Contents Wiring diagrams Section: Electrical Component Locations All sections

Electrical Component Locator: Other Lexus LS III

BUZZERS, RELAYS & TIMERS

ComponentComponent Location
ABS MTR RelayOn engine room No. 3 R/B.
ABS SOL RelayOn engine room No. 3 R/B.
A/C COMP RelayOn engine room No. 1 R/B.
AIR SUS RelayOn fusible link block.
Clearance Sonar Buzzer (Front)Behind left side of dash. (Схема №4)
Clearance Sonar Buzzer (Rear)Near center of rear speaker shelf, at base of rear window.
C/OPN RelayOn engine room No. 1 R/B.
D-ACC RelayOn driver side J/B.
DEFOG RelayOn engine room No. 2 R/B.
D-IG1 RelayOn driver side J/B.
EFI MAIN RelayOn engine room No. 1 R/B.
FAN RelayOn fusible link block.
F/PMP RelayOn engine room No. 1 R/B.
Headlight Cleaner Control RelayBelow left headlight. (Схема №1)
HEAD LP RelayOn engine room No. 1 R/B.
IG1 RelayOn engine room No. 1 R/B.
IG2 RelayOn engine room No. 1 R/B.
Keyless BuzzerInside top of left front fender, near base of "A" pillar. (Схема №2)
L-ACC RelayOn luggage room J/B.
L-IG1 RelayOn luggage room J/B.
P-ACC RelayOn driver side J/B.
P-IG1 RelayOn driver side J/B.
Rear Sunshade Control RelayBelow center of rear speaker shelf. (Схема №5)
RR S/SHADE RelayOn luggage room J/B.
STARTER RelayOn fusible link block.
Telephone Transceiver & Speaker Relay (W/Lexus Link System)On right side of luggage compartment. (Схема №5)
Telephone Transceiver & Speaker Relay (W/O Lexus Link System)On left side of luggage compartment. (Схема №5)
VSC Warning BuzzerBehind lower left side of dash. (Схема №4)

BUZZERS, RELAYS & TIMERS LOCATION

CIRCUIT PROTECTION DEVICES

ComponentComponent Location
Driver Side J/BAt left kick panel. (Схема №3)
Engine Room No. 1 J/BOn left front of engine compartment, behind headlight. (Схема №1)
Engine Room No. 1 R/BOn left front of engine compartment, behind headlight. (Схема №1)
Engine Room No. 2 R/BOn left front of engine compartment, behind headlight. (Схема №1)
Engine Room No. 3 R/BOn left rear of engine compartment. (Схема №1)
Fusible Link BlockOn right rear of engine compartment. (Схема №1)
Luggage Room J/BOn left side of luggage compartment. (Схема №5)
Overhead J/BAt front of roof opening. (Схема №5)
Passenger Side J/BAt right kick panel. (Схема №3)

CIRCUIT PROTECTION DEVICES LOCATION

CONTROL UNITS

ComponentComponent Location
A/C Control AssemblyBehind right side of dash. (Схема №3)
Air Bag Sensor AssemblyBehind lower center of dash, on transmission tunnel. (Схема №3)
Air Suspension ECUBehind right side of dash. (Схема №3)
Clearance Sonar ECUOn left side of luggage compartment. (Схема №5)
Climate Control Seat ECU (Driver)Under right side of driver's seat.
Climate Control Seat ECU (Front Passenger)Under front passenger seat.
Cooling Fan ECUOn front center of engine compartment, on radiator support. (Схема №1)
Distance Control ECUBehind right side of dash. (Схема №3)
Driver Door ECUInside front of left front door. (Схема №5)
Driver Seat ECUBelow left side of driver's seat.
Driver Side J/B ECUAt left kick panel. (Схема №3)
Engine Control ModuleOn left front of engine compartment, in protective case. (Схема №1)
Front ControllerOn engine room No. 2 R/B.
Front Passenger Door ECUInside right front door. (Схема №5)
Gateway ECUBehind left end of dash. (Схема №3)
Headlight Beam Level Control ECUBehind right side of dash. (Схема №3)
Headlight Control ECU (Left)Behind respective headlight. (Схема №1)
Headlight Control ECU (Right)Behind respective headlight. (Схема №1)
Luggage Room J/B ECUOn left side of luggage compartment. (Схема №5)
Moon Roof Control ECUAt front of roof opening. (Схема №5)
Navigation ECUOn lower right side of luggage compartment. (Схема №5)
Passenger Side J/B ECUAt right kick panel. (Схема №3)
Power Tilt & Power Telescopic ECUBehind left side of dash. (Схема №3)
Rear A/C UnitOn left side of luggage compartment.
Rear Door ECU (Left)Inside left rear door. (Схема №5)
Rear Door ECU (Right)Inside right rear door. (Схема №5)
Rear Seat ECU (Left/Right)Behind respective rear seat back.
Shift Lock Control ECUBelow shift lever, in center console. (Схема №3)
Skid Control ECUBehind left side of dash. (Схема №3)
Stereo Component TunerOn lower right side of luggage compartment. (Схема №5)
Theft Deterrent ECUBehind upper right center of dash. (Схема №3)
Transponder Key ComputerBehind upper center of dash. (Схема №3)
Vibration Seat ECU (Left/Right)Behind respective rear seat back.

