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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Toyota MR2 (W20) (1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999).
Checking and Replacing Fuses
The fuses are designed to blow before the entire wiring harness is damaged. If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary.
- Turn the engine switch off and turn off all electrical accessories.
- Open the fuse box cover.
- See diagrams below for details about which fuse to check.
- Remove the fuse.
- Check if the fuse is blown – if the thin wire inside is broken, the fuse has blown.
- Replace the blown fuse with a new fuse of an appropriate amperage rating.
Notice
- Never use a fuse of a higher amperage rating than that indicated, or use any other object in place of a fuse, even as a temporary fix. This can cause extensive damage or even fire.
- Always use a genuine Toyota fuse or equivalent.
- Do not modify the fuses or fuse boxes.
- If the replaced fuse blows again, have the vehicle inspected by any authorized Toyota dealer or repairer, or another duly qualified and equipped professional.
Location of the fuses and relays
Left Kick Panel (R/B №1)
| Fuse | A | Description |
|---|---|---|
| TAIL | 15 | A/C Control Assembly |
| Ashtray Illumination | ||
| Cigarette Lighter Illumination | ||
| Clock | ||
| Combination Meter (Illumination) | ||
| A/T Indicator Light [Comb. Meter] | ||
| Light Control SW [Comb. SW] | ||
| Diode (for Electrical Idle–Up System) | ||
| Fog Light SW | ||
| Front Side Marker Light LH | ||
| Front Side Marker Light RH | ||
| Front Clearance Light LH | ||
| Front Clearance Light RH | ||
| Hazard SW | ||
| Licence Plate Light | ||
| O/D Main SW | ||
| Radio and Player | ||
| Rheostat | ||
| Tail and Rear Side Marker Light LH [Rear Comb. Light LH] | ||
| Tail and Rear Side Marker Light RH [Rear Comb. Light RH] | ||
| Taillight Relay | ||
| Retract Control Relay | ||
| Stereo Component Amplifier | ||
| RAD & CIG | 15 | Cigarette Lighter |
| Clock | ||
| Auto Antenna Control Relay and Motor | ||
| Center Airbag Sensor Assembly | ||
| Radio and Player | ||
| Remote Control Mirror LH | ||
| Remote Control Mirror RH | ||
| Remote Control Mirror SW | ||
| Shift Lock ECU | ||
| Stereo Component Amplifier | ||
| Theft Deterrent ECU | ||
| Water Temp. Sender | ||
| Defogger Relay | ||
| Heater Relay | ||
| GAUGE | 7.5 | Combination Meter |
| ABS ECU | ||
| A/C Amplifier | ||
| A/C Control Assembly | ||
| Air Inlet Servo Motor | ||
| Air Vent Mode Control Servo Motor | ||
| Brake Fluid Level SW | ||
| Cooling Fan Warning Light [Comb. Meter] | ||
| ABS Warning Light [Comb. Meter] | ||
| Check Engine Warning Light [Comb. Meter] | ||
| Cruise Control Indicator Light [Comb. Meter] | ||
| O/D Off Indicator Light [Comb. Meter] | ||
| Power Steering Warning Light [Comb. Meter | ||
| Seat Belt Warning Light [Comb. Meter] | ||
| Steering Position Sensor [Comb. SW] | ||
| Center Airbag Sensor Assembly | ||
| Diode (for Electrical Idle–Up System) | ||
| Diode (for Power Window) | ||
| Door Lock ECU | ||
| Engine Oil Level Sensor | ||
| Fuel Sender | ||
