)

Harness Connection	Usage
ENG W/H	Engine Harness Connection
BODY W/H	Body Harness Connection
BODY W/H	Body Harness Connection

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 mk2 – fuse box – rear compartment (driver’s side)

Fuses	Usage
AMP	Amplifier
INTERCOOLER PUMP (OPT)	Intercooler Pump (Option)
THEFT/SHIFTER	Theft Sensors, Auto Shifter
MR-RTD MOD (OPT)	MR-CVRTD Suspension Module (Option)
REAR DR MOD	Rear Door Modules
ELC SOL (OPT)	Automatic Level Control, Exhaust Solenoid (Option)
DRIVER DR MOD	Driver Door Module, Front Door SubWoofers (Option)
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 (Option)
DPM	Memory Seat, Lumbar
TRUNK DR VALET	Trunk Release, Valet Lockout Switch
REVERSE LAMP	Reverse Lamps, Rear Parking Aid, Inside Rearview Mirror
AIR BAG	Airbag
POSITION LAMPS (OPT)	Rear Taillamps
ELC RELAY (OPT)	Automatic Level Control (Option)

Relays	Usage
INTERCOOLER PUMP MICRO (OPT)	Intercooler Pump (Option)
ELC RELAY (OPT)	Automatic Level Control 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, Inside Rearview Mirror
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

Diode	Usage
SPARE	Spare

Joint Connector	Usage
JOINT CONNECTOR	Splice Pack (Green)

Passenger’s Side

Cadillac STS mk2 – fuse box – rear compartment (passenger’s side)

Fuses	Usage
SPARE	Spare
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 Rear Integration Module
RUN/CRANK	Ignition 1, Fog Lamps, Compressor Clutch, Engine Run/Crank Relays
HTD STG/CLM	Heated Steering Wheel, Column Lock Module
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/ DIFF PUMP (OPT)	After Boil, Rear Differential Cooling Pump
RIM	Ignition to Rear Integration Module

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

Diodes	Usage
TRUNK DIODE	Trunk Release

Joint Connector	Usage
JOINT CONNECTOR	Splice Pack (Blue)

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