Jonathan Yarden Oct 06, 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: 2005, 2006,
Underhood Fuse Block
The underhood fuse block is located in the engine compartment on the passengerâs side of the vehicle.
| Relays | Usage |
| LO SPEEDÂ FAN RELAYÂ MINI | Low Speed Fan Motor |
| HI SPEED FANÂ RELAY MINI | High Speed Fan Motor |
| ACCESSORYÂ RELAY MINI | Accessory Power Outlets |
| S/P FANÂ RELAY MINI | Series/Parallel Fan |
| PARK LAMPÂ RELAY MICRO | Parking Lamps |
| HORN RELAYÂ MICRO | Horn |
| HI BEAMÂ RELAY MICRO | High-Beam Headlamps |
| DRL RELAYÂ MICRO-OPT | Daytime Running Lamps |
| LO BEAMÂ RELAY/HIDÂ MINI-OPT | Low-Beam HID Headlamps (Option) |
| HDLP WASHÂ RELAYÂ MINI-OPT | Headlamp Washer Motor (Option) |
| SPARE | Not Used |
| BLOWERÂ RELAY MINI | Front Blower |
| FOG LAMPÂ RELAY MICRO | Fog Lamps |
| MAIN RELAYÂ MICRO | Powertrain/ECM |
| STARTERÂ RELAY MINI | Starter Solenoid |
| CMP CLUÂ RELAY MICRO | Compressor Clutch |
| IGN-1 RELAYÂ MICRO | Ignition Switch (ON) |
Â
| Wiring Harnesses | Usage |
| BODY W/H | Wiring Harness Connection |
| I/P W/H | Wiring Harness Connection |
| ENG W/H | Engine Wiring Harness Connection |
| FORWARD LAMP | Forward Lamp Wiring Harness Connection |
Â
| J Case | Usage |
| R REAR | RRPDB (Passengerâs Side Rear Power Distribution Box) |
| R REAR | RRPDB (Passengerâs Side Rear Power Distribution Box) |
| L REAR | LRPDB (Driverâs Side Rear Power Distribution Box) |
| L REAR | LRPDB (Driverâs Side Rear Power Distribution Box) |
| HI FAN | High Cooling Fan Motor |
| LOW FAN | Low Cooling Fan Motor |
| BLOWER | PWM Fan Motor Assembly |
| STARTER | Starter Solenoid |
| EBCM | Electronic Brake Control Module |
Â
| Fuses | Usage |
| RT PARK | Passengerâs Side Taillamp Assembly, Front Sidemarker and Front Parking Lamp Assembly |
| HORN | Dual Horn Assembly |
| LT HI BEAM | Driverâs Side High-Beam Headlamp |
| LT LOW BEAM | Driverâs Side Low-Beam Headlamp |
| RT LOW BEAM | Passengerâs Side Low-Beam Headlamp |
| RT HI BEAM | Passengerâs Side High-Beam Headlamp |
| HFV6 ECM | High Feature V6 ECMÂ (Electronic Control Module) |
| REAR WPR | Rear Wiper Motor |
| THEFT | ECM, TCM (Transmission Control Module), PASS-KeyŽ III+ Module |
| LT PARK | Driverâs Side Taillamp Assembly, Front Sidemarker and Front Parking Lamp Assembly |
| LIC/DIMMING | Rear License Plate Assembly, DIMÂ (Dash Integration Module) |
| DIM/ALDL | DIM, ALDL (Assembly Line Data Link) |
| FLASHER | Turn Signal/Hazard Flasher Module |
| V8 ECM | V8 ECM, Canister Purge |
| STRG CTLS | Steering Wheel Control Pad, Headlamp Switch |
| STARTER RLY | Jumper to Starter Relay |
| WASH NOZ | Driverâs and Passengerâs Side Heated Washer Nozzles |
| ODD COILS | Odd Ignition Coils, Fuel Injectors, Odd Injection Coils |
| TCM/IPC | TCM, ECM and IPCÂ (Instrument Panel Cluster) |
| SPARE | Not Used |
| ABS | Anti-Lock Brake System |
| VICS | Vehicle Information and Communication System |
| SPARE | Not Used |
| SPARE | Not Used |
| IGN SW | Ignition Switch (Power to IGN-3Â and CRANK) |
| VOLT CHECK | DIM |
| ECM/TCM | ECM, TCM, IPC, PASS-KeyŽ III+ Module |
| WPR MOD | Windshield Wiper Module Assembly |
| POSTO2 | Post O2 Sensors |
| COMP CLUTCH | Compressor Clutch |
| WPR SW | Windshield Wiper/Washer Switch |
| FOG LAMP | Fog Lamps |
| OUTLET | Center Console Accessory Power Outlet |
| EVEN COILS | Even Injection Coils |
| I/P OUTLET | Instrument Panel Accessory Power Outlet |
| CCP | Climate Control |
| PREO2/CAM | Driverâs and Passengerâs Side Oxygen Sensors, CAM Phaser |
| SPARE | Not Used |
| SPARE | Not Used |
| SPARE | Not Used |
Â
| Circuit Breakers | Usage |
| HDLP WASHÂ C/B-OPT | Headlamp Washer Motor (Optional) |
Rear Underseat Fuse Block (Driverâs Side)
The driverâs side rear fuse block is located under the rear seat on the driverâs side of the vehicle. The carpet must be lifted up to access the rear fuse block.
