Contents Wiring diagrams Section: Electrical Component Locations All sections

Electrical Component Locator: Other Lexus IS I

Buzzers, Relays & Timers

ComponentComponent Location
ABS MTR RelayOn engine room No. 2 R/B.
ABS SOL RelayOn engine room No. 2 R/B.
A/C COMP RelayOn engine room No. 3 R/B.
CIRCUIT OPENING RelayOn engine room No. 1 R/B.
Daytime Running Light Relay (Main)Behind left end of dash. (Схема №3)
Daytime Running Light Relay No. 3On right front of engine compartment, beside air box. (Схема №1)
Daytime Running Light Relay No. 4On right front of engine compartment, beside air box. (Схема №1)
DIMMER RelayOn engine room No. 3 R/B.
EFI RelayOn engine room No. 2 R/B.
FAN No. 1 RelayOn engine room No. 3 R/B.
FAN No. 2 RelayOn engine room No. 3 R/B.
FAN No. 3 RelayOn engine room No. 3 R/B.
FLSH RelayOn driver side J/B.
FR FOG RelayOn passenger side J/B.
FUEL PMP RelayOn engine room No. 3 R/B.
Headlight Cleaner Control RelayBelow left headlight. (Схема №1)
HEAD LP RelayOn engine room No. 1 R/B.
HORN RelayOn engine room No. 2 R/B.
HTR RelayOn passenger side J/B.
Keyless BuzzerNear top of left front wheelwell, inside fender. (Схема №2)
Luggage Compartment Door Opener RelayOn left side of luggage compartment, near fuel filler door. (Схема №5)
MIR HTR RelayOn passenger side J/B.
P/W RelayOn passenger side J/B.
RR DEF RelayOn driver side J/B.
STARTER RelayOn engine room No. 1 R/B.
TAIL RelayOn driver side J/B.
Telephone Transceiver & Speaker RelayOn left side of luggage compartment, near fuel filler door. (Схема №5)

Buzzers, Relays & Timers Location

Circuit Protection Devices

ComponentComponent Location
Driver Side J/BBehind lower left end of dash. (Схема №3)
Engine Room No. 1 R/BOn right rear of engine compartment. (Схема №1)
Engine Room No. 2 R/BOn right rear of engine compartment. (Схема №1)
Engine Room No. 3 R/BOn left side of engine compartment. (Схема №1)
Passenger Side J/BBehind lower right end of dash. (Схема №3)

Circuit Protection Devices Location

Control Units

ComponentComponent Location
ABS & Traction ECUBehind left end of dash. (Схема №3)
Blower Motor ControllerBehind upper right center of dash. (Схема №4)
Body ECUBehind lower left end of dash, integral with driver side J/B. (Схема №3)
Center Air Bag Sensor AssemblyBelow center of dash, on transmission tunnel. (Схема №3)
Engine Control ModuleOn left front of engine compartment, in protective case. (Схема №1)
Headlight Beam Level Control ECUBehind left end of dash. (Схема №3)
Headlight Control ECU (Left)Behind left headlight assembly. (Схема №1)
Headlight Control ECU (Right)Behind right headlight assembly. (Схема №1)
Moon Roof Control ECUOn front center of roof. (Схема №5)
Shift Lock Control ECUBelow right side of transmission shift lever. (Схема №3)
Theft Deterrent ECUBehind left end of dash. (Схема №3)
Wireless Door Lock Control ReceiverBelow center of rear window, on speaker shelf. (Схема №5)

Control Units Location

Motors

ComponentComponent Location
ABS & Traction ActuatorOn right side of engine compartment, forward of strut tower.
Air Inlet Control Servo MotorBehind upper right side of dash. (Схема №4)
Air Mix Control Servo MotorBehind upper right center of dash. (Схема №4)
Air Vent Mode Control Servo MotorBehind upper right center of dash. (Схема №4)
Blower MotorBehind lower right end of dash. (Схема №4)
Front Wiper MotorIn engine compartment, below lower left side of windshield. (Схема №2)
Fuel Pump & SenderUnder left side of vehicle, forward of left fenderwell.
Headlight Beam Level Control Actuator (Left)Behind left headlight. (Схема №2)
Headlight Beam Level Control Actuator (Right)Behind right headlight. (Схема №2)
Headlight Cleaner MotorBelow left headlight. (Схема №2)
Throttle Control MotorOn throttle body. (Схема №2)
Washer MotorBelow left headlight. (Схема №2)

