Fuses and relays Cadillac STS (2005-2011)

The mid-sized luxury sedan Cadillac STS was produced from 2005 to 2011 (facelift in 2008).

Fuse Layout Cadillac STS 2005-2011

Fuses and relays Cadillac STS (2005-2011)

Fuse box location

Engine compartment

Fuses and relays Cadillac STS (2005-2011)

Passenger compartment

Two fuse boxes are located under the rear seats.Fuses and relays Cadillac STS (2005-2011)

Fuse box diagrams

2005, 2006, 2007

Engine compartment

Fuses and relays Cadillac STS (2005-2011)

Assignment of the fuses and relays in the engine compartment (2005-2007)

Name Description
Fuses
BLOWER Blower Motor
R REAR Passenger’s Side Rear Fuse Block
I/P OUTLET Front Auxiliary Outlet
CCP Climate Control, Headlamp Leveling
PRE O2/CAM 2005-2006: Oxygen Sensor, CAM Phasers
2007: 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 Auxiliary Power Outlet
EVEN COILS Even Ignition Coils, Even Fuel Injectors
L REAR Left Rear Fuse Block
WPR MOD Wiper Module
POST O2 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 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
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 2005-2006: Heads-Up Display, Column Lock Module
2007: Heads-Up Display, Column Lock Module, Steering Column Switch
V8 ECM 2005-2006: V8 ECM, Evap Solenoid
2007: 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 2005-2006: Transmission, Instrument Panel, Engine Control
2007: Transmission Control Module (TCM), Instrument Panel, Engine Control
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 2005-2006: High Feature V6 Engine Control Module
2007: High Feature V6 Engine Control Module (ECM), Mass Air Flow Sensor (MAF) (V8)
HDLP WASH RELAY JUMPER -OPT Headlamp Washer
Circuit brakers
HDLP WASH C/B -OPT Headlamp Washer (Option)
Relays
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 2005-2006: Ignition 1
2007: 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 2006-2006: Ignition 3
2007: Ignition 3, Rain Sensor, Headlamp Washer, Windshield Wiper/Washer Module
PARK LAMP RELAY MICRO 2005-2006: Parking Lamps
2007: 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
Harness Connection
ENG W/H Engine Harness Connection
BODY W/H Body Harness Connection
BODY W/H Body Harness Connection
Rear Underseat Fuse Box (Driver’s Side)

Fuses and relays Cadillac STS (2005-2011)

Assignment of the fuses and relays in the Rear Underseat Box (Driver’s Side) (2005-2007)

Name Description
Fuses
AMP Amplifier
INTERCOOLER PUMP Intercooler Pump (Option)
THEFT/SHIFTER Theft Sensors, Auto Shifter
MR-RTD MOD MR-CVRTD Suspension Module (Option)
REAR DR MOD Rear Door Modules
ELC SOL 2005-2006: Exhaust Solenoid
2007: Automatic Level Control, Exhaust Solenoid (Option)
DRIVER DR MOD 2005-2006: Driver Door Module
2007: 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 Rear Taillamps
ELC RELAY Automatic Level Control (Option)
Relays
INTERCOOLER PUMP MICRO Intercooler Pump (Option)
ELC RELAY 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 2005-2006: Reverse Lamps, Rear Parking Aid
2007: 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 Rear Taillamps, Position Lamps (Option)
Circuit Breakers
SEATS C/B Power Seat
Diode
SPARE Spare
Joint Connector
JOINT CONNECTOR Splice Pack (Green)
Rear Underseat Fuse Box (Passenger’s Side)

Fuses and relays Cadillac STS (2005-2011)

Assignment of the fuses and relays in the Rear Underseat Box (Passenger’s Side) (2005-2007)

Name Description
Fuses
SPARE Spare
CANISTER VENT Canister Vent Solenoid
RT TURN-RIM Right Turn Signal
SUNROOF 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 2005-2006: Ignition 1
2007: 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 2005-2006: After Boil Pump
2007: After Boil, Rear Differential Cooling Pump
RIM Ignition to Rear Integration Module
Relays
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 After Boil Pump (Option)
Circuit Breakers
WINDOW MTRS C/B Power Window Motors Circuit Breaker
Diodes
TRUNK DIODE Trunk Release
Joint Connector
JOINT CONNECTOR Splice Pack (Blue)

