Chevrolet Corvette (C4/ZR1) 1993-1996 fuse box and relay Diagrams
The Chevrolet Corvette C4/ZR1 (1993-1996) is an iconic performance car known for its powerful engine and advanced technology for its time. Its electrical system is crucial for managing both essential and luxury features, safeguarded by fuses and relays.
The fuse box in the C4/ZR1 is located in the engine compartment and controls high-power systems like the engine control unit, headlights, and cooling fans. There’s also a fuse box inside the passenger compartment that manages lower-power systems such as the radio, power windows, and interior lights. Fuses protect these circuits by breaking the connection if there’s an overload, preventing damage.
Relays in the Corvette C4/ZR1 act as electrical switches for systems requiring higher current, such as the fuel pump, starter motor, and cooling fans. These relays allow the vehicle to control these systems efficiently and safely without overloading lower-power circuits. Regular checks on fuses and relays are essential to ensure the reliable performance of both critical and comfort-oriented electrical systems in this classic sports car.
MUST READ: DYI – How to Check Car Fuses?
(1993-1996) Chevrolet Corvette (C4/ZR1) 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.
Chevrolet Corvette (C4/ZR1) 1993-1996 fuse assignment
- Cigar lighter (power outlet) fuse in the Chevrolet Corvette is the fuse #44 in the Instrument panel fuse box.
Year of production: from 1993, 1994, 1995, 1996
Instrument Panel Fuse Box
Fuse Box Location
The fuse panel is located on the right side of the instrument panel (turn the knob and pull the door to access).
Fuse box diagram
Assignment of the fuses in the instrument panel
| № | Description |
|---|---|
| 1 | 1993: Not Used; 1994-1996: Heater, A/C Programmer |
| 2 | 1993-1994: Not Used; 1995-1996: Brake-Transmission Shift Interlock |
| 3 | Windshield Wiper/Washer Switch Assembly |
| 4 | Radio Receiver (Ignition) |
| 5 | 1993-1994: Heated Mirrors;
1995-1996: Heated Mirrors, Heater and A/C Control Head, Heater and A/C Programmer |
| 6 | 1993-1994: Taillight, Daytime Running Lights Module; 1995-1996: Light Switch, Daytime Running Lamps Module |
| 7 | Horn Relay |
| 8 | Hazard Flashers, Brake Switch |
| 9 | Crank-Air Bag |
| 10 | Crank-Park/Neutral Switch (Automatic), Clutch Switch (Manual) |
| 11 | RH Illumination |
| 12 | LH Illumination |
| 13 | Console Illumination |
| 14 | Fuel Pump 1 |
| 15 | 1993-1995: Fuel Pump 2 (LT5); 1996: Automatic Transmission |
| 16 | Central Control Module, Daytime Running Lamps Module |
| 17 | 1993-1995: Generator; Automatic Transmission Vacuum Pump (LT5), Valet Mode (LT5), EGR Circuit (LT5), Oxygen Sensors (LT5); 1996: Generator |
| 18 | A/C Compressor Clutch, Healer and A/C Control Head, Heater and A/C Programmer, Rear Defog Relay (1994-1996) |
| 19 | Accessory Plug |
| 20 | 1993: A/C Programmer; 1994-1996: Heated Oxygen Sensors (LT1) |
| 21 | 1993-1994: Fuel Pump Relay Coil #2 (LT5), Selective Ride Control Module, ABS Module, Transmission Clutch Control Switch (Automatic), Air Pump Relay, Diverter Valve, Secondary Bypass Valve (LT5);
1995: Fuel Pump Relay #2 (LT5), Selective Ride Control Module, ABS Module, Brake Switch (Automatic), Air Pump Relay, Air Bypass Valve (LT5); 1996: Real Time Damping Module, ABS Module, HVAC Solenoid Assembly |
| 22 | 1993-1994: Injectors #1,4,6,7 (LT1), Primary Injectors #1-8 (LT5), Ignition Coil Module (LT5), Ignition Coil Plate Connector (LT5);
1995: Injectors #1, 4, 6, 7 (LT1), Primary Injectors #1-8 (LT5), Ignition Coil (LT5); 1996: Injectors #1, 4, 6, 7 |
| 23 | 1993: Injectors #2, 3, 5, 8 (LT1), Secondary Injector Relays #1, 2 (LT5); 1994: Injectors #2, 3, 5, 8 (LT1), Secondary Injector Relays (#1, 2 (LT5), Secondary SF1 Control Modules (LT5); 1995: Injectors #2, 3, 5, 8 (LT1), Secondary SF1 Control Modules (LT5); 1996: Injectors #2, 3, 5, 8 |
