Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2005OPTRA5 BASE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALBODY ELECTRICALWIRING SYSTEMS - COMPONENT LOCATOR AND CONNECTOR END VIEWSELECTRICAL CENTER IDENTIFICATION VIEWS
2005 Chevrolet Optra5 Base, Standard
Electrical Center Identification Views
2005 Chevrolet Optra5 Base, StandardSECTION Electrical Center Identification Views
Fuse Block - Underhood Label Usage
| No. | Device | Rating | Description |
|---|---|---|---|
| EF1 | BATT PWR Fuse | 30A | Battery Main, F13-F16, F21-F24 |
| EF2 | ABS Fuse | 60A | EBCM, Oil Feeding Connector |
| EF3 | HVAC BLWR Fuse | 30A | Blower Relay |
| EF4 | IGN 2 Fuse | 30A | Ignition Switch - 2 |
| EF5 | IGN 1 Fuse | 30A | Ignition Switch - 1 |
| EF6 | COOL FAN LOW Fuse | 20A | Cooling Fan Low Relay |
| EF7 | DEFOG Fuse | 30A | Defog Relay |
| EF8 | COOL FAN HI Fuse | 30A | Cooling Fan HI Relay |
| EF9 | PWR WINDOW Fuse | 20A | Power Window Switch |
| EF10 | IGN COIL Fuse | 15A | Fuel Connector, ECM, MR-140, LEGR, EI System |
| EF11 | ECM Fuse | 10A | ECM, Main Relay, Sirius D4 |
| EF12 | HEADLAMPS Fuse | 25A | Headlamp, ILLUM Relay |
| EF13 | STOP LAMPS Fuse | 15A | Brake Switch |
| EF14 | DRIVER'S PWR WNOW Fuse | 20A | Power Window Switch |
| EF15 | HI BEAM Fuse | 15A | Headlamp HI |
| EF16 | HORN Fuse | 15A | Horn Relay, Siren, Hood Contact Switch |
| EF17 | A/C Fuse | 10A | A/C Comp Relay |
| EF18 | FUEL PUMP Fuse | 15A | Fuel Pump |
| EF19 | IP FUSE BLOCK Fuse | 15A | Cluster, Key Remind S/W, Folding Mirror Unit, MAP Lamp, Room Lamp, Trunk Open Lamp, Trunk Open Switch |
| EF20 | LOW BEAM LT Fuse | 10A | Headlamp LO |
| EF21 | ENG SNSR Fuse | 15A | EVAP Canister Purge Solenoid, HO2S, Cooling Fan Relay |
| EF22 | INJECTOR Fuse | 15A | Injector, EGR, EEGR |
| EF23 | ILLUM LT Fuse | 10A | License Plate Lamp, Chime Bell, Tail Lamp, Headlamp |
| EF24 | FRT FOG Fuse | 15A | Fog Lamp Relay |
| EF25 | MIR HTD Fuse | 10A | Electric OSRV Mirror |
| EF26 | DR/LCK Fuse | 15A | Central Door Lock Unit |
| EF27 | LOW BEAM RT Fuse | 10A | Headlamp LO |
| EF28 | ILLUM RT Fuse | 10A | ILLUM Circuit, Headlamp, Tail Lamp |
| EF29 | SPARE | 10A | Not Used |
| EF30 | SPARE | 15A | Not Used |
| EF31 | SPARE | 25A | Not Used |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.