The Cadillac Seville from 1993 was a luxury sedan known for its comfort, style, and advanced features during its time. Its electrical system, which includes the fuse box and relay components, played a critical role in ensuring its functionality.
The fuse box in the Cadillac Seville 1993 housed various fuses, each designed to protect specific electrical circuits throughout the vehicle. These circuits powered essential components such as the engine control module, lighting systems, climate control, infotainment features, and more. Fuses were crucial as they would break the circuit in case of an electrical overload or short circuit, preventing damage to associated systems.
Relays in the Cadillac Seville acted as electrically operated switches that controlled high-current circuits. They facilitated the precise activation and deactivation of functions like the starter motor, fuel pump, air conditioning compressor, and power windows or seats. Efficient power management through relays ensured that each component received the necessary voltage for optimal performance.
Regular inspection and maintenance of the fuse box and relays were essential to ensure the Cadillac Seville 1993 operated smoothly. This involved checking fuses for signs of wear or damage, ensuring relay connections were secure, and promptly addressing any electrical issues that arose. Proper care of these components helped maintain the vehicle’s electrical integrity, enhancing safety and driving satisfaction in the Cadillac Seville 1993.
MUST READ: DYI – How to Check Car Fuses?
(1993) Cadillac Seville fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Cadillac Seville 1993 fuse assignment
- Cigar lighter / power outlet fuses in the Cadillac Seville are the fuse №. 23 in the Engine compartment fuse box and fuses №. 58 and 65 in the Rear Underseat fuse box.
Year of production: 1993
Engine compartment fuse block
| Fuse name | Ampere rating | Usage |
| COIL | 20A | 4.9L DISTRIBUTOR, 4.6L IGNtTION CONTROL MODULE |
| SIR | 20A | DIAGNOSTIC ENERGY RESERVE MODULE (DERM) SIR (AIR BAG), ARMING SENSOR |
| PCM (IGN) | 10A | POWERTRAIN CONTROL MODULE (PCM), PASSKey DECODER MODULE |
| INJ | 10A | FUEL INJECTORS 1, 4, 6, 7 |
| INJ | 10A | FUEL INJECTORS 2, 3, 5, 8 |
| IGN | 10A | A/C COMPRESSOR, ELECTROCHROMIC MIRROR, INSTRUMENT PANEL CLUSTER, DIAGNOSTIC ENERGY RESERVE MODULE (DERM) SIR (AIR BAG), KEYLESS ENTRY MODULE, CORNERING LIGHTS, CHIME MODULE, TWILIGHT SENTINEUDRL MODULE, BACKUP LIGHTS, BRAKE TRANSMISSION SHIFT INTERLOCK |
| FUEL | 20A | FUEL PUMP, POWERTRAIN CONTROL MODULE |
| PCM (BAT) | 10A | POWERTRAIN CONTROL MODULE (PCM) |
| A/C | 10A | A/C COMPRESSOR |
| HTD W/S | 10A | HEATED WINDSHIELD |
| STOP LP | 20A | STOP LIGHTS |
| TURN/HAZ | 20A | HAZARD LIGHTS, TURN SIGNAL LIGHTS |
| DRL (CANADA) | 10A | DAYTIME RUNNING LIGHTS |
| DRL (CANADA) | 10A | DAYTIME RUNNING LIGHTS |
| SUSPENSION | 10A | ROAD SENSING SUSPENSION (NORTHSTAR), ROAD SENSING SUSPENSION (4.9L) |
| RTD (BAT) | 20A | ROAD SENSING SUSPENSION |
| L HDLP LO (EXPORT) | 10A | LEFT HEADIAMP LOW BEAM |
| R HDLP LO (EXPORT) | 10A | RT HEADIAMP LOW BEAM |
| L HDLP HI (EXPORT) | 10A | LEFT HEADIAMP HIGH BEAM |
| R HDLP HI (EXPORT) | 10A | RIGHT HEADIAMP HIGH BEAM |
| IGN 3 | 10A | HEATED WINDSHIELD, HEATER AND A/C PROGRAMMER, ELECT. LEVEL CONTROL (ELC), DEFOGGER RELAY “D”, CRUISE CONTROL, POWERTRAIN CONTROL MODULE |
| COOLING FAN | 10A | COOLING FANS, POWERTRAIN CONTROL MODULE 4.6L), FRONT AND REAR HEATED OXYGEN SENSOR (4.6L) |
| TRANS/ECS | 10A | EXHAUST GAS RECIRCULATION (EGR), POWERTRAIN CONTROL MODULE (PCM), AUTOMATIC TRANSAXLE, EVAPORATIVE EMISSION CONTROL SOLENOID, OVERSPEED ALERT MODULE (EXPORT), POWER STEERING PRESSURE SWITCH |
Maxi Fuse block
LH MAXI FUSE BLOCK
| Fuse name | Ampere rating [A] | Usage |
