Table of Contents
The i20 is a supermini hatchback produced by Hyundai since 2008. Debuting at the Paris Motor Show in October 2008, it is positioned between the i10 and i30 models. In this article, we provide a detailed overview of the fuse box diagrams for the Hyundai i20 (1st and 2nd generations; PB/GB chassis codes) covering model years 2008–2021.
Below you will find location diagrams and photos of the power distribution centers. Fuses for the "Cigarette Lighter" and "Fuel Pump" are highlighted in bold text.
Engine Compartment Fuse Box
Location of underhood power distribution modules.
Main Fuse Box
Located on the left side of the engine compartment, adjacent to the battery.
Type 1
General layout.
| Diagram | |
|---|---|
|
|
| Designation | Circuit Protected / Component |
| BATT 2 | Instrument panel junction box (power window relay, fuses: SAFETY P/W - 15 A, HAZARD - 15 A) |
| BATT 1 | Instrument panel junction box (tail lamp relays, fuses: S/ROOF - 20 A, FOLDING - 10 A, DR LOCK - 20 A, STOP LP - 15 A, V/A HORN - 15 A, RR FOG LP - 10 A, FRT FOG LP - 10 A, power connector: ROOM - 10 A, AUDIO - 20 A) |
| C / FAN | High-speed radiator fan relay, low-speed radiator fan relay |
| MAIN | Alternator, fuses: ABS 1 - 40 A, ABS 2 - 40 A, RR HTD - 40 A, BLOWER - 40 A, MDPS - 80 A, A/CON 1 - 10 A |
| ABS2 | Data link connector (DLC), anti-lock braking system (ABS) module, electronic stability control (ESC) module |
| ABS 1 | Data link connector (DLC), anti-lock braking system (ABS) module, electronic stability control (ESC) module |
| RR HTD | Rear window defroster relay |
| BLOWER | Blower motor relay |
| MDPS | Motor-driven power steering (MDPS) control module / Electronic stability control (ESC) module |
| IGN 2 | Ignition switch |
| ECU A | Engine control module (ECM) (MT), powertrain control module (PCM) (AT), engine main relay |
| F / PUMP | Hyundai i20 fuel pump fuse |
| IGN 1 | Ignition switch |
| HORN | Horn relay |
| SNSR 1 | Camshaft position (CMP) sensor, EVAP canister purge control solenoid valve, oxygen sensors (upstream & downstream), immobilizer control unit, low-speed radiator fan relay, high-speed radiator fan relay |
| ECU B | Engine control module (ECM) (MT), powertrain control module (PCM) (AT) |
| DRL | Body control module (BCM) ground |
| ECU 1 | Engine control module (ECM) (MT), powertrain control module (PCM) (AT) |
| INJ | Fuel injectors 1–4, idle air control (IAC) actuator, A/C compressor relay, oil control valve (OCV - Gamma engine) |
| A / CON2 | Climate control module |
| A / CON 1 | A/C compressor relay |
Type 2
General layout.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit Protected / Component | Rating (A) |
| 1 | Not used | — |
| 2 | Not used | — |
| 3 | Ignition switch | 50 |
| 4 | Engine main relay | 30 |
| 5 | Fuel filter heater relay | 30 |
| 6 | Ignition switch | 40 |
| 7 | Horn relay | 10 |
| 8 | Not used | — |
| 9 | Not used | — |
| 10 | Oxygen sensor, brake lamp switch, PTC heater, low-speed radiator fan relay, high-speed radiator fan relay | 10 |
| 11 | Not used | — |
| 12 | Ground | 10 |
| 13 | Fuel pressure regulator | 10 |
| 14 | Engine control module (ECM) | 20 |
| 15 | EGR valve, immobilizer control unit, engine compartment fuse/relay box (relays R1, R4), A/C relay, variable geometry turbocharger (VGT) actuator, camshaft position (CMP) sensor | 15 |
| 16 | Not used | — |
| 17 | Climate control module | 10 |
| 18 | Not used | — |
| 19 | Not used | — |
| 20 | A/C compressor relay | 10 |
| 21 | Passenger compartment fuse/relay box (relay R2, fuses 21, 22) | 50 |
| 22 | Passenger compartment fuse/relay box (relay R8, fuses 2–7, 25, 33, 34) | 50 |
| 23 | High-speed radiator fan relay, low-speed radiator fan relay | 30 |
