Advertisements
Fuse box diagram (fuse layout), location, and assignment of fuses and relays Lexus GS 300 (S140) (1991, 1992, 1993, 1994, 1995, 1996, 1997).
Checking and Replacing Fuses
The fuses are designed to blow, protecting the wiring harness and electrical systems from damage. If any of the electrical components do not operate, a fuse may have melted. If this happens, check and replace the fuses as necessary. Look carefully at the fuse. If the thin wire inside is broken, the fuse has blown. If you are not sure or if it is too dark to see, try replacing the suspected fuse with one of the same value that you know is good.
In case if you do not have a spare fuse, in an emergency you can pull out fuses, which may be dispensable for normal driving (for example, audio system, cigarette lighter, OBD, seat heater, and the like), and use it if its amperage rating is the same. If you cannot use one of the same amperage, use one lower than, but as close as possible to, the amperage. If the amperage is lower than that specified, the fuse might blow out again but this does not indicate anything wrong. Be sure to get the correct fuse as soon as possible and return the substitute to its original clips.
Notice
- Always switch off the ignition system and the affected electrical circuit before replacing a fuse.
- 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.
- If the replaced fuse blows again, have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional.
Passenger Compartment
- Integration Relay
- Daytime Running Light Relay
- Relay Box
- Theft Deterrent ECU
- Fuse Box
- Wiper Relay
- J/B №3
- A/C Control Assembly
- Traction ECU (with Traction Control)
- A/C Lock Amplifier
- ABS and Traction ECU (with Traction Control)
ABS ECU (without Traction Control) - Blower Motor Control Relay
- Engine Control Module (Engine and Electronically Controlled Transmission ECU)
- Shift Lock ECU
- Center Airbag Sensor Assembly
- Cruise Control ECU
- PPS ECU
- Tilt and Power Telescopic ECU
- Moon Roof Control Relay
- Wireless Door Lock ECU
- Stereo Component Amplifier
- Auto Antenna Motor and Relay
- Fuel Pump ECU
Advertisements
Instrument Panel Fuse Box Diagram
The fuse box is located behind the cover to the left of the steering column.
Rear side
| № | Fuse | A | Protected components |
|---|---|---|---|
| 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 |
| R1 | Integration relay | ||
| R1 | Short pin | ||
| R2 | Taillight | ||
| R3 | Defogger | ||
Passenger Compartment Relay Box
| № | Relay |
|---|---|
| R1 | Turn signal flasher |
| R2 | Daytime running light system №4 |
| R3 | Fog light |
| R4 | Power main |
Advertisements
Engine Compartment
- Fuse Box
- Headlight Cleaner Relay
- Traction Solenoid Relay
Engine Compartment Fuse Box Diagram
| № | Fuse | A | Protected components |
|---|---|---|---|
| 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 № 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 №2, starter relay (point side) |
| 25 | ABS №2 | 40 | ABS motor relay (point side), traction motor relay (point side) |
| R1 | Daytime running light system №3 | ||
| R2 | Radiator fan | ||
| R3 | Daytime running light system №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 | ||
Advertisements