| FUSE 1 | 50A | RETAINED ACCESSORY POWER (RADIO/WIPERS), STARTER, TRUNK COMR FUSE A11, ENGINE COME FUSES A1, A3, A5, A7, A9, A11, A13 |
| FUSE 2 (U(.S.A./CANADA Z49/SAUDI) | 60A | TRUNK COMP FUSES C1, C3, C5, C7, C9, C11, ROAD SENSING SUSPENSION |
| FUSE 2 EXPORT EXCEPT SAUDI | 60A | ROAD SENSING SUSPENSION, REAR FOG LIGHT (EXPORT), TRUNK COMP FUSES C1, C3, C5, C7, C9, C11, C13 |
| CIRCUIT BREAKER 3 | 30A | FUEL DOOR RELEASE, TRUNK RELEASE, LEFT AND RIGHT POWER SEAT, LEFT AND RIGHT LUMBAR CONTROL, KEYLESS ENTRY MODULE, POWER DOOR LOCKS, HORNS |
| FUSE 4 | 30A | POWERTRAIN CONTROL MODULE (PCM), ELECTRONIC CLIMATE CONTROL, RAP/ILLUMINATED ENTRY MODULE, INSTRUMENT PANEL CLUSTER, PASSKey DECODER MODULE, THEFT DETERRENT |
| FUSE 5 | 60A | LEFT AND RIGHT HEATED SEATS, ELECTRONIC LEVEL CONTROL (ELC), TRUNK LID PULL DOWN, POWER ANTENNA, REAR DEFOGGER, LEFT AND RIGHT MIRROR DEFOGGERS |
| FUSE 6 | 60A | RETAINED ACCESSORY POWER (SUNROOFtPOWER WINDOWS), ENGINE COW FUSES C7, D1, D3, D5, TRUNK COW FUSES A1, A3, A5, A7 |
RH MAXI FUSE BLOCK
| Fuse name | Ampere rating [A] | Usage |
| FUSE 1 | 40A | TURN/HAZ STOP LP, PARK LIGHTS |
| FUSE 2 | 30A | DELCO-BOSE SPEAKERS, RADIO CONTROL HEAD, REMOTE RADIO RECEIVER |
| CIRCUIT BREAKER 3 | 30A | FLASH TO PASS FEATURE, DAYTIME RUNNING LIGHT (DRL), HEADLIGHTS |
| FUSE 4 – HVAC BLOWER | 30A | HVAC POWER MODULE, A/C COMPRESSOR |
| FUSE 5 – ABS | 50A | ANTILOCK BRAKE PRESSURE VALVE |
| FUSE 6 – COOLING FANS | 50A | COOLING FANS |
Rear Compartment Fuse Block
| Fuse name | Ampere rating [A] | Usage |
| CRANK | 10A | RAP/ILLUMINATED ENTRY MODULE, DIAGNOSTIC ENERGY RESERVE MODULE (DERM), STARTER |
| IGN 1 | 10A | CATALYTIC CONVERTER ALARM MODULE (EXPORT), FUEL LEVEL SENSOR, ELECTROCHROMIC MIRROR, THEFT DETERRENT MODULE, KEYLESS ENTRY MODULE, TURN SIGNAL LIGHTS, RAP/ILLUMINATED ENTRY MODULE |
| HDLP WASH (EXPORT) | 30A | HEAD LIGHT WASHER MODULE |
| IPC (IGN) | 10A | INSTRUMENT PANEL CLUSTER |
| CNSL SW | 10A | REAR BLOWER MOTOR, CONSOLE SWITCH |
| ABS | 10A | ELECTRONIC BRAKE CONTROL MODULE (4.9L), ELECTRONIC BRAKE AND TRACTION CONTROL MODULE (NORTHSTAR) |
| WIPER | 30A | WIPERWASHER SWITCH |
| RAD (IGN) | 10A | REMOTE RADIO RECEIVER |
| R DEFOG | 30A | REAR DEFOGGER |
| HTD MIRR | 10A | RIGHT AND LEFT POWER MIRROR-DEFOGGER |
| IPC (BATT) | 10A | INSTRUMENT PANEL CLUSTER |
| THEFT | 10A | PASS-key DECODER MODULE, THEFT DETERRENT RELAY, THEFT DETERRENT MODULE |
| HVAC/DABI | 10A | HEATER AND NC PROGRAMMER, RAP/ILLUMINATED ENTRY MODULE |
| REAR FOG (EXPORT) | 10A | REAR FOG LIGHTS |
| FOG LP (4.6L) | 10A | FOG LIGHTS |
| CNSL FAN | 10A | REAR BLOWER MOTOR |
| CIGAR | 20A | REAR CIGAR LIGHTERS, FRONT CIGAR LIGHTER, CHIME MODULE |
| BODY 2 | 10A | POWER MIRROR SWITCH, RETAINED ACCESSORY POWER, TRUNK LIGHT, CONSOLE SWITCH, PANEL LIGHTS INHIBIT (EXPORT), COURTESY LIGHTS, KEYLESS ENTRY MODULE |
| BODY 1 | 10A | POWER DOOR LOCKS, DOOR LOCK CYLINDER ILLUMINATION, GLOVE BOX LIGHT, FOOTWELL LIGHTS, TWILIGHT SENTINEL/DRL MODULE, HEADLIGHT SWITCH |
| READ LP | 10A | LEFT AND RIGHT VANITY MIRRORS, GARAGE DOOR OPENER, FRONT AND REAR HEADER LIGHTS |
| L PRK LP | 10A | RADIO DIMMING, HEADLIGHT SWITCH, INSTRUMENT PANEL CLUSTER, LEFT TAIL/STOP/TURN LIGHTS, LEFT MARKER LIGHT, LEFT PARK/TURN LIGHT |
| R PRK LP | 10A | RIGHT MARKER LIGHTS – LICENSE LIGHTS, RIGHT PARK/TURN LIGHT, ENGINE COMPARTMENT LIGHT, RIGHT TAIL/STOP/TURN LIGHTS |
| RAD (BAT) | 10A | REMOTE RADIO RECEIVER, RADIO CONTROL HEAD |
| ANT/TRUNK | 20A | TRUNK PULL DOWN, POWER ANTENNA |
| ELC | 20A | ELECTRONIC LEVEL CONTROL |
| R HTD SEAT | 10A | PASSENGERS HEATED SEAT |
| L HTD SEAT | 10A | DRIVERS HEATED SEAT |
Conclusion
For owners and enthusiasts of classic Cadillac Seville 1993, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Cadillac’s craftsmanship and innovation in the automotive industry during that era.