| 24 | Turn Signal Flashers |
| 25 | Ignition Coil and Ignition Coil Module |
| 26 | Passive Keyless Entry Module |
| 27 | Instrument Cluster, Driver Information Center, Air Bag System, Acceleration Slip Regulation Switch (LT5) |
| 28 | Back-up Lamps Switch, Transmission Position Switch, One to Four Shift Solenoid |
| 29 | 1993-1994: Primary Cooling Fan Relay Coil, Secondary Cooling Fan Relay Coil;
1995-1996: Cooling Fan Relay Coil #1, 2, 3 |
| 30 | 1993: Secondary Butterfly Relay (LT5), Direct Ignition Module, Camshaft Sensor, Traction Buffer, Cannister Purge Solenoid, Exhaust Gas Recirculation Control (LT1), Gear Relay (Manual);
1994: Direct Ignition Module, Camshaft Sensor, Canister Purge Solenoid, Throttle Position Sensor Buffer Module, EGR Circuit (LT1), Secondary Air Inlet Solenoid (LT5), Electronic Ignition Control Module (LT5), One to Four Shift Relay; 1995: Camshaft Sensor (LT5), Canister Purge Solenoid; Throttle Position Sensor Buffer Module (LT5), EGR Circuit (LT1), Secondary Air Inlet Solenoid (LT5); Ignition Control Module (LT5), HVAC Solenoid Assembly, Mass Airflow Sensor (LT1), One to Four Shift Relay; 1996: Canister Purge Solenoid, EGR Circuit (LT1), Mass Airflow Sensor, One to Four Shift Relay, Brake Switch (Automatic), Air Pump Relay |
| 31 | Power Mirror Adjuster Control, Lighted Rearview Mirror, Visor Vanity Mirrors |
| 32 | Cruise Control Engage Switch, Daytime Running Lamps Module, Low Tire Pressure Warning Module, Cruise Control Cut-off Relay |
| 33 | Engine Control Module |
| 34 | Air Bag System |
| 35 | Central Control Module |
| 36 | Dome Lamp Relay (1993), Footwell Courtesy Lamps, Door Courtesy Lamps, Glove Compartment Lamps, Lighted Rearview Mirror |
| 37 | Bose Amplifier Relay, Power Antenna Relay, Cargo Compartment Lamps |
| 38 | LCD (1993, 1994), Instrument Cluster, Tone Generator, Dome Lamp Relay (1994-1996) |
| 39 | Central Control Module |
| 40 | Radio Receiver (Battery), Radio Control Head, Passive Keyless Entry Module |
| 41 | 1993: Not Used; 1994-1996: Sport Seats |
| 42 | 1993: Power Door Lock Switches;
1994-1996: Power Door Lock Switches, Driver Information Center, Passive Keyless Entry Module |
| 43 | Heater and A/C Programmer |
| 44 | Cigarette Lighter, Accessory Plug |
| 45 | Hatch or Deck Lid Release Relay |
| Circuit Breakers | |
| K | Power Seals |
| L | Not Used |
| M | Power Windows |
| N | Not Used |
| P | Not Used |
Engine Compartment Fuse Box
Fuse Box Location
There are two maxi-fuse blocks in the engine compartment. One is part of the forward lamp wiring harness, and the other is part of the ECM-engine wiring harness.
Fuse box diagram
Assignment of the fuses in the engine compartment
| № | Description |
|---|---|
| 1 | Interior Lighting |
| 2 | Primary Cooling Fan |
| 3 | LH Headlamp Motor |
| 4 | RH Headlamp Motor |
| 5 | Secondary Cooling Fan |
| 6 | Exterior Lighting |
| 7 | Power Accessory (Power Locks, Hatch, Lighter, Seats) |
| 8 | Air Pump |
| 9 | Engine Conirol Module |
| 10 | Fuel Pump |
| 11 | Anti-Lock Brakes (ABS), Acceleration Slip Regulation System |
| 12 | A/C Blower |
| 13 | Rear Defogger |
| 14 | Ignition |
| 15 | Ignition |
| 16 | Brake Hydraulics |
Underhood Lamps Fuse
The fuse is under the hood on the driver’s sidemarker lamp assembly. If you need to keep the hood open for an extended period of time, remove the fuse.
Ride Control Fuse
Vehicles equipped with the optional Real-Time Damping ride control system are protected with a fuse located in the ABS compartment behind the driver’s seat. To access this fuse, pull back the carpet, remove the screw and lift the cover.
Conclusion
For owners and enthusiasts of classic Chevrolet Corvette (C4/ZR1) 1993-1996, 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 Chevrolet’s craftsmanship and innovation in the automotive industry during that era.