2008, 2009, 2010, 2011

Engine compartment

Fuses and relays Cadillac STS (2005-2011)

Assignment of the fuses and relays in the engine compartment (2008-2011)

Name Description
J-Case Fuses
ABS MTR ABS Module- ABS Module-StabiliTrak®
AFS Active Front Steering
BLWR Blower Motor
FAN 1 Cooling Fan-Low Speed
FAN 2 Cooling Fan-High Speed
LPDB 1 Driver Side Rear Fuse Block
LPDB 2 Driver Side Rear Fuse Block
RPDB 1 Passenger Side Rear Fuse Block
RPDB 2 Passenger Side Rear Fuse Block
SPARE Spare
Mini Fuses
A/C CLTCH Air Conditioning Compressor Clutch
ABS ABS Module-StabiliTrak®
ABS IGN Antilock Brake Controller
AUX OUTLET Rear Accessory Power Outlet
BRK VAC PUMP Brake Vacuum Pump
CCP Climate Control Panel
CCP/RLY COILS Climate Control Panel, Headlamp Level Control, Active Cruise Control, Relay Coils, Starter, Front Blower
ECM 1 Engine Control Module (ECM)
ECM/TCM BATT ECM, Transmission Control Module (TCM)
ECM/TCM IGN ECM, TCM, Instrument Panel Cluster
EKM/I/P MDL Easy Key Module (EKM), Instrument Panel Module (I/P MDL)
EVEN COILS Even Ignition Coils, Even Fuel Injectors
FOG LAMP Front Fog Lamps
FRT PWR OUTLET Front Accessory Power Outlet
FUEL COOL Fuel Cooling
HORN Horn
HTD WASH/AQS Heated Headlamp Washer, Air Quality Sensor
HUD Heads-Up Display, Steering Column Switch
I/BEAM IntelliBeam Relay
I/P MDL/ALDL Instrument Panel Module, Assembly Line Data Link Connector
LIC DIM License Plate, Instrument Panel Dimming
LT HI BEAM Driver Side High Beam Headlamp
LT LO BEAM Driver Side Low Beam Headlamp
LT PRK Driver Side Park Lamp/Driver Side Taillamp
ODD COILS Odd Ignition Coils, Odd Fuel Injectors
POST O2 SNSR Post Oxygen Sensor
PRE O2 SNSR Pre Oxygen Sensor, CAM Sensors
RAIN SNSR/TPM Rain Sensor, Relay Coil: Headlamp Wash
RT HI BEAM Passenger Side High Beam Headlamp
RT LO BEAM Passenger Side Low Beam Headlamp
RT PRK Passenger Side Park Lamp, Passenger Side Taillamp
SPARE Spare
V/CHK Instrument Panel Module-Voltage Check
WPR Wipe/Wash Module Assembly
WPR SW/VICS Rain Sensor, Wiper Switch
Relays
A/C CMPRSR CLTCH Air Conditioning Compressor Clutch
ACCY Accessory Rain Sensor, Headlamp Washer Relay Coil, Windshield Wiper/Washer Module
BRK VAC PUMP Brake Vacuum Pump
FAN S/P Cooling Fan Series/Parallel
FOG LAMP Fog Lamps
FRT BLWR Front Blower Motor
FUEL COOL Fuel Cooling Pump
HI BEAM High Beam Headlamp
HI FAN SPD Cooling Fan High Speed
HORN Horn
LO FAN SPD Cooling Fan Low Speed
LOW BEAM W/O HID/HID Low Beam Headlamp, High Intensity Discharge (HID)
PRK LAMP Parking Lamps, Instrument Panel Dimming, Rear License Plate Lamps
PWR/TRN Engine Controls
RUN CRNK Heated Washer Nozzle, Air Quality, Antilock Brake System, Climate Control Panel, TCM, ECM, Instrument Control Panel, Instrument Control Panel Cluster
SPARE Spare
STRTR Starter
WPR HI Windshield Wiper High Speed
Circuit Breakers
HDLP WASH Headlamp Washer Motor (Circuit Breaker)
Rear Underseat Fuse Box (Driver’s Side)

