Toyota Corolla E140 Fuses: Complete Guide 2006-2013

ByAlex Smidt

The Toyota Corolla E140 generation, produced from 2006 to 2013, uses a dual fuse box system to protect all electrical circuits across the vehicle. Understanding the exact fuse layout is essential for diagnosing electrical failures, replacing blown fuses correctly, and avoiding damage to sensitive electronic components. This guide covers every fuse in both the engine compartment fuse box and the interior cabin fuse box, including amperage ratings and precise circuit functions for all E140 variants including the 1.4, 1.6, 1.8 petrol and 2.0 diesel engines.

Toyota Corolla E140 Engine Compartment Fuse Box

The engine compartment fuse box is located in the engine bay on the left side (driver’s side in LHD markets), near the battery. It contains high-amperage fuses protecting major electrical systems. Always disconnect the negative battery terminal before inspecting or replacing these fuses.

  • ALT fuse – 120A – Alternator charge circuit protection
  • AM1 fuse – 80A – Main power supply fuse 1, ignition and engine management
  • AM2 fuse – 60A – Main power supply fuse 2, body electrical systems
  • EFI fuse – 15A – Electronic fuel injection system, ECU power
  • IGNI fuse – 7.5A – Ignition switch signal circuit
  • HTR fuse – 30A – Heater blower motor main supply
  • ABS fuse – 30A – Anti-lock braking system motor and module
  • ECU-B fuse – 10A – Engine control unit battery backup supply
  • HORN fuse – 15A – Horn relay and horn circuit
  • MAIN fuse – 40A – Main relay power distribution
  • RAD No.1 fuse – 30A – Radiator cooling fan motor No.1
  • RAD No.2 fuse – 30A – Radiator cooling fan motor No.2
  • A/C fuse – 10A – Air conditioning compressor clutch relay
  • ST fuse – 7.5A – Starter motor signal relay circuit
  • DEICER fuse – 20A – Windshield wiper de-icer or rear window heater feed
  • DOME fuse – 15A – Dome light and interior lamp power
  • AM fuse – 40A – Secondary main distribution bus
  • WIPER fuse – 25A – Front wiper motor main power
  • TAIL fuse – 15A – Tail lights, number plate lights and parking lights
  • HEAD LH fuse – 15A – Left headlamp low and high beam circuit
  • HEAD RH fuse – 15A – Right headlamp low and high beam circuit
  • FOG fuse – 15A – Front fog lamp relay and circuit (where fitted)
  • POWER fuse – 30A – Power window master switch and motor supply

Toyota Corolla E140 Interior Cabin Fuse Box

The interior fuse box is located beneath the instrument panel on the driver’s side, behind a removable plastic cover. This box protects lower-amperage circuits related to comfort, infotainment, safety systems and lighting. Use the plastic fuse puller tool stored inside the cover to remove fuses without damage.

  • Fuse 1 – 10A – Power door lock actuators and keyless entry module
  • Fuse 2 – 15A – Cigarette lighter socket and 12V accessory outlet
  • Fuse 3 – 7.5A – Instrument cluster illumination and warning lights
  • Fuse 4 – 10A – Audio system, radio, CD player and head unit
  • Fuse 5 – 10A – Clock, hazard warning switch, central display
  • Fuse 6 – 15A – Rear window defogger relay and heater element
  • Fuse 7 – 10A – Combination meter, speedometer and tachometer
  • Fuse 8 – 10A – SRS airbag control module and crash sensors
  • Fuse 9 – 7.5A – Transmission control module (automatic gearbox models)
  • Fuse 10 – 10A – VSC and traction control module signal circuits
  • Fuse 11 – 15A – Interior lighting, courtesy lamps and map lights
  • Fuse 12 – 10A – Rear wiper motor and washer pump (estate/wagon models)
  • Fuse 13 – 20A – Seat heater elements (where fitted)
  • Fuse 14 – 10A – Electric mirror adjustment switch and motors
  • Fuse 15 – 7.5A – Cabin temperature sensor and automatic climate control
  • Fuse 16 – 10A – Cruise control actuator and switch signal
  • Fuse 17 – 7.5A – Theft deterrent system and immobiliser ECU
  • Fuse 18 – 15A – Washer pump (front), headlamp washer (where fitted)
  • Fuse 19 – 10A – Turn signal relay, hazard flashers and side indicators
  • Fuse 20 – 10A – Brake light switch signal and stop lamp circuit
  • Fuse 21 – 20A – Power window driver’s side motor and switch
  • Fuse 22 – 20A – Power window passenger side motors and switches
  • Fuse 23 – 10A – Back-up lights and reverse lamp circuit
  • Fuse 24 – 7.5A – OBD-II diagnostic connector constant power supply

Relay Locations in the E140 Fuse Boxes

Both fuse boxes also house relays that control high-current circuits via low-current switch signals. Key relays in the E140 include the main relay (fuel pump and EFI activation), the cooling fan relay, the A/C compressor relay, the horn relay, and the rear defogger relay. Relays are identified by their position numbers printed on the fuse box cover diagram. A failed relay produces the same symptoms as a blown fuse — always test both when diagnosing a dead circuit.

How to Identify a Blown Fuse on the Corolla E140

Toyota uses standard blade-type fuses (ATO/ATC) throughout the E140. The engine bay box may also use maxi blade fuses for high-amperage circuits such as the ALT, AM1 and AM2. To check a fuse without removing it, use a test light or multimeter on both metal test points visible on top of each fuse — if only one side has power, the fuse is blown. Visually, a blown fuse shows a broken metal element inside the transparent plastic body. Never replace a fuse with a higher amperage rating — this risks wiring harness fire and ECU damage. If a replacement fuse blows immediately, a short circuit exists in that circuit and must be diagnosed before replacing again.

Common Electrical Issues and Related Fuses on the E140

  • No interior lights – Check Fuse 11 (15A) in the cabin box and the DOME fuse (15A) in the engine bay box
  • Radio dead after battery replacement – Check Fuse 4 (10A) and confirm the audio unit security code is re-entered
  • Power windows not working – Check Fuse 21 and 22 (20A each) plus the POWER fuse (30A) in the engine bay
  • Brake lights inoperative – Check Fuse 20 (10A) and the brake light switch adjustment on the pedal bracket
  • No cooling fan operation – Check RAD No.1 and RAD No.2 (both 30A) in the engine bay and both cooling fan relays
  • ABS warning light on with no pump function – Check ABS fuse (30A) in engine compartment box
  • Cigarette lighter/USB adapter not working – Check Fuse 2 (15A), the most commonly blown fuse due to overloaded adapters

Important Notes for E140 Fuse Replacement

Always carry a spare fuse assortment in the vehicle. Toyota includes a small fuse puller and a limited set of spare fuses in the interior fuse box cover on most E140 markets. Use genuine Toyota or equivalent ISO-rated blade fuses only. The E140 uses the 2006 to 2013 production run and fuse box layouts can vary slightly between sedan, hatchback and estate body styles, as well as between markets (JDM, European, Australian). Always cross-reference with the fuse box lid diagram for your specific vehicle before making replacements.

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