CONTROL UNITS LOCATION

MOTORS

ComponentComponent Location
AB, TRAC & VSC ActuatorOn left rear of engine compartment, near brake master cylinder.
Blower MotorBehind lower right side of dash.
Front Wiper MotorBelow left side of windshield.
Fuel Lid Opener MotorOn left side of luggage compartment, behind left rear fenderwell.
Fuel Pump & Fuel Sender (Main)Under left rear of vehicle, forward of left rear fenderwell.
Headlight Beam Level Control Actuator (Right/Left)Behind respective headlight.
Headlight Cleaner MotorBelow left headlight. (Схема №2)
Height Control CompressorOn right front of engine compartment. (Схема №2)
Luggage Compartment Door Closer MotorOn center rear of luggage compartment lid.
Shoulder Belt Anchor Motor & Position Sensor (Left)Near middle of left "B" pillar.
Shoulder Belt Anchor Motor (Right)Near middle of right "B" pillar.
Suspension Control Actuator (Left Front)On left side of engine compartment. (Схема №2)
Suspension Control Actuator (Left Rear)Near base of left "C" pillar.
Suspension Control Actuator (Right Front)On right side of engine compartment. (Схема №2)
Suspension Control Actuator (Right Rear)Near base of right "C" pillar.
Telescopic Motor & Position SensorInside base of steering column.
Throttle Control MotorOn front of engine, on throttle body. (Схема №2)
Tilt Motor & Position SensorInside base of steering column.
Vibrator (Left/Right)Behind respective rear seat back.
Washer MotorOn washer fluid reservoir, below left headlight. (Схема №2)

MOTORS LOCATION

SENDING UNITS & SENSORS

ComponentComponent Location
A/C Ambient Temperature SensorBehind left side of bumper fascia. (Схема №2)
Acceleration SensorOn left side of luggage compartment, behind left rear fenderwell.
Accel Position SensorBehind left center of dash. (Схема №4)
A/C Magnetic Clutch & Lock SensorOn right side of engine.
A/C Pressure SensorOn left front of engine compartment.
A/C Room Temperature SensorBehind left center of dash. (Схема №4)
A/C Solar Sensor (Rear)Near center of rear speaker shelf, at base of rear window.
Air Bag Sensor (Left Front)On left front of engine compartment. (Схема №2)
Air Bag Sensor (Right Front)On right front of engine compartment. (Схема №2)
Automatic Light Control Sensor & A/C Solar Sensor (Front)Behind upper center of dash. (Схема №4)
Camshaft Position SensorOn front of left cylinder head.
Crankshaft Position SensorOn left front of engine.
Duct Sensor (Driver)Behind upper left side of dash. (Схема №4)
Duct Sensor (Passenger)Behind upper right side of dash. (Схема №4)
Engine Coolant Temperature SensorOn front center of engine.
Engine Oil Level SensorOn left center of engine. (Схема №2)
Exhaust Gas SensorOn right side of engine, on exhaust system.
Fuel Pump & Fuel Sender (Main)Under left rear of vehicle, forward of left rear fenderwell.
Fuel Sender (Sub)Under right rear of vehicle, forward of right rear fenderwell.
Heated Oxygen Sensor (Bank 1 Sensor 1)On exhaust system, on left side of engine.
Heated Oxygen Sensor (Bank 1 Sensor 2)On exhaust system, below vehicle.
Heated Oxygen Sensor (Bank 2 Sensor 1)On exhaust system, on right side of engine.
Heated Oxygen Sensor (Bank 2 Sensor 2)On exhaust system, below vehicle.
Height Control Sensor (Left Front)Inside left front fenderwell, attached to suspension control arm. (Схема №2)
Height Control Sensor (Rear)Under center rear of vehicle.
Height Control Sensor (Right Front)Inside right front fenderwell, attached to suspension control arm. (Схема №2)
Knock Sensor (Left)On left side of engine.
Knock Sensor (Right)On right side of engine.
Laser Radar SensorBehind right side of front bumper fascia. (Схема №2)
Magnetic Field SensorBehind center of dash. (Схема №4)
Mass Airflow MeterOn right side of engine compartment, near air box.
O/D Direct Clutch Speed SensorOn left side of transmission. (Схема №2)
Rain SensorNear top center of windshield.
Shoulder Belt Anchor Motor & Position Sensor (Left)Near middle of left "B" pillar.
Shoulder Belt Anchor Motor & Position Sensor (Right)Near middle of right "B" pillar.
Side Air Bag Sensor (Left Front)Near base of left "B" pillar.
Side Air Bag Sensor (Left Rear)Near lower rear of left rear door opening.
Side Air Bag Sensor (Right Front)Near base of right "B" pillar.
Side Air Bag Sensor (Right Rear)Near lower rear of right rear door opening.
Steering SensorInside top of steering column. (Схема №4)
Telescopic Motor & Position SensorInside base of steering column. (Схема №4)
Throttle Position SensorOn throttle body. (Схема №2)
Tilt Motor & Position SensorInside base of steering column. (Схема №4)
Ultrasonic Sensor (Front) (6)Behind front bumper fascia.
Ultrasonic Sensor (Rear) (4)Behind rear bumper fascia.
Vapor Pressure SensorBelow right rear of vehicle.
Vehicle Speed SensorOn transmission. (Схема №2)
VVT Sensor (Left)On left side of engine. (Схема №2)
VVT Sensor (Right)On right side of engine. (Схема №2)
Washer Level SensorOn washer fluid reservoir, below left headlight. (Схема №2)
Yaw Rate SensorBelow rear of center console. (Схема №4)