| 24 | Engine compartment fuse/relay box (fuses 20, 25–29, 34), Alternator | 125 |
| 25 | ESC control module, data link connector (DLC), ABS control module | 40 |
| 26 | ESC control module, data link connector (DLC), ABS control module | 40 |
| 27 | Rear window defroster relay | 40 |
| 28 | Blower motor relay | 40 |
| 29 | Motor-driven power steering (MDPS) module | 80 |
| 30 | Spare fuse | 25 |
| 31 | Spare fuse | 20 |
| 32 | Spare fuse | 15 |
| 33 | Spare fuse | 10 |
| 34 | Engine compartment auxiliary fuse box No. 1 (relays R1–R4) | 150 |
| R1 | Not used | |
| R2 | Blower motor relay | |
| R3 | Fuel filter heater relay | |
| R4 | Engine control module (ECM) relay | |
| R5 | Daytime running light (DRL) relay | |
| R6 | A/C compressor relay | |
| R7 | Starter relay | |
| R8 | Burglar alarm relay | |
| R9 | Horn relay | |
| R10 | Low-speed radiator fan relay | |
| R11 | High-speed radiator fan relay | |
Auxiliary Fuse Box
Located on the right side of the engine compartment (i20 diesel models only).
Legend:
- R1 – Glow plug relay
- R2 – PTC heater relay 3
- R3 – PTC heater relay 2
- R4 – PTC heater relay 1
- 1 – PTC heater relay 3 (50 A)
- 2 – PTC heater relay 2 (50 A)
- 3 – PTC heater relay 1 (50 A)
- 4 – Glow plug relay / Air heater fuse (80 A)
Passenger Compartment Fuse Box
Located at the bottom of the driver's side dashboard.
Type 1
Early production model.
| Diagram | |
|---|---|
|
|
| Designation | Circuit Protected / Component |
| P / WDW -LH | Master power window switch, driver's door auto-up/down safety module, right rear power window switch, front passenger power window switch (RHD models) |
| S / HTD | Front passenger seat heater switch, driver's seat heater switch |
| RR WIPER | Rear window wiper motor, multifunction switch (wiper control) |
| H / LP RH | Right headlight, instrument cluster (headlight indicator) |
| IGN 2 | Headlight leveling switch, cabin temperature sensor, body control module (BCM), climate control module, sunroof control module, left/right headlights, underhood fuse/relay box (fuel filter heater relay, DRL relay, blower motor relay), diesel auxiliary fuse box (PTC heater relays 2 & 3) |
| PCU | Fuel filter water sensor, mass air flow (MAF) sensor, engine control module (ECM) (MT), powertrain control module (PCM) (AT) |
| STOP LP | Brake lamp switch, data link connector (DLC), power window relay |
| A / BAG | Seat belt reminder module, SRS control module |
| HAZARD | Hazard warning switch, hazard flasher relay |
| SAFETY P / W | Driver's power window safety anti-pinch module |
| CLUSTER | Trip computer, instrument cluster illumination, body control module (BCM) |
| TCU | Overdrive switch, pulse generators A & B, vehicle speed sensor (VSS) |
| IGN1 | Alternator (Kappa engine), motor-driven power steering (MDPS) control module, tire pressure monitoring system (TPMS) module |
| ABS | Electronic stability control (ESC) switch, steering angle sensor (SAS), anti-lock braking system (ABS) module, ESC module, yaw rate sensor, engine compartment fuse/relay box (diagnostic connector) |
| IGN COIL | Ignition coil (Kappa engine), ignition coils 1–4 (Gamma engine), ignition condenser (Gamma engine) |
| B / UP LP | Transmission range switch (Gamma engine), backup lamp switch |
| A / BAG IND | Instrument cluster (airbag telltale) |
| T / SIG LP | Hazard warning switch |
| TAIL LP LH | Daytime running light (DRL) relay, license plate lamp, left rear combination lamp, left headlight |
| TAIL LP RH | Right headlight, right rear combination lamp, interior illumination |
| ACC | Power exterior mirrors, audio system, trip computer |
| C / LIGHT | Hyundai i20 cigarette lighter fuse |
