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: 1999
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Maxi Fuses/Relay Center
The MaxiFuses and relays are located next to the enginecompartment fuse block on the driver’s side of theengine.
| MaxiFuse (8-Way) | Usage |
| BODY 1 | Road Sensing Suspension (RSS) Fuse (DeVille Concours Only),Convenience Fuse, BATT Fuse,Antenna Fuse, Right and Left PositionLamp Relays (Export),Hazard/Position Lamp Cut-Out Relay(Export), Trunk and Fuel DoorRelease Solenoids and Relays, DoorLock/Unlock Relays, Damper Relay(DeVille Concours Only), ParkingLamp Relay, Right and Left Park Fuse |
| BODY 2 | Defog Relay, Pull-Down Fuse, Rightand Left Heated Seat Fuse, ElectronicLevel Control (ELC) Fuse/Relay,Heated Mirror Fuse, Heated BackliteFuse, ELC Circuit Breaker |
| BODY 3 | Controlled Power Relay, ControlledPower Back-Up Relay, Cluster Fuse,Passenger Zone Module (PZM) Fuse,Radio Fuse, Delayed Accessory Bus(DAB) Relay, Trunk and Fuel DoorRelease Relay, High Beam Relay,Comfort Fuse, AMP (Bose Only) Fuse |
| INADVERT | Inadvertent Power Relay, InteriorLamps Fuse, Cigarette Lighter-1 Fuse,Cigarette Lighter-2 Fuse, CourtesyLamp Relay |
| LAMPS | Headlamps Fuse/Relay, High/LowBeam Control Relay, Fog Lamp Fuse(DeVille Concours Only), HazardFuse, Mirror Fuse, Inadvertent PowerRelay, Right and Left High BeamFuse, Right and Left Low Beam Fuse,Stop Fuse, Fog Lamp Relay (DeVilleConcours Only), DRL Relay,DRL Fuse |
| IGN 1 | Rear Ignition-1 Relay, Wiper Fuse,Relay Ignition-1 Fuse, SupplementalInflatable Restraint (SIR) Fuse,Accessory Relay |
| WINDOWS | Delayed Accessory Bus (DAB) Relay |
| SEATS | Horn Relay, Driver and PassengerLumbar In/Out Relays, Driver andPassenger Lumbar Up/Down Relays |
| MaxiFuse (6-Way) | Usage |
| BATT 3 | Steering Column Ignition Switch |
| BATT 2 | Steering Column Ignition Switch |
| IGN 1 | Front Ignition-1 Relay, OxygenSensor 1 and 2 Fuse, Fuel Fuse, CruiseFuse, Fuel Pump Relay |
| BATT 1 | Starter Relay and Solenoid, Park/RevFuse, Park Relay, Powertrain ControlModule (PCM) Fuse, AC CompressorFuse and Relay, Cooling Fan Relays,Reverse Relay |
| BRAKES | Anti-Lock Brake System (ABS) BrakeModulator |
| COOL FNS | Cooling Fan Relays 1 and 3 |
| Power Distribution Block | Usage |
| ACCESSORY | Accessories |
| HEAD LPS | Headlamps |
| HORN | Horn |
| FOG LPS | Fog Lamps |
| DRL | Daytime Running Lamps (DRL) |
| HI/LO BEAM | High and Low-Beam Headlamps |
| Relays |
| INADVERT POWER RELAY |
| IGN 1 RELAY |
| STARTER RELAY |
Fuses and Circuit Breakers
Underhood Fuse Block
The underhood fuse block is located next to the engineair cleaner/filter on the driver’s side of the engine. Liftthe cover to gain access.
| Fuse | Usage |
| DRL | Daytime Running Lamps (DRL) |
| CNR LPS | Cornering Lamp Switch, Right andLeft Cornering Lamps, Right andLeft Position Lamp Relays (Export) |
| INT LPS | Trunk Lamp, Courtesy Lamps, FrontVanity Lamps, Glove Box Lamp,Garage Door Opener, CourtesyLamp Relay, Front Reading Lamps,Rear Vanity Lamps and ReadingLamps (DeVilleConcours/d’Elegance Only) |
| CIG LTR1 | Front Cigarette Lighter,Rear Cigarette Lighter(DeVille Concours Only) |
| CIG LTR 2 | Right and Left RearCigarette Lighters |
| L HDLP LO | Left Low-Beam Headlamp |
| R HDLP LO | Right Low-Beam Headlamp |
| L HDLP HI | Left High-Beam Headlamp |
| R HDLP HI | Right High-Beam Headlamp |
| FOG | Fog Lamp Relay (DeVille ConcoursOnly), Right and Left Fog Lamps(DeVille Concours Only) |
| HDLPS | Headlamp Relay, High/Low BeamControl Relay, Right and LeftLow/High Beam Fuses |
| HAZARD | Electronic Flasher Module,Turn/Hazard Switch, Right andLeft Front Turn Lamps, Right andLeft Rear Turn Lamps, Right andLeft Repeater Lamps(Export), Cluster |
| STOP | Stoplamp Switch, Turn HazardSwitch, Anti-Lock Brake System(ABS) Controller, Stepper MotorCruise Control, Right andLeft Rear Stoplamps (Export),Center High-Mounted Stoplamp |
| MIRROR | Inadvertent Power Relay, LeftOutside Rearview Mirror Switch,ALDL, Memory Mirror Module(Optional), Dimmer Switch, Cluster |
