2003 LEXUS LS430 Factory Repair Manual

boot seat memory towing capacity technical specifications air conditioning diagnostic menu

Page 2633 of 4500

LEXUS LS430 2003 Factory Repair Manual Control)
Power Seat Position Sensor (Driver's Seat Cushion
Control)In lower left side of driver's seat cushion. See Fig.
31 .
Power Seat Position Sensor (Driver's Seat Front
Vertical Co

Control)
Power Seat Position Sensor (Driver's Seat Cushion
Control)In lower left side of driver's seat cushion. See Fig.
31 .
Power Seat Position Sensor (Driver's Seat Front
Vertical Control)At lower right side of driver's seat cushion. See Fig.
31 .
Power Seat Position Sensor (Driver's Seat Lifter
Control)In driver's seat assembly. See Fig. 31 .
Power Seat Position Sensor (Driver's Seat Reclining
Control)In lower left side of driver's seat. See Fig. 31 .
Power Seat Position Sensor (Driver's Seat Slide
Control)Lower left side of driver's seat. See Fig. 31 .
Power Seat Position Sensor (Rear Passenger's LH
Seat Slide Control)In left side of rear seat. See Fig. 32 .
Power Seat Position Sensor (Rear Passenger's RH
Seat Slide Control)In right side of rear seat. See Fig. 32 .
Rain SensorNear top center of windshield. See Fig. 29 .
Side Air Bag Sensor Front LHNear base of left "B" pillar. See Fig. 30 .
Side Air Bag Sensor Front RHNear base of right "B" pillar. See Fig. 30 .
Side Air Bag Sensor Rear LHNear lower rear of left rear door opening. See Fig.
30 .
Side Air Bag Sensor Rear RHNear lower rear of right rear door opening. See Fig.
30 .
Smoke SensorCenter rear of vehicle. See Fig. 30 .
Steering SensorInside top of steering column. See Fig. 17 .
Telescopic Motor & Position SensorInside base of steering column. See Fig. 2 .
Throttle Position Sensor & MotorOn throttle body. See Fig. 15 .
Tilt Motor & Position SensorInside base of steering column. See Fig. 2 .
Turbine Speed SensorIn transmission. See Fig. 15 .
Ultrasonic Sensor (Front Left)Behind front bumper fascia. See Fig. 15 .
Ultrasonic Sensor (Front Left Center)Behind front bumper fascia. See Fig. 15 .
Ultrasonic Sensor (Front Left Side)Behind front bumper fascia. See Fig. 15 .
Ultrasonic Sensor (Front Right)Behind front bumper fascia. See Fig. 15 .
Ultrasonic Sensor (Front Right Center)Behind front bumper fascia. See Fig. 15 .
Ultrasonic Sensor (Front Right Side)Behind front bumper fascia. See Fig. 15 .
Ultrasonic Sensor (Rear Left)Behind rear bumper fascia. See Fig. 30 .
Ultrasonic Sensor (Rear Left Center)Behind rear bumper fascia. See Fig. 30 .
Ultrasonic Sensor (Rear Right)Behind rear bumper fascia. See Fig. 30 .
Ultrasonic Sensor (Rear Right Center)Behind rear bumper fascia. See Fig. 30 .
Vapor Pressure SensorBelow right rear of vehicle. See Fig. 30 .
Vehicle Speed SensorOn transmission. See Fig. 15 .
VVT Sensor LHOn left side of engine. See Fig. 15 .
VVT Sensor RHOn right side of engine. See Fig. 15 .

Page 2634 of 4500

LEXUS LS430 2003 Factory Repair Manual SOLENOIDS & SOLENOID VALVES LOCATION
SWITCHES LOCATION
Washer Level SensorOn washer fluid reservoir, below left headlight. See
Fig. 15
.
Yaw Rate SensorBelow rear of center console. See Fig. 18 .