Fuses and relays Cadillac STS (2005-2011)

Assignment of the fuses and relays in the Rear Underseat Box (Driver’s Side) (2008-2011)

Name Description
Fuses
AMP Amplifier
INCLR PUMP Inner Cooler Pump (Option)
THEFT/SHFT Theft Sensors, Auto Shifter, Power Sounder
MRTD MDL Magnetic Ride Control Module (Option)
REAR DR MDL Rear Door Modules
ELC EXH Electronic Level Control, Exhaust Solenoid (Option)
DDM Driver Door Module, Front Door SubWoofers (Option)
TV/VICS/SCM Infotainment (Export Only), Supervisory Control Module (Option)
REAR HTD/SEATS Rear Heated Seats
SPARE Spare
IGN3 Front Passenger Heated Seat, Auto Shifter, Occupant Protection, Electronic Tension Reducer for Seatbelt
REAR SHLF SPKR Rear Shelf Speaker (Option)
MSM Memory Seat Module Lumbar
TRUNK RELSE SW Trunk Release, Valet Lockout Switch
BCK/UP LAMP Reverse Lamps, Rear Parking Aid, Inside Rearview Mirrors
AIR BAG/BATT Airbag
POS LAMPS Rear Taillamps
ELC CMPRSR Automatic Level Control (Option)
Relays
INCLR PUMP Inner Cooler Pump (Option)
ELC CMPRSR Electronic Level Control, Compressor (Option)
LT POS Left Rear Taillamp, Position Lamps (Option)
RT POS Right Rear Taillamp, Position Lamps (Option)
RUN Ignition 3
STDBY LAMP Rear Taillamps, Position Lamps (Option)
TRUNK RELSE Trunk Release Motor
BCK/UP LAMP Reverse Lamps, Rear Parking Aid, Inside Rearview Mirror
Circuit Breakers
PWR SEATS Power Seats
Diodes
SPARE Spare
Joint Connector
J/C Splice Pack (Green)
Rear Underseat Fuse Box (Passenger’s Side)

Fuses and relays Cadillac STS (2005-2011)

Assignment of the fuses and relays in the Rear Underseat Box (Passenger’s Side) (2008-2011)

Name Description
Fuses
AIRBAG/IGN Sensing and Diagnostic Monitor, Automatic Occupant Sensor, Passenger Supplemental Inflatable Restraint
CNSTR/VENT Canister Vent Solenoid
DIFF PUMP Rear Differential Pump
FRT PDM Front Passenger Door Module, Right Power Subwoofer
FUEL PUMP Fuel Pump
HTD STR Heated Steering Wheel
RF HTD/SEAT/XM Front Passenger Heated Seat, S-Band™ Antenna
RDO/ONSTAR Radio, OnStar®
INT LAMP Interior Lamps
LT TRN/LDW Left Turn Signal, Lane Departure Warning (Option)
REAR DEFOG Rear Defogger
REAR/FOG Rear Fog Lamps (Option)
RIM Rear Integration Module
RIM /RPA /ISRVM /CLM Rear Integration Module, Rear Parking Aid, Inside Rearview Mirror, Column Lock Module, Power Sounder, Active Front Steering (AFS), Supervisory Control Module
RUN/CRNK UHBEC Run, CRNK Relay Coil, Rear Fog Lamp Relay Coil
S/ROOF Sun Roof Module (Option)
SPARE Spare
STOP LAMPS Stop Lamps
RT TRN/SZBA Right Turn Signal, Side Blind Zone Alert (Option)
Relays
DIFF PUMP Rear Differential Pump (Option)
FUEL PUMP Fuel Pump
INT LAMP Interior Lamps
REAR DEFOG Rear Defogger
REAR/FOG Rear Fog Lamps (Option)
RUN/CRNK Ignition 1
SPARE Spare
STOP LAMP Stop Lamp
Circuit Breakers
WINDOW MTRS Power Window Motors Circuit Breaker
Diodes
TRUNK DIODE Trunk Release
Joint Connector
J/C Splice Pack (Blue)

Video to the article

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