Motors Location

Sending Units & Sensors

ComponentComponent Location
A/C Ambient Temperature SensorBehind left center of front bumper fascia. (Схема №2)
Accel Position SensorOn center rear of engine, on throttle body.
A/C Magnetic Clutch & Lock SensorOn left front of engine, on A/C compressor.
A/C Room Temperature SensorBehind lower left center of dash. (Схема №4)
A/C Solar SensorOn top left side of dash. (Схема №4)
A/C ThermistorBehind upper left center of dash. (Схема №4)
Air Bag Sensor (Left Front)On left side of radiator support.
Air Bag Sensor (Right Front)On right side of radiator support. (Схема №2)
Automatic Light Control SensorOn top left side of dash. (Схема №3)
Buckle Switch (Right) & Seat Belt Warning Occupant Detection SensorInside of right front seat belt buckle.
Camshaft Position SensorOn left rear of cylinder head.
Crankshaft Position SensorOn right side of engine.
Engine Coolant Temperature SensorOn left front of engine.
Engine Oil Level SensorOn lower left front of engine. (Схема №2)
Fuel Pump & SenderUnder left side of vehicle, forward of left fenderwell.
Fuel Sender (Sub)Under right side of vehicle, forward of right fenderwell.
Heated Oxygen Sensor (Bank 1 Sensor 1)On right side of engine, on exhaust system.
Heated Oxygen Sensor (Bank 1 Sensor 2)On right side of engine, on exhaust system.
Heated Oxygen Sensor (Bank 2 Sensor 1)On right side of engine, on exhaust system.
Heated Oxygen Sensor (Bank 2 Sensor 2)On right side of engine, on exhaust system.
Height Control Sensor (Left Front)On left front of engine compartment. (Схема №2)
Height Control Sensor (Left Rear)Under left rear of vehicle, attached to suspension control arm.
Intake Air TemperatureBuilt into MAF, On right side of engine compartment, behind air box. (Схема №2)
Knock Sensor 1On left front of engine block. (Схема №2)
Knock Sensor 2On left rear of engine block. (Схема №2)
Light Failure SensorOn left side of luggage compartment. (Схема №5)
Mass Airflow MeterOn right side of engine compartment, behind air box. (Схема №2)
O/D Direct Clutch Speed SensorOn left side of transmission. (Схема №2)
Power Steering Oil Pressure SensorOn left front of engine. (Схема №2)
Side Air Bag Sensor (Left/Right)At base of respective "B" pillar.
Throttle Position SensorOn throttle body. (Схема №2)
Vapor Pressure SensorUnder center rear of vehicle.
Vehicle Speed Sensor (Electronically Controlled Transmission)On left rear of transmission. (Схема №2)

Sending Units & Sensors Location

Solenoids & Solenoid Valves

ComponentComponent Location
A/C Magnetic Clutch & Lock SensorOn left front of engine, on A/C compressor.
Camshaft Timing Oil Control ValveOn left front of cylinder head.
Electronically Controlled Transmission SolenoidOn left side of transmission. (Схема №2)
VSV (ACIS)On left side of engine. (Схема №2)
VSV (Canister Closed Valve)On right front of engine. (Схема №2)
VSV (EVAP)On top rear of engine. (Схема №2)
VSV (Pressure Switching Valve)Under center rear of vehicle.

Solenoids & Solenoid Valves Location

Switches

ComponentComponent Location
A/C Triple Pressure SwitchOn left front of engine compartment, behind bumper fascia.
Brake Fluid Level Warning SwitchOn brake fluid reservoir, on top of brake master cylinder.
Buckle Switch (Left)Inside of left front seat belt buckle.
Buckle Switch (Right) & Seat Belt Warning Occupant Detection SensorInside of right front seat belt buckle.
Engine Hood Courtesy SwitchOn front center of engine compartment, near hood latch.
Engine Oil Pressure SwitchOn left front of engine. (Схема №2)
Parking Brake SwitchAt base of parking brake lever. (Схема №4)
Park/Neutral Position SwitchOn right side of transmission. (Схема №2)
Stoplight SwitchAbove brake pedal, on bracket. (Схема №4)
Water Temperature SwitchOn right side of radiator. (Схема №2)

