Lexus GS 300 (1991 – 1997) – fuse box diagram
Year of production: 1991, 1992, 1993, 1994, 1995, 1996, 1997
Passenger Compartment
| Number | Description |
| 1 | Integration Relay |
| 2 | Daytime Running Light Relay |
| 3 | Relay Box |
| 4 | Theft Deterrent ECU |
| 5 | Fuse Box |
| 6 | Wiper Relay |
| 7 | J/B No. 3 |
| 8 | A/C Control Assembly |
| 9 | Traction ECU (with Traction Control) |
| 10 | A/C Lock Amplifier |
| 11 | ABS and Traction ECU (with Traction Control) ABS ECU (without Traction Control) |
| 12 | Blower Motor Control Relay |
| 13 | Engine Control Module (Engine and Electronically Controlled Transmission ECU) |
| 14 | Shift Lock ECU |
| 15 | Center Airbag Sensor Assembly |
| 16 | Cruise Control ECU |
| 17 | PPS ECU |
| 18 | Tilt and Power Telescopic ECU |
Passenger Compartment Fuse Box
| Description | Ampere rating [A] | Description | |
| 1 | SEAT HTR | 15 | Seat heater |
| 2 | STOP | 20 | Shift lock system, high mounted stoplight, cruise control system, anti-lock brake system, traction control system, multiport fuel injection system / sequential multiport fuel injection system, stop lights |
| 3 | GAUGE | 15 | Rear window and outside rear view mirror defogger, heater control system, air conditioning system, gauges and meters, service reminder indicators and warning buzzers (except discharge and open door warning lights), charging system, automatic transmission indicator, back-up lights, daytime running light system |
| 4 | ECU-IG | 10 | Shift lock system, telephone, power door lock system for passenger seat, seat belt system, anti-lock brake system, power steering control system, traction control system, cruise control system, driving pattern selector switch, tilt and telescopic control system, power antenna, electronic cooling fan system, instrument panel lights, automatic light control system, power door lock control system |
| 5 | CIG | 15 | Clock, air conditioning system, radio, cassette tape player, compact disc player, shift lock system, SRS, front and rear cigarette lighters, power door lock control system, power rear view mirror control system, power antenna, theft deterrent |
| 6 | — | — | — |
| 7 | TURN | 10 | Turn signal lights and indicator |
| 8 | WIPER | 15 | 1991-1993: Windshield wipers and washer, headlight cleaner |
| 20 | 1994-1997: Windshield wipers and washer, headlight cleaner | ||
| 9 | PANEL | 7,5 | Automatic transmission indicator, heater control system, emergency flasher switch, glovebox light, rear ashtrays, clock, front cigarette lighter light, radio, cassette tape player, compact disc player, driving pattern selector switch light, instrument panel lights, daytime running lights system |
| 10 | SRS | 7,5 | SRS airbag |
| 11 | TAIL | 10 | License plate lights, parking lights, tail lights |
| 12 | MIR HTR | 10 | Outside rear view mirror defogger |
| 13 | POWER | 30 | Moon roof, power window, power seat, theft deterrent, tilt and power telescopic, power main relay |
| 14 | DEFOG | 40 | Rear window defogger, “MIR HTR” fuse |
| Relay | |||
| R1 | Integration relay | ||
| Number | Relay |
| R1 | Short pin |
| R2 | Taillight |
| R3 | Defogger |
Passenger Compartment Relay Box
| Number | Relay |
| R1 | Turn signal flasher |
| R2 | Daytime running light system No.4 |
| R3 | Fog light |
| R4 | Power main |
| Number | Description |
| 1 | Moon Roof Control Relay |
| 2 | Wireless Door Lock ECU |
| 3 | Stereo Component Amplifier |
| 4 | Auto Antenna Motor and Relay |
| 5 | Fuel Pump ECU |
Engine Compartment
| Number | Description |
| 1 | Fuse Box |
| 2 | Headlight Cleaner Relay |
| 3 | Traction Solenoid Relay |
Engine Compartment Fuse Box
| Number | Fuse | Ampere rating [A] | Description |
| 1 | FOG | 15 | Fog lights |
| 2 | DRL | 7,5 | Daytime running light system |
| 3 | TRAC | 10 | Traction control system |
| 4 | DOME | 10 | Interior light, vanity lights, electric moon roof system, cruise control system, open door warning light, personal lights, trunk room light, door courtesy lights, footlights, ignition switch light, clock, anti-lock brake system, power antenna, radio, locking with wireless remote control system, theft deterrent system |
| 5 | ECU-B | 7,5 | Locking with wireless remote control system, anti-lock brake system, traction control system, cruise control system, daytime running light system, air conditioning system |
| 6 | ALT SENSING | 7,5 | Charging system |
| 7 | AM2 | 15 | Multiport fuel injection system / sequential multiport fuel injection system, SRS airbag, charging lamp, starting system, electronic ignition system/ distributor ignition system, gauges and meters, service reminder indicators and warning buzzers (except discharge and open door warning lights) |
| 8 | TEL | 15 | Telephone |
| 9 | HAZ. HORN | 20 | Emergency flashers, horns |
| 10 | EFI | 20 | Electronically controlled automatic transmission system, multiport fuel injection system / sequential multiport fuel injection system |
| 11 | RADIO NO. 1 | 25 | Radio, cassette tape player, compact disc player, power antenna |
| 12 | IG2 | 30 | Electronic ignition system / distributor ignition system |
| 13 | OBD II | 7,5 | 1996-1997: On−board diagnosis system |
| 14 | HEAD RH | 15 | Right hand headlight |
| HEAD RH-UPR | 10 | Right-hand headlight (high beam) | |
| 15 | HEAD LH | 15 | Left-hand headlight |
| HEAD LH-UPR | 10 | Left-hand headlight (high beam) | |
| 16 | HEAD RH-LWR | 10 | Right-hand headlight (low beam) |
| 17 | HEAD LH-LWR | 10 | Left-hand headlight (low beam) |
| 18 | RDI FAN | 30 | Electronic cooling fan system |
| 19 | — | — | — |
| 20 | AM1 | 40 | Ignition switch, “ECU–IG”, “WIPER”, “GAUGE”, “TURN”, “SEAT–HTR”, “CIG” fuses |
| 21 | HEATER | 50 | Heater relay |
| 22 | ABS | 60 | Radiator fan main relay (point side), traction solenoid relay (point side), ABS solenoid relay (point side), “TRAC” fuse |
| 23 | ALT | 100 | Taillight relay, generator (alternator), “FOG”, “AM1”, “HEATER”, “DEFOG”, “ABS”, “STOP”, “SRS”, “POWER” fuses |
| 24 | MAIN | 50 | Headlight relay, daytime running light relay no.2, starter relay (point side) |
| 25 | ABS No.2 | 40 | ABS motor relay (point side), traction motor relay (point side) |
| Relay | |||
| R1 | Daytime running light system No.3 | ||
| R2 | Radiator fan | ||
| R3 | Daytime running light system No.2 | ||
| R4 | Heater | ||
| R5 | Short pin | ||
| R6 | Air conditioner compressor clutch | ||
| R7 | Starter | ||
| R8 | ABS motor | ||
| R9 | ABS solenoid | ||
| R10 | Radiator fan main | ||
| R11 | Ignition (IG2) | ||
| R12 | Headlight | ||
| R13 | Traction motor | ||
| R14 | Horn | ||
| R15 | EFI | ||
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.