SENDING UNITS & SENSORS LOCATION

SOLENOIDS & SOLENOID VALVES

ComponentComponent Location
A/C SolenoidOn right side of engine.
Camshaft Timing Oil Control Valve (Left)On front of left cylinder head. (Схема №2)
Camshaft Timing Oil Control Valve (Right)On front of right cylinder head. (Схема №2)
Electronically Controlled Transmission SolenoidOn left side of transmission.
Front Height Control ValveOn right front of engine compartment. (Схема №2)
PPS SolenoidOn left front of engine compartment. (Схема №2)
Rear Height Control ValveNear front of engine compartment.
Tension Reducer Solenoid (Left/Right)Near base of respective "B" pillar.
VSV (ACIS)On right rear of engine. (Схема №2)
VSV (Canister Closed Valve)On right side of engine compartment. (Схема №2)
VSV (EVAP)On left rear of engine. (Схема №2)
VSV (Pressure Switching Valve)Below right rear of vehicle.

SOLENOIDS & SOLENOID VALVES LOCATION

SWITCHES

ComponentComponent Location
Brake Fluid Level Warning SwitchOn brake master cylinder reservoir.
Brake Pedal Load Sensing SwitchOn brake pedal bracket, above brake pedal. (Схема №4)
Buckle Switch (4)Inside of respective seat belt buckle.
Engine Hood Courtesy SwitchNear hood latch, on front center of engine compartment.
Oil Pressure SwitchOn lower left front of engine. (Схема №2)
Parking Brake SwitchBehind left end of dash, on parking brake mechanism. (Схема №4)
Park/Neutral Position SwitchOn right side of transmission. (Схема №2)
Stoplight SwitchAbove brake pedal, on bracket.