Switches Location

Miscellaneous

ComponentComponent Location
Antenna AmplifierBehind center of dash. (Схема №4)
Data Link Connector (DLC) No. 1On left front of engine compartment, forward of engine room No. 3 R/B. (Схема №2)
Data Link Connector (DLC) No. 3Behind lower left side of dash. (Схема №4)
Daytime Running Light ResistorOn right side of engine compartment, on strut tower. (Схема №2)
Diode (A/C)Behind right end of dash. (Схема №4)
Diode (Headlight Cleaner)Behind upper left side of dash.
Diode (Luggage Compartment Light)On rear speaker shelf.
Fuel Pump ResistorOn left side of engine compartment, on strut tower. (Схема №2)
IgnitorOn left side of engine compartment, on strut tower. (Схема №2)
Junction Connectors No. 1, 2, 3 & 4On left side of engine compartment, near engine control module.
Junction Connector No. 5Behind left end of dash, above driver side J/B.
Junction Connector No. 6Behind left side of dash, forward of instrument cluster.
Junction Connectors No. 7, 8, 9 & 10Behind upper right side of dash.
Junction Connector No. 11In left front door.
Junction Connectors No. 12 & 13Above left rear fenderwell.
Junction Connectors No. 14 & 15On left side of luggage compartment, behind left fenderwell.
Junction Connector No. 16Above right rear fenderwell.
Noise Filter (DEF CDS)On driver side J/B.
Noise Filter (Ignition)On left side of engine. (Схема №2)
Noise Filter (Rear Window Defogger)Near base of right "C" pillar.
Noise Filter (Stoplight)Above left rear fenderwell.
Pretensioner (Left/Right)At base of respective "B" pillar.
Stereo Component AmplifierBehind right end of dash. (Схема №3)
Telephone MicrophoneBehind left end of dash, above instrument panel J/B. (Схема №4)
Telephone Transceiver & Speaker RelayOn left side of luggage compartment, near fuel filler door. (Схема №5)
Theft Deterrent HornOn left side of engine compartment, on strut tower. (Схема №2)
Transponder Key AmplifierOn steering column, near ignition switch. (Схема №3)

Miscellaneous Location

Connectors

ComponentComponent Location
BA1 (12 Pin)At left "B" pillar.
BB1 (12 Pin)At right "B" pillar.
BC2 (18 Pin)At right rear floor partition panel.
BD1 (3 Pin)At lower left back panel.
BE1 (Gray, 2 Pin)Near left license light.
BF1 (Gray, 2 Pin)Near right license light.
BG1 (6 Pin)Under left front seat.
BH1 (6 Pin)Under right front seat.
BJ1 (4 Pin)At upper left side of back panel.
BJ2 (Blue, 10 Pin)At upper left side of back panel.
BK1 (Blue, 12 Pin)At lower left side of back panel.
BK2 (3 Pin)At lower left side of back panel.
EA1 (Gray, 10 Pin)Inside ECU box. (Схема №6)
EA2 (Blue, 9 Pin)Inside ECU box. (Схема №6)
EA3 (11 Pin)Inside ECU box. (Схема №6)
IA1 (Blue, 20 Pin)Near left side J/B. (Схема №7)
IA3 (20 Pin)Near left side J/B. (Схема №7)
IB1 (Gray, 22 Pin)Near left side J/B. (Схема №7)
IB3 (Gray, 20 Pin)Near left side J/B. (Схема №7)
IC1 (8 Pin)Near left side J/B. (Схема №7)
ID2 (17 Pin)At left kick panel. (Схема №7)
IE1 (5 Pin)At left side of dash. (Схема №7)
IF1 (14 Pin)At left side of blower unit. (Схема №7)
IF2 (3 Pin)At left side of blower unit. (Схема №7)
IG1 (Blue, 17 Pin)Near right side J/B. (Схема №7)
IG2 (Yellow, 4 Pin)Near right side J/B. (Схема №7)
IG3 (10 Pin)Near right side J/B. (Схема №7)
IH1 (22 Pin)Near right side J/B. (Схема №7)
IH3 (Gray, 14 Pin)Near right side J/B. (Схема №7)
IH4 (Gray, 14 Pin)Near right side J/B. (Схема №7)
II1 (20 Pin)At right kick panel. (Схема №7)
IJ1 (4 Pin)At left side of dash. (Схема №7)

Connectors Location

Grounds

ComponentComponent Location
BJAt left front floor panel. (Схема №5)
BKAt right front floor panel. (Схема №5)
BLAt left rear quarter panel. (Схема №5)
BM (Wagon)At left upper side of back panel.
BN (Wagon)At right upper side of back panel.
EAAt front of intake manifold. (Схема №6)
EBAt center side of intake manifold. (Схема №6)
ECAt left fender apron. (Схема №6)
IDAt left side of firewall. (Схема №7)
IEAt left front floor panel center. (Схема №7)
IFAt right front panel center. (Схема №7)
IGAt right dash reinforcement. (Схема №7)
IHAt right side of firewall. (Схема №7)

Grounds Location