| RR FOG LP | Rear fog lamp relay |
| B / A HORN | Anti-theft alarm relay |
| DR LOCK | Tailgate unlock relay, door lock/unlock relay, central locking system |
| FRT FOG LP | Front fog lamp relay |
| FOLDING | Power folding mirror switch |
| S / ROOF | Sunroof control module |
| START | Engine control module (ECM - diesel models), engine compartment fuse/relay box (starter relay, burglar alarm relay) |
Type 2
Overview of the Hyundai i20 interior fuse box.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit Protected / Component | Rating (A) |
| R1 | Rear window defroster relay | |
| R2 | Power window relay | |
| R3 | Front fog lamp relay | |
| R4 | Rear fog lamp relay | |
| R5 | Not used | |
| R6 | Door unlock / Door lock relay | |
| R7 | Tailgate unlock / Tailgate lock relay | |
| R8 | Tail lamp relay | |
| R9 | Daytime running light (DRL) relay | |
| R10 | Hazard warning flasher relay | |
| 1 | Engine compartment fuse/relay box (relays R7, R8), Engine control module (ECM) / Not used | 10 |
| 2 | Sunroof control module | 20 |
| 3 | Power folding exterior mirrors switch | 10 |
| 4 | Front fog lamp relay | 10 |
| 5 | Door lock relay, door unlock relay, tailgate unlock relay | 20 |
| 6 | Anti-theft alarm system relay | 15 |
| 7 | Rear fog lamp relay | 10 |
| 8 | Not used | 25 |
| 9 | Cigarette lighter fuse | 15 |
| 10 | Audio system, trip computer, power exterior mirrors | 10 |
| 11 | Interior illumination, right headlight, right rear combination lamp | 10 |
| 12 | License plate lamp, left rear combination lamp, left headlight, daytime running light (DRL) relay | 10 |
| 13 | Hazard warning switch | 10 |
| 14 | Instrument cluster | 10 |
| 15 | Backup lamp switch, transmission range selector switch | 10 |
| 16 | Ignition condenser, ignition coils 1–4 | 15 |
| 17 | Engine compartment fuse/relay box (diagnostic connector), ESC control module, ESC off switch, steering angle sensor (SAS), yaw rate sensor, ABS control module | 10 |
| 18 | MDPS control module, TPMS control module, alternator | 10 |
| 19 | Pulse generator, vehicle speed sensor (VSS), overdrive main switch | 10 |
| 20 | Instrument cluster, trip computer, body control module (BCM) | 10 |
| 21 | Driver’s power window switch | 15 |
| 22 | Hazard warning light relay, hazard warning switch | 15 |
| 23 | SRS control module, seat belt reminder switch | 10 |
| 24 | Not used | 25 |
| 25 | Data link connector (DLC), power window relay, brake lamp switch | 15 |
| 26 | Mass air flow (MAF) sensor, engine control module (ECM), powertrain control module (PCM), fuel filter water sensor | 10 |
| 27 | Engine compartment fuse box No. 1 (relays R2, R3, R5), climate control module, headlights, sunroof control module, body control module (BCM), cabin temperature sensor, headlight leveling switch | 10 |
| 28 | Instrument cluster, right headlight | 10 |
| 29 | Multifunction switch, rear wiper motor | 15 |
| 30 | Heated front seat switches | 15 |
| 31 | Driver's power window switch, rear left power window switch, front passenger power window switch (RHD), master power window switch | 25 |
| 32 | Driver’s power window switch, rear right power window switch, front passenger power window switch (LHD), master power window switch | 25 |
| 33 | Door ajar switch, instrument cluster, trip computer, climate control module, luggage compartment lamp, overhead console lamp, map lamps, interior illumination, rear defroster relay, TPMS control module, body control module (BCM) | 10 |
| 34 | Audio system | 20 |
| 35 | Left headlight | 10 |
| 36 | Powertrain control module (PCM), climate control module, power exterior mirrors, engine control module (ECM) | 10 |
| 37 | Multifunction switch, front wiper motor | 25 |