SOLENOIDS & SOLENOID VALVES LOCATION
SWITCHES LOCATION
Washer Level SensorOn washer fluid reservoir, below left headlight. See
Fig. 15
.
Yaw Rate SensorBelow rear of center console. See Fig. 18 .
ComponentLocation
Camshaft Timing Oil Control Valve LHOn front of left cylinder head. See Fig. 12 .
Camshaft Timing Oil Control Valve RHOn front of right cylinder head. See Fig. 12 .
Electronically Controlled Transmission SolenoidOn left side of transmission. See Fig. 12 .
Front Height Control ValveOn right front of engine compartment. See Fig. 13 .
Heated Control Exhaust ValveRight front of vehicle, behind bumper. See Fig. 13 .
PPS SolenoidOn left front of engine compartment. See Fig. 15 .
Rear Height Control ValveNear front of engine compartment. See Fig. 29 .
Rear Magnetic ValveIn rear luggage compartment. See Fig. 29 .
Tension Reducer Solenoid LHNear base of left "B" pillar. See Fig. 30 .
Tension Reducer Solenoid RHNear base of left "B" pillar. See Fig. 30 .
VSV (ACIS)On right rear of engine. See Fig. 15 .
VSV (Canister Closed Valve)On right side of engine compartment. See Fig. 15 .
VSV (EVAP)On left rear of engine. See Fig. 15 .
VSV (Pressure Switching Valve)Below right rear of vehicle. See Fig. 30 .
ComponentLocation
Brake Fluid Level Warning SwitchOn brake master cylinder reservoir. See Fig. 12 .
Brake Pedal Load Sensing SwitchOn brake pedal bracket, above brake pedal. See Fig.
2 .
Buckle SW Front LHInside of left front seat belt buckle. See Fig. 31 .
Buckle SW Front RHInside of right front seat belt buckle. See Fig. 31 .
Climate Control Seat SW (Rear)In rear seat assembly. See Fig. 32 .
Door Courtesy SW Front LHAt left "B" pillar. See Fig. 19 .
Door Courtesy SW Front RHAt right "B" pillar. See Fig. 19 .
Door Courtesy SW Rear LHAt left "C" pillar. See Fig. 19 .
Door Courtesy SW Rear RHAt right "C" pillar. See Fig. 19 .
Door Key Lock Motor & Door Unlock Detection
SW Front RHIn right front door. See Fig. 19 .
Door Key Lock & Unlock SW & Door Lock Motor
& Door Unlock Detection SW Front LHIn driver's door. See Fig. 19 .
Door Lock Motor & Door Unlock Detection SW

Page 2635 of 4500

LEXUS LS430 2003 Factory Repair Manual MISCELLANEOUS LOCATION
Rear LHIn left rear door. See Fig. 19 .
Door Lock Motor & Door Unlock Detection SW
Rear RHIn right rear door. See Fig. 19 .
Engine Hood Courtesy SWNear hood latch, on front ce

MISCELLANEOUS LOCATION
Rear LHIn left rear door. See Fig. 19 .
Door Lock Motor & Door Unlock Detection SW
Rear RHIn right rear door. See Fig. 19 .
Engine Hood Courtesy SWNear hood latch, on front center of engine
compartment. See Fig. 12
.
Head Rest Limit SW Rear LHIn rear seat assembly. See Fig. 32 .
Head Rest Limit SW Rear RHIn rear seat assembly. See Fig. 32 .
Luggage Compartment Door Key Unlock SWIn luggage compartment. See Fig. 28 .
Luggage Electrical Key SWIn luggage compartment decklid. See Fig. 28 .
Oil Pressure SwitchOn lower left front of engine. See Fig. 15 .
Parking Brake SwitchBehind left end of dash, on parking brake
mechanism. See Fig. 17
.
Park/Neutral Position SwitchOn right side of transmission. See Fig. 15 .
Power Seat Control SW (Rear Seat)Left side of rear seat. See Fig. 32 .
Pressure SwitchLower left side of dash. See Fig. 17 .
Rear Armrest Courtesy SWIn rear seat. See Fig. 32 .
Rear Sunshade SW (Rear)In center of rear seat. See Fig. 32 .
Stoplight SwitchAbove brake pedal, on bracket. See Fig. 18 .
ComponentLocation
A/C AmplifierIn luggage compartment. See Fig. 4 .
Airbag Squib (Front Passenger Airbag Assembly)Right side of dash. See Fig. 2 .
Airbag Squib (Steering Wheel Pad)In steering wheel. See Fig. 2 .
Curtain Shield Airbag Squib LHLeft "C" pillar. See Fig. 19 .
Curtain Shield Airbag Squib RHRight "C" pillar. See Fig. 19 .
Data Link Connector 3Below left side of dash. See Fig. 16 .
Door Oscillator Front LHIn left front door. See Fig. 19 .
Door Oscillator Front RHIn right front door. See Fig. 19 .
Door Oscillator Rear LHIn left rear door. See Fig. 19 .
Door Oscillator Rear RHIn right rear door. See Fig. 19 .
GeneratorRight front of engine. See Fig. 13 .
Horn (High)On center radiator support. See Fig. 13 .
Horn (Low)On center radiator support. See Fig. 13 .
Ignition Coil & Ignitor No. 1Above No. 1 spark plug. See Fig. 14 .
Ignition Coil & Ignitor No. 2Above No. 2 spark plug. See Fig. 14 .
Ignition Coil & Ignitor No. 3Above No. 3 spark plug. See Fig. 14 .
Ignition Coil & Ignitor No. 4Above No. 4 spark plug. See Fig. 14 .
Ignition Coil & Ignitor No. 5Above No. 5 spark plug. See Fig. 14 .
Ignition Coil & Ignitor No. 6Above No. 6 spark plug. See Fig. 14 .

