The Chevrolet Epica (2000-2006) is a mid-size sedan known for its smooth ride and affordability. The electrical system in the Epica relies on a network of fuses and relays to control and protect the vehicle’s various electrical components.
The fuse box in the Chevrolet Epica is typically located in the engine compartment and inside the cabin. The engine compartment fuse box safeguards high-power systems like the engine control unit, cooling fans, and headlights. The interior fuse box controls lower-power functions such as the radio, power windows, and interior lighting. Each fuse is responsible for cutting off the electrical flow in the event of an overload or short circuit, protecting the system from damage.
Relays in the Epica serve as switches for high-current systems, including the fuel pump, starter motor, and air conditioning system. These relays allow low-current circuits to control high-power components safely. Regular maintenance of fuses and relays is essential to ensure the reliable operation of the vehicle’s electrical systems and to prevent issues that could compromise performance or safety.
MUST READ: DYI – How to Check Car Fuses?
(2000-2006) Chevrolet Epica 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 Epica 2000-2006 fuse assignment
- Cigar lighter (power outlet) fuses in the Chevrolet Epica are located in the Instrument panel fuse box (see fuses “LTR” (Cigarette Lighter) and “HTD/SEAT” (Heating Mat, Accessory Power Outlet)).
Year of production: from 2000, 2001, 2002, 2003, 2004, 2005, 2006
Instrument Panel Fuse Box
Fuse Box Location
It is located on the driver’s side of the instrument panel, behind the cover.
Fuse box diagram (2001-2004)
Assignment of the fuses and relay in the Instrument Panel (2001-2004)
| Name | Usage |
|---|---|
| BLANK | Not Used |
| BLANK | Not Used |
| BLANK | Not Used |
| ECM | Engine Main Relay, Fuel Pump Relay, Engine Control Module (ECM) |
| BCK/UP CRUISE | Back-Up Lamp Switch, Cruise Control |
| ABS | Electronic Brake Control Module (EBCM), A/D Converter |
| AUTO A/C BCM | Automatic Temperature Control, A/C Compressor Relay, Body Control Module (BCM) |
| HVAC EPS | Manual Air Conditioning, Electronic Power Steering (EPS), HVAC EPS |
| AIRBAG | Sensing and Diagnostic Module (SDM) |
| BLANK | Not Used |
| TCM BTSI | Transmission Control Module (TCM), Brake Transmission Shift-Interlock/Automatic Transaxle Shift-Lock (BTSI) |
| BCM ABS | Body Control Module (BCM), Antilock Brake System (ABS) |
| CLSTR AUTO A/C | Instrument Panel Cluster, Automatic Temperature Control. Daytime Running Lamps (DRL) |
| LTR | Cigarette Lighter, Glove Box Lamp |
| RADIO | Radio |
| CLK | Clock, Dome Lamp, Key Interlock Unit |
| WSWA | Windshield Washer |
| WPR | Wiper |
| HTD/MIR | Outside Rearview Mirror (OSRVM), Rear Glass Defogger Switch |
| RADIO CRUISE | Radio Battery Positive Voltage, Cruise |
| HTD/SEAT | Heating Mat, Accessory Power Outlet |
| AUTO A/C CLSTR | Automatic Temperature Control, Cluster |
| DLC | Data Link Connector (DLC) |
Fuse box diagram (2005-2006)
Assignment of the fuses and relay in the Instrument Panel (2005-2006)
| Name | Usage |
|---|---|
| SPARE | Spare |
| SPARE | Spare |
| FUSE PLR | Fuse Puller |
| ECM | Engine Main Relay : Fuel Pump Relay, Engine Control Module (ECM) |
| BCK/UP CRUISE | Back-Up Lamp Switch, Cruise Control |
| TPMS | Tire Pressure Monitor System (Option) |
| AUTO A/C BCM | Automatic Temperature Control, A/C Compressor Relay, Body Control Module (BCM) |
| HVAC EPS | Manual Air Conditioning, Electronic Power Steering (EPS) (Option) |
| AIRBAG | Sensing and Diagnostic Module (SDM) (Option) |
| ABS | Anti-lock Brake System (Option) |
| TCM BTSI | Transmission Control Module (TCM), Brake Transmission Shift-Interlock/Automatic Transaxle Shift-Lock (BTSI) |
| BCM ABS | Body Control Module (BCM), Antilock Brake System (ABS) |
| CLSTR AUTO A/C | Instrument Panel Cluster, Automatic Temperature Control, Daytime Running Lamps (DRL) |
| LTR | Cigarette Lighter, Glove Box Lamp |
| RADIO | Radio |
| CLK | Clock, Dome Lamp, Key Interlock Unit |
| WSWA | Windshield Washer |
| WPR | Windshield Wiper |
| HTD/MIR | Outside Rearview Mirror (OSRVM), Rear Glass Defogger Switch |
| RADIO CRUISE | Radio Battery Positive Voltage, Cruise |
| HTD/SEAT | Heating Mat. Accessory Power Outlet |
| AUTO A/C CLSTR | Automatic Temperature Control, Cluster |
| DLC | Data Link Connector (DLC) |
Engine Compartment Fuse Box
Fuse Box Location
It is located in the engine compartment, under the cover.
