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Jonathan Yarden Mar 25, 2021 · 5 min. read
In this article you will find a description of fuses and relays Cadillac,with photos of block diagrams and their locations.Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Year of production: 2010
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Underhood Fuse Block (CTS-V)
The underhood fuseblock is located on thepassenger side ofthe engine compartment.
| Fuses | Usage |
| A/C CLTCH | Air Conditioning Clutch |
| ABS | Antilock Braking System (ABS) |
| AFS | Adaptive Forward Lighting System |
| AIRBAG IGN | Airbag Switch |
| AQS/ISRVM/REARCAMERA | Air Quality Sensor/Inside Rear ViewMirror/Rear ViewCamera |
| BCM 1 | Body Control Module 1 |
| BCM 2 | Body Control Module 2 |
| BCM 3 | Body Control Module 3 |
| BCM 4 | Body Control Module 4 |
| BCM 5 | Body Control Module 5 |
| BCM 6, BCM 7 | Body Control Module 6 and 7 |
| DISPLY | Display |
| DRL RT | Right Daytime Running Lamp |
| DRL/WSW | Daytime Running Lamps/WindshieldWasher Pump |
| ECM | Engine Control Module (ECM) |
| ECM/TCM IGN | ECM, TransmissionControlModule (TCM),Instrument PanelCluster (IPC),PASS-Key III+Module |
| EMIS 1 | Emission 1 |
| EMIS 2 | Emission 2 |
| EVEN COILS | Even Coils |
| FRT FOG | Front Fog Lamps |
| HORN | Horn |
| INTCLR | Intercooler Pump |
| LT HI BEAM | Left High-Beam Headlamp |
| LT LO BEAM | Left Low-Beam Headlamp |
| LTR | Cigarette Lighter |
| MISC IGN | Ignition |
| NAV MTR | Navigation Motor |
| ODD COILS | Odd Coils |
| PED PROT | Not Used |
| PWR MODING | PassKey Module,Body ControlModule |
| RT HI BEAM | Right High-Beam Headlamp |
| RT LO BEAM | Right Low-Beam Headlamp |
| SPARE | Spare |
| STR/WHL/CNTRL | Steering Wheel Illumination |
| S/ROOF | Sunroof |
| TCM BATT | Transmission Control ModuleBattery |
| WPR | Windshield Wiper |
| J Cases | Usage |
| ABS MTR | ABS Motor |
| BLWR | Blower |
| EPB | Electric Park Brake |
| FAN 1 | Cooling Fan 1 |
| FAN 2 | Cooling Fan 2 |
| REAR DEFOG | Rear Defogger |
| SPARE | Spare |
| EPB | Electric Park Brake |
| STRTR | Starter |
| SPARE | Spare |
| WSW/HTR | Not used |
| Relays | Usage |
| A/C CMPRSR | Air Conditioning Compressor Clutch |
| FAN S/P | Cooling Fan Series/Parallel |
| FAN 1 | Cooling Fan 1 |
| FAN 2 | Cooling Fan 2 |
| FOG LAMP | Fog Lamps |
| HDLPWASH | Headlamp Washer |
| HI BEAM | High-BeamHeadlamp |
| HORN | Horn |
| IGN 1 | Ignition 1 |
| INTCLR | Intercooler Pump |
| LT DRL | Left DaytimeRunning Lamps |
| LO BEAM | Low Beam |
| PWR/TRN | Powertrain |
| REARDEFOG | Rear Defogger |
| RT DRL | Right DaytimeRunning Lamp |
| SPARE | Spare |
| STRTR | Starter |
| WPR | Windshield Wiper |
| WPR HI | Windshield WiperHigh Speed |
| WSW | Daytime RunningLamps/WindshieldWasher Pump |
Underhood Fuse Block (CTS Wagon)
The underhood fuseblock is located on thepassenger side ofthe engine compartment.