Page 2636 of 4500

LEXUS LS430 2003 Factory Repair Manual Ignition Coil & Ignitor No. 7Above No. 7 spark plug. See Fig. 14 .
Ignition Coil & Ignitor No. 8Above No. 8 spark plug. See Fig. 14 .
Injector No. 1Left side of intake manifold. See Fig. 14 .
Injector

Ignition Coil & Ignitor No. 7Above No. 7 spark plug. See Fig. 14 .
Ignition Coil & Ignitor No. 8Above No. 8 spark plug. See Fig. 14 .
Injector No. 1Left side of intake manifold. See Fig. 14 .
Injector No. 2Right side of intake manifold. See Fig. 14 .
Injector No. 3Left side of intake manifold. See Fig. 14 .
Injector No. 4Right side of intake manifold. See Fig. 14 .
Injector No. 5Left side of intake manifold. See Fig. 14 .
Injector No. 6Right side of intake manifold. See Fig. 14 .
Injector No. 7Left side of intake manifold. See Fig. 14 .
Injector No. 8Right side of intake manifold. See Fig. 14 .
Junction Connector No. 1Left front of engine compartment. See Fig. 14 .
Junction Connector No. 2Left front of engine compartment. See Fig. 14 .
Junction Connector No. 3Left front of engine compartment. See Fig. 14 .
Junction Connector No. 4Left front of engine compartment. See Fig. 14 .
Junction Connector No. 7Below engine room No. 1 J/B & engine room No. 1
R/B. See Fig. 14
.
Junction Connector No. 8Behind left end of dash. See Fig. 16 .
Junction Connector No. 9Behind left end of dash. See Fig. 16 .
Junction Connector No. 21Forward of left rear fenderwell. See Fig. 28 .
Junction Connector No. 26Near center of rear speaker shelf, at base of rear
window. See Fig. 28
.
Junction Connector No. 27Forward of right rear fenderwell. See Fig. 28 .
Junction Connector No. 31Behind left rear seat back. See Fig. 32 .
Junction Connector No. 33Left front of engine compartment. See Fig. 14 .
Junction Connector No. 34Left front of engine compartment. See Fig. 14 .
Junction Connector No. 35Left side of dash. See Fig. 16 .
Junction Connector No. 49Right rear of vehicle. See Fig. 28 .
Junction Connector No. 50Right rear of vehicle. See Fig. 28 .
Junction Connector No. 51 & 52Right rear of vehicle. See Fig. 28 .
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& 17Behind upper center of dash. See Fig. 16 .
Junction Connectors No. 18Behind upper right side of dash. See Fig. 16 .
Junction Connectors No. 22 & 23Rearward of left rear fenderwell. See Fig. 28 .
Junction Connectors No. 24 & 25On left rear of luggage compartment lid. See Fig.
28 .
Junction Connectors No. 28, 29 & 30Rearward of right rear fenderwell. See Fig. 28 .
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43Center of dash. See Fig. 16 .
Junction Connectors No. 44, 45, 46, 47, 48Right side of dash. See Fig. 16 .
Knee Airbag Squib LHLower left side of dash. See Fig. 17 .
Knee Airbag Squib RHLower right side of dash. See Fig. 17 .
Luggage Oscillator (Inner)Left rear of luggage compartment. See Fig. 28 .

Page 2637 of 4500

LEXUS LS430 2003 Factory Repair Manual CONNECTORS LOCATION
Luggage Oscillator (Outer)Behind right side of rear bumper. See Fig. 28 .
Noise FilterOn luggage room J/B. See Fig. 11 .
Noise Filter (Ignition) (Left Bank)On left rear of engine.