To access the fuse block, push in the two tabs located at each end of the fuse block cover. Then lift the cover off.
| Relays | Usage |
| BASS RELAYÂ MINI | Brake Apply Sensor |
| SPARE | Not Used |
| ELC RELAYÂ MINI | ELC (Electronic Level Control)Â Compressor Motor |
| SPARE | Not Used |
| L POSITIONÂ RELAY MICRO | Driverâs Side Position Lamp |
| R POSITIONÂ RELAY MICRO | Passengerâs Side Position Lamp |
| IGN 3 RELAY MICRO | Heated Seat Modules, Air Inlet Motor, Shifter Assembly |
| STANDINGÂ LAMPÂ RLY MICRO | Control for Position Lamp Relays |
| SPARE | Not Used |
| REV LAMP RELAY MICRO | ISRVM (Inside Rearview Mirror), License Plate Lamp Assembly |
Â
| Fuses | Usage |
| L FRT HTDÂ SEAT MOD | Driverâs Heated Seat Module |
| MEM/ADAPT SEAT | Driverâs Power Seat Switch, Memory Seat Module |
| THEFT | Universal Garage Door Opener, Intrusion Sensor, Diversity Antenna Module |
| REVERSE LAMP | ISRVM (Inside Rearview Mirror), License Plate Lamp Assembly |
| SPARE | Not Used |
| POSITION LAMP | Taillamp Assemblies, Front Position Lamp Assemblies |
| SPARE | Not Used |
| ELC COMP | ELC Compressor, ELC Solenoid |
| AUDIO | Radio, OnStar Module |
| FFS SW | Flip Fold Seat Switch |
| REAR DR MOD | Rear Door Modules |
| FFSM | Flip Fold Seat Module |
| DRIVERÂ DR MOD | Driverâs Door Module |
| BASS | Taillamps, Center High-Mounted Stop Lamp, Flasher Module, ABS Module, Trailer Lamps |
| HDLP LEVELING | Headlamp Leveling System Chassis Sensors (Export Only) |
| SPARE | Not Used |
| CCP | CCP (Climate Control Panel) |
| IGN 3 | Heated Seat Modules, Air Inlet Motor, Shifter Assembly |
Â
| J Case | Usage |
| AMP | Audio Amplifier |
| ELC | ELC Compressor |
Â
| Circuit Breakers | Usage |
| SEAT C/B | Power Seat Switches, Memory Seat Module |
Â
Rear Underseat Fuse Block (Passengerâs Side)
The passengerâs side rear fuse block is located under the rear seat on the passengerâs side of the vehicle. The carpet must be lifted up to access the rear fuse block.
To access the fuse block, push in the two tabs located at each end of the fuse block cover. Then lift the cover off.
| Relays | Usage |
| PRIMARYÂ QUARTER A/CÂ RELAY MINI | Rear A/C |
| SPARE | Not Used |
| REAR DEFOGÂ RELAY MINI | Rear Window Defogger |
| SPARE | Not Used |
| AFTERBOILÂ RELAY MICRO | Afterboil Pump |
| INT LAMP RELAY MICRO | Hush Panel Lamps, Puddle Lamps, Overhead Courtesy Lamp Assembly |
| IGN 1 RELAYÂ MICRO | Ignition Switch |
| SPARE | Not Used |
| REAR FOGÂ LAMPÂ RLY MICRO | Rear Fog Lamps (Export Only) |
| FUEL PUMPÂ MOTORÂ RLY MICRO | Fuel Pump Motor |
Â
| Fuses | Usage |
| INTERIOR LAMP | Hush Panel Lamps, Puddle Lamps, Overhead Courtesy Lamp Assembly |
| RT FRTÂ DR MOD | Passengerâs Door Module |
| RIM | RIM (Rear Integration Module), Ignition Switch, Key Lock Cylinder |
| REAR FOGÂ LAMP | Rear Fog Lamps (Export Only) |
| SUSPNTN | Suspension Module |
| VICS | TV Tuner Assembly, VICS (Vehicle Information Communication System) Module |
| SPARE | Not Used |
| POWERÂ SOUNDER | Power Sounder, Inclination Sensor |
| AFTERBOIL | Afterboil Heater Pump |
| CANISTERÂ VENT | Canister Vent Solenoid |
| FUELÂ PUMP MTR | Fuel Pump Motor |
| REAR HVAC | Rear Climate Control System |
| R FRT HTD SEAT MOD | Passengerâs Side Heated Seat Module |
| REAR HATCH | Rear Hatch Latch |
| AIR BAG | SDM (Sensing Diagnostic Module) |
| IGN 1 | Shifter, Power Sounder, Rear Parking Aid, Rearview Mirror, RIM |
| SPARE | Not Used |
| SPARE | Not Used |
Â
| J Case | Usage |
| SUNROOF MOD | Power Sunroof Module |
| REAR DEFOG | Rear Window Defogger Element |
Â
| Circuit Breakers | Usage |
| DR MODÂ PWR C/B | Door Modules |
WARNING:Â Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Still have questions or want to supplement the article? Discuss On Telegram