| Fuses | Usage |
| A/C CLTCH | Air Conditioning Clutch |
| ABS | Antilock Braking System (ABS) |
| AFS | Adaptive Forward Lighting System |
| AIRBAG IGN | Airbag Switch |
| AQS/ISRVM/REARCAMERA | Air Quality Sensor/Inside Rear ViewMirror/Rear ViewCamera |
| AWD | All-Wheel Drive |
| BCM 1 | Body Control Module 1 |
| BCM 2 | Body Control Module 2 |
| BCM 3 | Body Control Module 3 |
| BCM 4 | Body Control Module 4 |
| BCM 5 | Body Control Module 5 |
| BCM 6, BCM 7 | Body Control Module 6 and 7 |
| DISPLY | Display |
| DRL RT | Right Daytime Running Lamp |
| DRL/LTLO BEAM | Daytime RunningLamps/LeftLow-BeamHeadlamp |
| DRL/WSW | Daytime Running Lamps/WindshieldWasher Pump |
| ECM | Engine Control Module (ECM) |
| ECM/TCM IGN | ECM, TransmissionControlModule (TCM),Instrument PanelCluster (IPC),PASS-Key III+Module |
| EMIS 1 | Emission 1 |
| EMIS 2 | Emission 2 |
| EVEN COILS | Even Coils |
| FRT FOG | Front Fog Lamps |
| HDLPWASH | Headlamp Washer |
| HORN | Horn |
| LO BEAMDRL LEFT | Low-BeamDaytime RunningLamps (Left) |
| LT HI BEAM | Left High-Beam Headlamp |
| LT LO BEAM | Left Low-Beam Headlamp |
| LTR | Cigarette Lighter |
| MISC IGN | Ignition |
| NAV MTR | Navigation Motor |
| ODD COILS | Odd Coils |
| PED PROT | Not Used |
| PWR MODING | PassKey Module,Body ControlModule |
| PWROUTLET | Console AuxiliaryPower Outlet |
| RT HI BEAM | Right High-Beam Headlamp |
| RT LO BEAM | Right Low-Beam Headlamp |
| RTLO BEAM | Right Low-BeamHeadlamp |
| SPARE | Spare |
| STR/WHL/CNTRL | Steering Wheel Illumination |
| TCM BATT | Transmission Control ModuleBattery |
| TOSS/BRKVAC RLY | Transmission OutputSpeed Sensor/BrakeVacuum Relay |
| WPR | Windshield Wiper |
| J Cases | Usage |
| ABS MTR | ABS Motor |
| BLWR | Blower |
| BRKVAC PUMP | BrakeVacuum Pump |
| EPB | Electric Park Brake |
| FAN 1 | Cooling Fan 1 |
| FAN 2 | Cooling Fan 2 |
| REAR DEFOG | Rear Defogger |
| SPARE | Spare |
| STRTR | Starter |
| TRLR | Trailer Towing |
| WSW/HTR | Not used |
| Relays | Usage |
| A/C CMPRSR | Air Conditioning Compressor Clutch |
| DRL(W/O HID)LO BEAM(HID) | Daytime RunningLamps (without HighIntensity Discharge),Low-BeamHeadlamps (HighIntensity Discharge) |
| FAN S/P | Cooling Fan Series/Parallel |
| FAN 1 | Cooling Fan 1 |
| FAN 2 | Cooling Fan 2 |
| FOG LAMP | Fog Lamps |
| HDLPWASH | Headlamp Washer |
| HI BEAM | High-BeamHeadlamp |
| HORN | Horn |
| IGN 1 | Ignition 1 |
| LO BEAM(W/O HID)LT DRL(HID) | Low-Beam (withoutHigh IntensityDischarge), LeftDaytime RunningLamp (High IntensityDischarge) |
| PWR/TRN | Powertrain |
| REARDEFOG | Rear Defogger |
| RT DRL (HID) | Right DaytimeRunning Lamp (HighIntensity Discharge) |
| SPARE | Spare |
| STRTR | Starter |
| WPR | Windshield Wiper |
| WPR HI | Windshield WiperHigh Speed |
Rear Compartment Fuse Block (CTS)
The rear compartment fuse block is located on top ofthe battery, on the right side of the trunk. The batteryaccess door must be removed to access the fuse block.
| Relay | Usage |
| FUEL/PUMP | Fuel Pump |
| LCK | Lock |
| LT/POS/LP | Left Position Lamp |
| MRKR/LP | Not Used |
| REAR/FOG | Not Used |
| RT/POS/LP | Not Used |
| STOP/LP | Not Used |
| TRUNK/RELSE | Trunk Release |
| UNLCK | Unlock |
| Mini-fuses | Usage |
| AIRBAG | Airbag System |
| AMP | Amplifier |
| AUX/OUTLET | Auxiliary Power Outlet |
| CNSTR/VENT | Canister Vent |
| DR/LCK | Door Lock |
| ECM | Engine Control Module (ECM) |
| EE SEAT | Not Used |
| FUEL/PUMP | Fuel Pump |
| LT/POS/LP | Left Position Lamp |
| MSM | Memory Seat Module |
| ONSTAR | OnStar® System |
| PDM | Passenger Door Module |
| RDO | Audio System |
| RDO/SPKR | Audio Speakers |
| REAR/FOG | Not Used |
| RKE/PASS-KEY/MDL | Remote Keyless Entry System,Pass-Key Theft Deterrent FeatureModule |
| RT/POS/LP | Not Used |
| RT/POS/LP | Right Position Lamp |
| RVC/SNSR | Regulated Voltage Control Sensor |
| S/ROOF | Sunroof |
| STOP/LP | Not Used |
| THEFT/UGDO | Theft Deterrent System, UniversalHome Remote System |
| TRUNK/RELSE | Trunk Release |
| Circuit Breakers | Usage |
| DRV/PWR/SEAT | Left FrontPower Seat |
| LT/REAR/WNDW | Left Rear Window |
| PWR CLMN | Power SteeringColumn |
| PWR/WNDW | Power Window |
| PASS/PWR/SEAT | Right FrontPower Seat |
| REAR/WNDW | Right Rear Window |
Rear Compartment Fuse Block (CTS-V)
The rear compartment fuse block is located on top ofthe battery, on the right side of the trunk. The batteryaccess door must be removed to access the fuse block.
