Cadillac CTS (2008) – fuse box diagram
Year of production: 2008
Underhood Fuse Block
The underhood fuse block is located on the passenger side of the engine compartment.
| Fuses | Usage |
| A/C CLTCH | Air Conditioning Clutch |
| ABS | Antilock Braking System (ABS) |
| AFS | Adaptive Forward Lighting System |
| AIRBAG IGN | Airbag Switch |
| 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 | Body Control Module 6 |
| BCM 7 | Body Control Module 7 |
| DISPLY | Display |
| DRL RT | Right Daytime Running Lamp (DRL) |
| DRL/ENG PUMP | Daytime Running Lamps |
| ECM | Engine Control Module (ECM) |
| ECM/TCM IGN | ECM, Transmission Control Module (TCM), Instrument Panel Cluster (IPC), PASS-Key III+ Module |
| EMIS 1 | Emission 1 |
| EMIS 2 | Emission 2 |
| EVEN COILS | Even Coils |
| FRT FOG | Front Fog Lamps |
| HDM WASH | Headlamp Driver Module Washer |
| HORN | Horn |
| LO BEAM DRL | Low-Beam DRL |
| LT HI BEAM | Left High-Beam Headlamp |
| LT LO BEAM | Left Low-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 Control Module |
| RT HI BEAM | Right High-Beam Headlamp |
| RT LO BEAM | Right Low-Beam Headlamp |
| RT LO BEAM | Right Low-Beam Headlamp |
| SPARE | Spare |
| SPARE | Spare |
| STR/WHL/ILLUM | Steering Wheel Illumination |
| TCM BATT | Transmission Control Module Battery |
| TRANS OIL RLY | Transmission Oil Relay |
| WPR | Windshield Wiper |
| WSW PUMP | Windshield Washer Pump |
| J Cases | Usage |
| ABS MTR | ABS Motor |
| BLWR | Blower |
| BRK VAC PUMP | Brake Vacuum Pump |
| FAN 1 | Cooling Fan 1 |
| FAN 2 | Cooling Fan 2 |
| REAR DEFOG | Rear Defogger |
| SPARE | Spare |
| SPARE | Spare |
| SPARE | Spare |
| STRTR | Starter |
| TRANS PUMP | Transmission Pump |
| WSW/HTR | Windshield Washer Heater |
| Relays | Usage |
| A/C CMPRSR CLTCH | Air Conditioning Compressor Clutch |
| DRL (W/O HID) LO BEAM (HID) | Daytime Running Lamps (without High Intensity Discharge), Low-Beam Headlamps (High Intensity Discharge) |
| ENG PUMP | Engine Pump |
| FAN S/P | Cooling Fan Series/Parallel |
| FAN 1 | Cooling Fan 1 |
| FAN 2 | Cooling Fan 2 |
| HEAD LAMP WASH | Headlamp Washer |
| HI BEAM | High-Beam Headlamp |
| HORN | Horn |
| IGN 1 | Ignition 1 |
| LO BEAM (W/O HID) LT DRL (HID) | Low-Beam (without High Intensity Discharge), Left Daytime Running Lamp (High Intensity Discharge) |
| PWR/TRN | Powertrain |
| REAR DEFOG | Rear Defogger |
| SPARE | Spare |
| STRTR | Starter |
| WPR | Windshield Wiper |
| WPR HI | Windshield Wiper High Speed |
| WSW PUMP | Windshield Washer Pump |
Rear Compartment Fuse Block
The rear compartment fuse block is located on top of the battery, on the right side of the trunk. The battery access door must be removed to access the fuse block.
| Relay | Usage |
| FUEL/PUMP | Fuel Pump |
| LCK | Lock |
| LF FRT/PWR/SEAT | Left Front Power Seat |
| LF/POS/LP | Left Position Lamp |
| PWR CLMN | Power Steering Column |
| PWR/WNDW | Power Window |
| REAR/FOG | Not Used |
| RT FRT/PWR/SEAT | Right Front Power Seat |
| RT/POS/LP | Right Position Lamp |
| SPARE | Spare |
| STOP/LP | Stoplamp |
| TRUNK/RELSE | Trunk Release |
| UNLCK | Unlock |
| 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 |
| LT/REAR/WNDW | Left Rear Window |
| MSM | Memory Seat Module |
| ONSTAR | OnStar® System |
| PDM | Passenger Door Module |
| RDO | Audio System |
| RDO/SPKR | Audio Speakers |
| REAR/FOG | Not Used |
| REAR/WNDW | Rear Window |
| RKE/PASS-KEY/MDL | Remote Keyless Entry System, Pass-Key Theft Deterrent Feature Module |
| RT/POS/LP | Right Position Lamp |
| RT/POS/LP | Right Position Lamp |
| RVC/SNSR | Regulated Voltage Control Sensor |
| S/ROOF | Sunroof |
| SPARE | Spare |
| SPARE | Spare |
| STOP/LP | Stoplamp |
| THEFT/UGDO | Theft Deterrent System, Universal Home Remote System |
| TRUNK/RELSE | Trunk Release |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.