Fuse box diagram
Assignment of the fuses and relay in the Engine Compartment
| Name | Usage |
|---|---|
| BLANK | Not Used |
| LOW BEAM RT | Right Side Headlamp Low Beam |
| LOW BEAM LT | Left Side Headlamp Low Beam |
| INT LTS | Interior Lamp |
| A/C | Air Conditioning |
| HI BEAM PASSING | Headlamp Passing Light |
| HI BEAM | Headlamp High Beam |
| FUEL | Fuel Pump, Data Link Connector (DLC) |
| ECM | Ignition Coil |
| COOL FAN HI | Electric Cooling Fan High Speed |
| BCM BATT | Body Control Module (BCM) |
| IGN 1 | Ignition Key (ACC : ON : START) |
| FOG LAMPS | Fog Lamp Relay |
| STOP LAMPS | Brake Switch |
| I/P FUSE BATT | Instrument Panel Fuse Box |
| ILLUM RT | Illumination, Right Parking Lamp |
| FRT DEFOG | Front Defogger |
| ILLUM LT | Left Parking Lamp |
| HVAC BLWR | Blower Motor |
| IGN 2 | Ignition Key (ON. START) |
| FOG DIODE | Fog Lamp Relay |
| HORN | Horn |
| PWR/MIR | Power Mirror |
| DRL | Daytime Running Lamps |
| ENG 2 | Injector Variable Induction System (VIS) : Electronic Exhaust Gas Recirculation (EEGR), Canister Purge Solenoid |
| ENG 1 | Oxygen Sensor. Generator. Engine Control Module (ECM) |
| COOL FAN LOW | Electric Cooling Fan Low Speed |
| ABS | Electronic Brake Control Module (EBCM) |
| PWR/SEAT | Front Power Seat |
| S/ROOF | Sunroof |
| ECM 1 | Engine Control Module (ECM), Transmission Control Module (TCM), Engine Main Relay |
| SPARE | Spare |
| SPARE | Spare |
| SPARE | Spare |
| SPARE | Spare |
| SPARE | Spare |
| PWR WNDW | Power Window |
| FUSE PLR | Fuse Puller |
| COOL FAN HI | Electric Cooling Fan High Speed |
| A/C CMPRSR | Air Conditioning Compressor |
| HEAD LAMP | Headlamp |
| COOL FAN CNTRL | Electric Cooling Fan Control |
| FRT FOG | Front Fog Lamp |
| HORN | Horn |
| Relays: | |
| ILLUM LAMPS | Taillamp |
| FUEL PUMP | Fuel Pump |
| COOL FAN LOW | Electric Cooling Fan Low Speed |
| PWR WNDW | Power Window |
| ENG MAIN | Engine Control Module (ECM), Ignition Coil |
Conclusion
For owners and enthusiasts of classic Chevrolet Epica 2000-2006, 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.
