Lexus GS 300 (S140) (1991-1997) Fuse Diagram

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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Lexus GS 300 (S140) (1991, 1992, 1993, 1994, 1995, 1996, 1997).

Lexus GS 300 (S140) (1991-1997)

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

Passenger Compartment

  1. Integration Relay
  2. Daytime Running Light Relay
  3. Relay Box
  4. Theft Deterrent ECU
  5. Fuse Box
  6. Wiper Relay
  7. J/B №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

  1. Moon Roof Control Relay
  2. Wireless Door Lock ECU
  3. Stereo Component Amplifier
  4. Auto Antenna Motor and Relay
  5. Fuel Pump ECU

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Instrument Panel Fuse Box Diagram

The fuse box is located behind the cover to the left of the steering column.

Instrument Panel Fuse Box Diagram

Rear sideInstrument Panel Fuse Box Diagram (rear side)

FuseAProtected components
1SEAT HTR15Seat heater
2STOP20Shift 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
3GAUGE15Rear 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
4ECU-IG10Shift 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
5CIG15Clock, 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-- -
7TURN10Turn signal lights and indicator
8WIPER151991-1993: Windshield wipers and washer, headlight cleaner
201994-1997: Windshield wipers and washer, headlight cleaner
9PANEL7.5Automatic 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
10SRS7.5SRS airbag
11TAIL10License plate lights, parking lights, tail lights
12MIR HTR10Outside rear view mirror defogger
13POWER30Moon roof, power window, power seat, theft deterrent, tilt and power telescopic, power main relay
14DEFOG40Rear window defogger, "MIR HTR" fuse
Relay
R1Integration relay
Back-side Relays
R1Short pin
R2Taillight
R3Defogger

Passenger Compartment Relay Box

Passenger Compartment Relay Box

Relay
R1Turn signal flasher
R2Daytime running light system №4
R3Fog light
R4Power main

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Engine Compartment

Engine Compartment

  1. Fuse Box
  2. Headlight Cleaner Relay
  3. Traction Solenoid Relay

 

Engine Compartment Fuse Box Diagram

Engine Compartment Fuse Box Diagram

FuseAProtected components
1FOG15Fog lights
2DRL7.5Daytime running light system
3TRAC10Traction control system
4DOME10Interior 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
5ECU-B7.5Locking with wireless remote control system, anti-lock brake system, traction control system, cruise control system, daytime running light system, air conditioning system
6ALT SENSING7.5Charging system
7AM215Multiport 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)
8TEL15Telephone
9HAZ. HORN20Emergency flashers, horns
10EFI20Electronically controlled automatic transmission system, multiport fuel injection system / sequential multiport fuel injection system
11RADIO № 125Radio, cassette tape player, compact disc player, power antenna
12IG230Electronic ignition system / distributor ignition system
13OBD II7.51996-1997: On-board diagnosis system
14HEAD RH15Right hand headlight
HEAD RH-UPR10Right-hand headlight (high beam)
15HEAD LH15Left-hand headlight
HEAD LH-UPR10Left-hand headlight (high beam)
16HEAD RH-LWR10Right-hand headlight (low beam)
17HEAD LH-LWR10Left-hand headlight (low beam)
18RDI FAN30Electronic cooling fan system
19-- -
20AM140Ignition switch, "ECU-IG", "WIPER", "GAUGE", "TURN", "SEAT?HTR", "CIG" fuses
21HEATER50Heater relay
22ABS60Radiator fan main relay (point side), traction solenoid relay (point side), ABS solenoid relay (point side), "TRAC" fuse
23ALT100Taillight relay, generator (alternator), "FOG", "AM1", "HEATER", "DEFOG", "ABS", "STOP", "SRS", "POWER" fuses
24MAIN50Headlight relay, daytime running light relay №2, starter relay (point side)
25ABS №240ABS motor relay (point side), traction motor relay (point side)
Relay
R1Daytime running light system №3
R2Radiator fan
R3Daytime running light system №2
R4Heater
R5Short pin
R6Air conditioner compressor clutch
R7Starter
R8ABS motor
R9ABS solenoid
R10Radiator fan main
R11Ignition (IG2)
R12Headlight
R13Traction motor
R14Horn
R15EFI

 

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