| Relay | Usage |
| FUEL/PUMP | Fuel Pump |
| LCK | Lock |
| LT/POS/LP | Left Position Lamp |
| MRKR/LP | Not Used |
| REAR/FOG | Not Used |
| RT/POS/LP | Not Used |
| STOP/LP | Not Used |
| TRUNK/RELSE | Trunk Release |
| UNLCK | Unlock |
| Mini-fuses | Usage |
| AIRBAG | Airbag System |
| AMP | Amplifier |
| AUX/OUTLET | Auxiliary Power Outlet |
| CNSTR/VENT | Canister Vent |
| DR/LCK | Door Lock |
| ECM | Engine Control Module (ECM) |
| EE SEAT | Not Used |
| FUEL/PUMP | Fuel Pump |
| LT/POS/LP | Left Position Lamp |
| MSM | Memory Seat Module |
| ONSTAR | OnStar® System |
| PDM | Passenger Door Module |
| RDO | Audio System |
| RDO/SPKR | Audio Speakers |
| REAR/DIFF/PUMP | Rear DifferentialCooling Pump |
| REAR/FOG | Not Used |
| RKE/PASS-KEY/MDL | Remote Keyless Entry System,Pass-Key Theft Deterrent FeatureModule |
| RT/POS/LP | Right Position Lamp |
| RT/POS/LP | Not used |
| RVC/SNSR | Regulated Voltage Control Sensor |
| SPARE | Spare |
| STOP/LP | Not Used |
| THEFT/UGDO | Theft Deterrent System, UniversalHome Remote System |
| TRUNK/RELSE | Trunk Release |
| Circuit Breakers | Usage |
| DRV/PWR/SEAT | Left FrontPower Seat |
| LT/REAR/WNDW | Left Rear Window |
| PASS/PWR/SEAT | Right FrontPower Seat |
| PWR CLMN | Power SteeringColumn |
| PWR/WNDW | Power Window |
| REAR/WNDW | Right Rear Window |
Rear Compartment Fuse Block (Wagon)
The rear compartment fuse block is located on top ofthe battery, on the right side of the trunk. The batteryaccess door must be removed to access the fuse block.
| Relay | Usage |
| FUEL/PUMP | Fuel Pump |
| LCK | Lock |
| LT/POS/LP | Left Position Lamp |
| MRKR/LP | Not Used |
| REAR/FOG | Not Used |
| RT/POS/LP | Not Used |
| STOP/LP | Not Used |
| TRUNK/RELSE | Trunk Release |
| UNLCK | Unlock |
| Mini-fuses | Usage |
| AIRBAG | Airbag System |
| AMP | Amplifier |
| AUX/OUTLET | Auxiliary Power Outlet |
| CNSTR/VENT | Canister Vent |
| DR/LCK | Door Lock |
| ECM | Engine Control Module (ECM) |
| FUEL/PUMP | Fuel Pump |
| LT/POS/LP | Left Position Lamp |
| MSM | Memory Seat Module |
| ONSTAR | OnStar® System |
| PDM | Passenger Door Module |
| RDO | Audio System |
| RDO/SPKR | Audio Speakers |
| REAR/FOG | Not Used |
| RKE/PASS-KEY/MDL | Remote Keyless Entry System,Pass-Key Theft Deterrent FeatureModule |
| RT/POS/LP | Not Used |
| RT/POS/LP | Right Position Lamp |
| RVC/SNSR | Regulated Voltage Control Sensor |
| S/ROOF | Sunroof |
| STOP/LP | Not Used |
| TRLR/POS/LP | Trailer Turn PositionLamps |
| WASH/PUMP | WindshieldWasher Pump |
| Circuit Breakers | Usage |
| DRV/PWR/SEAT | Left FrontPower Seat |
| LT/REAR/WNDW | Left Rear Window |
| PASS/PWR/SEAT | Right FrontPower Seat |
| PWR CLMN | Power SteeringColumn |
| PWR/WNDW | Power Window |
| REAR/WNDW | Right Rear Window |
WARNING:Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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