SWITCHES LOCATION

MISCELLANEOUS

ComponentComponent Location
Data Link Connector (DLC) No. 3Below left side of dash. (Схема №4)
Fuel Pump ResistorOn left side of engine compartment.
Ignition Coil & Ignitor (8)Above each respective spark plug.
Junction Connectors No. 1, 2, 3, 4, 5 & 6Near engine control module, in protective case.
Junction Connector No. 7Below engine room No. 1 J/B and engine room No. 1 R/B.
Junction Connectors No. 8 & 9Behind left end of dash.
Junction Connectors No. 10, 11, 12, 13, 14, 15, 16 & 17Behind upper center of dash.
Junction Connectors No. 18, 19 & 20Behind upper right side of dash.
Junction Connector No. 21Forward of left rear fenderwell.
Junction Connectors No. 22 & 23Rearward of left rear fenderwell.
Junction Connectors No. 24 & 25On left rear of luggage compartment lid.
Junction Connector No. 26Near center of rear speaker shelf, at base of rear window.
Junction Connector No. 27Forward of right rear fenderwell.
Junction Connectors No. 28, 29 & 30Rearward of right rear fenderwell.
Junction Connector No. 31Behind left rear seat back.
Junction Connector No. 32Behind right rear seat back.
Noise FilterOn luggage room J/B.
Noise Filter (Ignition) (Left Bank)On left rear of engine. (Схема №2)
Noise Filter (Ignition) (Right Bank)On right front of engine. (Схема №2)
Noise Filter (Rear Window Defogger)Behind left headlight. (Схема №2)
Pretensioner (Front) (Left/Right)Near base of respective "B" pillar
Pretensioner (Rear) (Left/Right)Near base of respective "C" pillar.
Stereo Component AmplifierOn right side of luggage compartment, behind trim. (Схема №5)
Telephone Transceiver & Speaker Relay (W/Lexus Link System)On right side of luggage compartment. (Схема №5)
Telephone Transceiver & Speaker Relay (W/O Lexus Link System)On left side of luggage compartment. (Схема №5)
Theft Deterrent HornOn right rear of engine compartment. (Схема №2)
Transponder Key AmplifierOn right side of steering column. (Схема №3)

MISCELLANEOUS LOCATION

CONNECTORS

ComponentComponent Location
BA1 (6 Pin)At left "B" pillar.
BA2 (10 Pin)At left "B" pillar.
BB1 (6 Pin)At right "B" pillar.
BB2 (10 Pin)At right "B" pillar.
BC1 (9 Pin)At left rear floor partition panel.
BD1 (10 Pin)At left lower back panel.
BE1 (17 Pin)At right lower back panel.
BE2 (Gray, 22 Pin)At right lower back panel.
BF1 (17 Pin)Under left front seat.
BG2 (17 Pin)Under right front seat.
BH1 (20 Pin)Under left rear seat.
BI1 (20 Pin)Under right rear seat.
EA1 (Black, 8 Pin)Under left headlight. (Схема №7)
EB1 (14 Pin)Inside ECU box. (Схема №7)
EB2 (10 Pin)Inside ECU box. (Схема №7)
EC1 (3 Pin)Behind intake manifold. (Схема №7)
IA1 (17 Pin)At left kick panel. (Схема №6)
IB1 (Yellow, 2 Pin)At left side of firewall. (Схема №6)
IB2 (1 Pin)At left side of firewall. (Схема №6)
IB3 (Gray, 22 Pin)At left side of firewall. (Схема №6)
IB4 (Black, 13 Pin)At left side of firewall. (Схема №6)
IC1 (11 Pin)At left side of firewall. (Схема №6)
IC2 (10 Pin)At left side of firewall. (Схема №6)
IC3 (Gray, 18 Pin)At left side of firewall. (Схема №6)
ID1 (14 Pin)At left side of firewall. (Схема №6)
IE1 (2 Pin)At left kick panel. (Схема №6)
IF1 (22 Pin)At right side of shift lever. (Схема №6)
IF2 (14 Pin)At left side of shift lever. (Схема №6)
IG1 (11 Pin)At right side of firewall. (Схема №6)
IG2 (Gray, 22 Pin)At right side of firewall. (Схема №6)
IH1 (Yellow, 2 Pin)At right side of firewall. (Схема №6)
IH2 (14 Pin)At right side of firewall. (Схема №6)
IH3 (1 Pin)At right side of firewall. (Схема №6)
II1 (22 Pin)At right side of firewall. (Схема №6)
II2 (9 Pin)At right side of firewall. (Схема №6)
IJ1 (17 Pin)At right kick panel. (Схема №6)

CONNECTORS LOCATION

GROUNDS

ComponentComponent Location
BLAt right rear floor partition panel. (Схема №5)
BMAt left rear quarter panel. (Схема №5)
BNAt right rear floor partition panel. (Схема №5)
BOAt left rear quarter panel. (Схема №5)
BPAt left rear seat back.
BQAt right rear seat back.
EAAt right radiator side support. (Схема №7)
EBUnder fusible link block. (Схема №7)
ECAt left radiator side support. (Схема №7)
EDAt top left of firewall. (Схема №7)
EEAt right side of cylinder head. (Схема №7)
EFAt left side of cylinder head. (Схема №7)
IGAt left side of dash. (Схема №6)
IHAt right side of shift lever. (Схема №6)
IIAt right side of shift lever. (Схема №6)
IJAt right dash brace. (Схема №6)
IKAt right side of firewall. (Схема №6)
IRUnder right front seat. (Схема №6)

GROUNDS LOCATION