| Junction Connector | ||
| O/D Main SW | ||
| Oil Pressure SW | ||
| Parking Brake SW | ||
| Power Main Relay | ||
| Power Steering Driver | ||
| Power Steering ECU | ||
| Retract Control Relay | ||
| Seat Belt Warning Relay | ||
| TURN | 7.5 | Turn Signal Indicator Lights [Comb. Meter] |
| Turn Signal SW [Comb. SW | ||
| Front Turn Signal Light LH | ||
| Front Turn Signal Light RH | ||
| Hazard SW | ||
| Rear Turn Signal Light LH [Rear Comb. Light LH] | ||
| Rear Turn Signal Light RH [Rear Comb. Light RH] | ||
| Turn Signal Flasher | ||
| WIPER | 20 | Wiper and Washer SW [Comb. SW] |
| Washer Motor | ||
| Wiper Motor | ||
| DEFOG | 20 | Rear Window Defogger |
| Defogger Relay | ||
| STOP | 15 | ABS ECU |
| Cruise Control ECU | ||
| PCME (Engine and ECT ECU) | ||
| PCME (Engine ECU) | ||
| High Mount Stop Light | ||
| Stop Light LH [Rear Comb. Light LH] | ||
| Stop Light RH [Rear Comb. Light RH] | ||
| Shift Lock ECU | ||
| Stop Light SW | ||
| DOOR | 20 | Door Lock ECU |
| Door Lock Motor LH | ||
| Door Lock Motor RH | ||
| POWER | 30 | Power Main Relay |
| Power Window SW RH | ||
| Power Window Master SW | ||
| Door Lock Control SW | ||
| Power Window Motor RH | ||
| Power Window Motor LH | ||
| PANEL | 7.5 | A/C Control Assembly |
| Ashtray Illumination | ||
| Cigarette Lighter Illumination | ||
| Clock | ||
| Combination Meter (Illumination) | ||
| Fog Light SW | ||
| Hazard SW | ||
| Panel Relay | ||
| Radio and Player | ||
| Rheostat | ||
| Stereo Component Amplifier | ||
| R1 | Defogger Relay | |
| R2 | Taillight Relay | |
| R3 | Turn Signal Flasher | |
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Engine Compartment Left (R/B №2)
| Fuse | A | Description |
|---|---|---|
| EFI | 15 | DLC (Check Connector) |
| PCME (Engine and ECT ECU) | ||
| PCME (Engine ECU) | ||
| Fuel Pump Resistor | ||
| Fuel Pump Relay | ||
| Fuel Pump | ||
| IACV (ISC Valve) | ||
| HOS2 (Oxygen Sensor) | ||
| VSV (for EGR System) | ||
| VSV (for A/C Idle–Up System) | ||
| VSV (for Fuel Pressure Up Control System) | ||
| VSV (for Turbo Pressure Control System) | ||
| VSV (for T–VIS) | ||
| Circuit Opening Relay | ||
| EFI Main Relay | ||
| VENT | 20 | Cooling Fan Motor (for Engine Compartment) |
| Cooling Fan Relay (for Engine Compartment) | ||
| ECU–IG | 7.5 | ABS ECU |
| Alternator | ||
| Auto Antenna Control Relay and Motor | ||
| Back–Up Light SW (M/T) | ||
| Cooling Fan ECU (for Engine Compartment) | ||
| A/T Indicator Light [Comb. Meter] | ||
| Cruise Control ECU | ||
| PCME (Engine and ECT ECU) | ||
| A/T Indicator SW | ||
| Back–Up Light SW (A/T) | ||
| Back–Up Light LH [Rear Comb. Light LH] | ||
| Back–Up Light RH [Rear Comb. Light RH] | ||
| VSPG (Speed Sensor) | ||
| Shift Lock ECU | ||
| R1 | Ignition Main Relay | |
| R2 | EFI Main Relay | |
| R3 | Circuit Opening Relay | |
| R4 | Cooling Fan Relay (for Engine Compartment) | |
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Front Luggage Compartment Right (R/B №5)
| Fuse | A | Description |
|---|---|---|
| AM1 | 50 | Fuse: FR FOG, STOP, DEFOG, TAIL, POWER, DOOR, PANEL |
| Ignition SW (Fuse: RAD & CIG, GAUGE, TURN, WIPER) | ||
