Diagrams of fuse boxes and relays – Lexus GS 300 (S140)

Applies to vehicles manufactured in the years:

1991, 1992, 1993, 1994, 1995, 1996, 1997.

 

Passenger compartment

1. Integration relay
2. Daytime running lamps relay
3. Relay box
4. Theft deterrent ECU
5. Fuse box
6. Wiper relay
7. J / B №3
8. Air conditioning control unit
9. Traction ECU (with traction control)
10. Air conditioning lock booster
11. ABS and Traction ECU (with traction control) ABS ECU (without traction control)
12. Blower motor control relay
13. Engine control module (engine and transmission electronic ECU)
14. Shift lock ECU
15. Center airbag sensor assembly
16. Cruise Control ECU
17. PPS ECU
18. Telescopic tilt and power controller

 

1. Sunroof control relay
2. Wireless door lock ECU
3. Component stereo amplifier
4. Automatic antenna motor and relay
5. Fuel pump ECU

 

Distribution board fuse box diagram

The fuse box is located behind a cover on the left side of the steering column.

Reverse

Number	Amperes [A]	Description
1	15	Seat heating
2	20	Shift lock system, high mounted brake light, cruise control, anti-lock brake system, traction control system, multiport fuel injection system / sequential multiport fuel injection system, stop lights
3	15	Rear window and rearview mirror defogger, heater control system, air conditioning system, gauges and meters, service reminder indicators and warning chimes (except discharge warning lamps and door open), charging system, automatic transmission indicator, reversing lamps, day light system for driving
4	10	Shift lock system, telephone, SEAT passenger door lock system, SEAT belt system, anti-lock brake system, power steering control system, traction control system, cruise control system, travel pattern selector switch, tilt and telescope control system, power antenna, electronic fan system coolant, instrument panel lighting, automatic lighting control system, electric door lock control system
5	15	Clock, air conditioning system, radio, cassette deck, compact disc player, shift lock system, SRS, front and rear cigarette lighters, door lock control system, rear view mirror control system, power antenna, anti-theft
6	–	–
7	10	Turn on the traffic lights and indicator
8	15	1991-1993: Windshield Wipers and Washers, Headlamp Cleaner
	20	1994-1997: Windshield wipers and washers, headlight cleaner
9	7.5	Automatic transaxle indicator, heater control system, emergency stop switch, glove box lighting, rear ashtrays, clock, front cigarette lighter light, radio, cassette deck, compact disc player, driving pattern selector switch, instrument panel lighting, daytime running light system
10	7.5	SRS airbag
11	10	License plate lights, parking lights, tail lights
12	10	Outside rearview mirror defogger
13	thirty	Sunroof, Power Window, SEAT , Anti-theft, Tilt & Telescopic Power, Main Power Relay
14	40	Rear window defogger, “MIR HTR” fuse
Relay
R1	Integration relay
Rear relays
R1	A short pin
R2	Rear lights
R3	Demister

Passenger compartment relay box

Number	Relay
R1	Turn on the signal blinker
R2	Daytime running light system №4
R3	Fog lights
R4	Main power

 

Engine compartment

1. Fuse box
2. Headlight cleaning relay
3. Traction electromagnetic relay

 

Diagram of the fuse box in the engine compartment

Number	Amperes [A]	Description
1	15	Fog lights
2	7.5	Daytime running light system
3	10	Traction control system
4	10	Interior lighting, vanity lighting, electric sunroof system, cruise control, door open warning light, personal lighting, trunk light, door ceiling light, headlights, ignition light, clock, anti-lock system, power antenna, radio, locking with wireless remote control system, anti-theft system;
5	7.5	Locking by wireless remote control system, anti-lock brake system, traction control system, cruise control system, daytime running light system, air conditioning system
6	7.5	Charging system
7	15	Multiport fuel injection system / sequential multiport fuel injection system, SRS airbag, charging lamp, starting system, electronic ignition system / distributor, gauges and meters, service reminder indicators and warning chimes (except discharge warning lamps and door open)
8	15	Telephone
9	20	Emergency headlamps, horns
10	20	Electronically controlled automatic transmission, multiport fuel injection system / sequential multiport fuel injection system
11	25	Radio, cassette recorder, CD player, power antenna
12	thirty	Electronic ignition system / distributor
13	7.5	1996-1997: On-Board Diagnostic System
14	15	Headlight on the right
	10	Right headlight (high beam)
15	15	Left headlight
	10	Left headlight (high beam)
16	10	Right headlight (low beam)
17	10	Left headlight (low beam)
18	thirty	Electronic cooling fan system
19	–	–
20	40	Ignition switch, “ECU-IG”, “WIPER”, “INDICATOR”, “TURN”, ” SEAT HTR”, “CIG” fuses
21	50	Heater relay
22	60	Radiator Fan Main Relay (dot side), Traction solenoid relay (dot side), ABS Solenoid Relay (dot side), “TRAC” fuse
23	100	Tail lamp relay, alternator (alternator), “FOG”, “AM1”, “HEATER”, “DEFOG”, “ABS”, “STOP”, “SRS”, “POWER” fuses
24	50	Headlamp Relay, Daytime Running Lamp Relay No.2, Starter Relay (Point Side)
25	40	ABS motor relay (point side), traction motor relay (point side)
Relay
R1	Daytime running light system №3
R2	Radiator fan
R3	Daytime running light system №2
R4	Heater
R5	A short pin
R6	Air conditioning compressor clutch
R7	Starter
R8	ABS engine
R9	ABS solenoid valve
R10	Main radiator fan
R11	Ignition (IG2)
R12	Reflector
R13	Traction motor
R14	Horn
R15	EFI