| DRL | Daytime Running Lamp (DRL)Relay, Left and Right Low Beam inDRL Mode, DRL Resistor |
| IGN 0 (ENG) | Powertrain Control Module (PCM) |
| SPARE | Not Used |
| ABS | Anti-Lock Brake System(ABS)/Traction Control System |
| IGN-1 | Rear Ignition-1 Relay, Fog LampRelay (DeVille Concours Only),Controlled Power Backup Relay,DRL Relay, Ignition Switch inSteering Column, Injectors,ECS Fuse, PCM Fuse, DIS Fuse,Injector Fuses |
| WIPERS | Accessory Relay, Wiper Switch |
| A/C COMP | AC Compressor Relay, Cooling FanRelays 1, 2, 3, Compressor Clutch |
| PCM (BAT) | Powertrain Control Module (PCM) |
| PARK/REV | Reverse Relay, Right and LeftBack-Up Lamps, ElectrochromicMirror (in Header), Park Relay,Brake Transaxle-Shift Interlock(BTSI) Switch, BTSI |
| ECS | Transaxle Shift Solenoids, MassAirflow, Canister Purge, PCM,Linear Exhaust Gas Recirculation(EGR), Front Ignition-1 Relay |
| PCM (IGN) | Powertrain Control Module (PCM) |
| DIS | Electronic Ignition Control Module |
| CRUISE | Stepper Motor Cruise Control,Power Steering Pressure Switch,Low Refrigerant Pressure CutoffSwitch, Park Relay |
| INJ | Injectors 1, 4, 6, 7 |
| INJ | Injectors 2, 3, 5, 8 |
| FUEL PUMP | PCM, Fuel Pump Relay, Fuel Pump |
| OXY SEN1 | Oxygen Sensor Front |
| OXY SEN2 | Oxygen Sensor Rear,Catalytic Converter (CAT)Rear Oxygen Sensor |
Rear Compartment Fuse Block
This fuse block is located on the front wall of the trunk(behind the rear seat) on the driver’s side. Loosen thefour trunk trim fasteners and pull the trim away from thefuse block to gain access.
| Fuse | Usage |
| RLY IGN1 | Cluster, Cruise in Stalk,Passenger Zone Module (PZM),Traction Control (TCC) Switches |
| SIR | Sensing and Diagnostic Module(SDM), Right and Left SideImpact Sensing Modules |
| ELC | Electronic Level Control (ELC)Relay, ELC Sensor(DeVille Only), ELC Compressor |
| TURN | Electronic Flasher,Turn/Hazard Switch |
| CONSOLE | Rear Zone Blower, Right andLeft Heated Seat Switches(Optional), Cellular PhoneHandset (Optional) |
| SPARE | Not Used |
| SPARE | Not Used |
| RSS | Road Sensing Suspension (RSS)(DeVille Concours Only) |
| IGN 0-BODY | PRNDL Indicator (DeVilleConcours Only), PZM, Cluster,Air Control Module (ACM),Upper Zone Motor, Lower ZoneMotor (Optional), HVACSolenoids, Climate Control PanelAnalog Cluster (Console ShiftOnly), Rear Defog Relay, ELCRelay (DeVille Concours Only),Dual Zone Switch (DeVille andDeVille d’Elegance Only) |
| COMFORT | CD Player, Remote Keyless Entry(RKE), Controlled Power Relay,Air Control Module (ACM), PZM |
| AMP | Active Audio Amplifier (Optional) |
| PZM | Passenger Zone Module (PZM) |
| RADIO/PHONE | Radio Receiver, Phone, DABRelay, Trunk Release Relay,Fuel Door Release Relay,High/Low Beam Relay |
| CLUSTER | Steering Wheel Controls, Cluster |
| ACC | PZM, Electrochromic Mirror,Rain Sensor (Optional),Accessory Relay |
| HTD BACKLT | Rear Window Defog |
| HTD MIR | Right and Left HeatedOutside Mirrors |
| HTD SEAT R | Passenger Heated SeatRelay (Optional) |
| HTD SEAT L | Driver Heated SeatRelay (Optional) |
| PULL DOWN | Trunk Pull-Down Motor |
| HDLP WASH | Headlamp Washer |
| ANTENNA | Power Mast Antenna |
| RSS | Road Sensing Suspension Module(DeVille Concours Only),Damper Relay(DeVille Concours Only) |
| CONVENC | Trunk Release Relay, TrunkRelease Solenoid, Fuel DoorRelease Relay, Fuel Filler DoorRelease Solenoid, Door LockRelay, Left Front Door Motors,PZM, Door Unlock Relay |
| BATT | Driver and Passenger Seat LumbarSwitch (Optional), Memory SeatModule (Optional) |
| RSS | Road Sensing Suspension(DeVille Concours Only) |
| RT PARK | Headlamp Switch, RightTurn/Stop/Tail Lamps, Right Frontand Rear Sidemarker Lamps,Right Front Park/Turn Lamps,License Plate Lamp,Hazard/Position Lamp Cut-OutRelay (Export) |
| LT PARK | Left Turn/Stop/Tail Lamps,Left Front and Rear SidemarkerLamps, Hazard/Position LampCut-Out Relay (Export),Left Front Park/Turn Lamps,Underhood Lamp,Trailer (Optional) |
WARNING:Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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