| HTR | 40 | Heater Relay (Fuse: A/C) |
| ABS | 80 | ABS Actuator |
| ALT | 120 | Headlight Relay (Fuse: HEAD (RH), HEAD (LH)) |
| Fuse: ECU–B, AM2, HAZ–HORN, RTR, DOME | ||
| Ignition SW (Ignition Main Relay (Fuse: AM2, ECU–IG, VENT, EFI) | ||
| AM2 | 40 | Battery |
| Fuse: ALT SENCING | ||
| ALT SENCING | 7.5 | Alternator |
| CDS FAN | 30 | A/C Condenser Fan Motor |
| Radiator Fan Motor | ||
| Fan Relay No. 2 | ||
| Fan Relay No. 3 | ||
| RDI FAN | 30 | Radiator Fan Motor |
| Fan Relay No. 1 | ||
| FR FOG | 15 | Light Control SW [Comb. SW] |
| Fog Light SW | ||
| Fog Light LH | ||
| Fog Light RH | ||
| Retract Control Relay | ||
| Front Fog Light Relay | ||
| HEAD (LH) | 15 | High Beam Indicator Light [Comb. Meter] |
| Dimmer SW [Comb. SW] | ||
| Headlight LH | ||
| Retract Control Relay | ||
| Front Fog Light Relay | ||
| HEAD (RH) | 15 | High Beam Indicator Light [Comb. Meter] |
| Dimmer SW [Comb. SW] | ||
| Headlight RH | ||
| Retract Control Relay | ||
| Front Fog Light Relay | ||
| A/C | 10 | A/C Magnetic Clutch |
| A/C Amplifier | ||
| A/C Control Assembly | ||
| A/C Dual Pressure SW | ||
| A/C Magnetic Clutch Relay | ||
| VSV (for A/C Idle–Up System) | ||
| ECU–B | 7.5 | ABS ECU |
| Airbag Warning Light [Comb. Meter] | ||
| Cruise Control ECU | ||
| Center Airbag Sensor Assembly | ||
| AM2 | 7.5 | A/C Amplifier |
| Cold Start Injector | ||
| Clutch Start SW (M/T) | ||
| Charge Warning Light [Comb. Meter] | ||
| Center Airbag Sensor Assembly | ||
| Diode (for A/C System) | ||
| PCME (Engine and ECT ECU) | ||
| PCME (Engine ECU) | ||
| Ignition SW (AM2) | ||
| PNS (Neutral Start SW) | ||
| Start Injector Time SW | ||
| Starter Relay | ||
| Water Temp. Sender (for Radiator Fan) | ||
| Ignition Main Relay | ||
| Fan Main Relay | ||
| Fan Relay No. 1 | ||
| Fan Relay No. 2 | ||
| HAZ–HORN | 15 | Turn Signal Indicator Lights [Comb. Meter] |
| Horn SW [Comb. SW] | ||
| Turn Signal SW [Comb. SW] | ||
| Front Turn Signal Light LH | ||
| Front Turn Signal Light RH | ||
| Hazard SW | ||
| Horn | ||
| Rear Turn Signal Light RH [Rear Comb. Light RH] | ||
| Theft Deterrent Horn | ||
| Turn Signal Flasher | ||
| Horn Relay | ||
| RTR | 30 | Retract Control Relay |
| Retract Motor LH | ||
| Retract Motor RH | ||
| DOME | 15 | Auto Antenna Control Relay and Motor |
| Clock | ||
| Open Door Warning Light [Comb. Meter] | ||
| Door Courtesy Light LH | ||
| Door Courtesy Light RH | ||
| Door Courtesy SW LH | ||
| Door Courtesy SW RH | ||
| Door Key Cylinder Light | ||
| Interior Light Control Relay | ||
| Ignition Key Cylinder Light | ||
| Personal Light | ||
| Rear Turn Signal Light LH [Rear Comb. Light LH] | ||
| Rear Luggage Compartment Door Courtesy SW | ||
| Rear Luggage Compartment Light | ||
| Rear Woofer Amplifier LH | ||
| Rear Woofer Amplifier RH | ||
| Seat Belt Warning Relay | ||
| Stereo Component Amplifier | ||
| R1 | Heater Relay | |
| R2 | Headlight Relay | |
| R3 | Horn Relay | |
| R4 | Fan Relay No.2 | |
| R5 | Fan Relay No.1 | |
| R6 | Fan Main Relay | |
| R7 | Fan Relay No.3 | |
| R8 | Front Fog Light Relay | |
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