CONNECTORS LOCATION
Luggage Oscillator (Outer)Behind right side of rear bumper. See Fig. 28 .
Noise FilterOn luggage room J/B. See Fig. 11 .
Noise Filter (Ignition) (Left Bank)On left rear of engine. See Fig. 15 .
Noise Filter (Ignition) (Right Bank)On right front of engine. See Fig. 15 .
Noise Filter (Rear Window Defogger)Behind left headlight. See Fig. 15 .
Pretensioner Front LHNear base of left "B" pillar. See Fig. 29 .
Pretensioner Front RHNear base of right "B" pillar. See Fig. 29 .
Pretensioner Rear LHNear base of left "C" pillar. See Fig. 29 .
Pretensioner Rear RHIn right rear door. See Fig. 29 .
Rear Window DefoggerAt rear window. See Fig. 29 .
RheostatLeft side of dash. See Fig. 18 .
Room Oscillator (Front)In center console. See Fig. 18 .
Room Oscillator (Rear)Center of passenger compartment. See Fig. 29 .
Seat Heater Front LHIn left front seat. See Fig. 31 .
Seat Heater Front RHIn right front seat. See Fig. 31 .
Seat Heater Rear LHIn left rear seat. See Fig. 32 .
Seat Heater Rear LHIn left side of rear seat. See Fig. 32 .
Seat Heater Rear RHIn right rear seat. See Fig. 32 .
Seat Heater Rear RHIn right side of rear seat. See Fig. 32 .
Short Connector 1Left front of engine compartment. See Fig. 15 .
Short Connector 2Left front of engine compartment. See Fig. 15 .
Short Connector 8 (Height Control)Right end of dash. See Fig. 18 .
Short Connector 9 (Height Control)Right end of dash. See Fig. 18 .
Short Connector 43Right end of dash. See Fig. 17 .
Short Connector 43Right end of dash. See Fig. 18 .
Side Airbag Squib LHIn left front seat. See Fig. 31 .
Side Airbag Squib RHIn right front seat. See Fig. 31 .
Stereo Component AmplifierOn right side of luggage compartment, behind trim.
See Fig. 4
.
Telephone Transceiver & Speaker RelayOn right side of luggage compartment. See Fig. 4 .
Theft Deterrent HornOn right rear of engine compartment. See Fig. 15 .
Transponder Key AmplifierOn right side of steering column. See Fig. 18 .
Vibrator LHIn left rear seat. See Fig. 32 .
Vibrator RHIn right rear seat. See Fig. 32 .
ComponentLocation
BA1 (White, 6 Pin)At left "B" pillar. See Fig. 23 .
BA2 (White, 10 Pin)At left "B" pillar. See Fig. 23 .

Page 2638 of 4500

LEXUS LS430 2003 Factory Repair Manual BB1 (White, 6 Pin)At right "B" pillar. See Fig. 23 .
BB2 (White, 10 Pin)At right "B" pillar. See Fig. 23 .
BC2 (White, 16 Pin)Left rear of luggage compartment. See Fig. 23 .
BD1 (White

BB1 (White, 6 Pin)At right "B" pillar. See Fig. 23 .
BB2 (White, 10 Pin)At right "B" pillar. See Fig. 23 .
BC2 (White, 16 Pin)Left rear of luggage compartment. See Fig. 23 .
BD1 (White, 10 Pin)Behind left side of rear bumper. See Fig. 23 .
BE3 (White, 16 Pin)Behind right rear bumper. See Fig. 23 .
BE4 (Gray, 22 Pin)Behind right rear bumper. See Fig. 23 .
BF2 (White, 20 Pin)Under driver's seat. See Fig. 26 .
BG3 (White, 20 Pin)Under passenger seat. See Fig. 26 .
BH2 (White, 25 Pin)Lower left side of rear seat. See Fig. 27 .
BH3 (White, 17 Pin)Lower left side of rear seat. See Fig. 27 .
BI2 (White, 25 Pin)Right rear seat bottom. See Fig. 27 .
BI3 (White, 17 Pin)Right rear seat bottom. See Fig. 27 .
BJ1 (White, 10 Pin)In left front door. See Fig. 25 .
BK1 (White, 10 Pin)In right front door. See Fig. 25 .
BL1 (White, 10 Pin)In left rear door. See Fig. 25 .
BM1 (White, 10 Pin)Right "B" pillar. See Fig. 25 .
BN1 (White, 2 Pin)Right front floor pan. See Fig. 25 .
BO1 (White, 11 Pin)Left rear of luggage compartment. See Fig. 25 .
BP1 (White, 4 Pin)Left rear of luggage compartment. See Fig. 25 .
BQ1 (White, 10 Pin)Left rear luggage compartment. See Fig. 25 .
BR1 (Gray, 3 Pin)Left rear luggage compartment. See Fig. 25 .
BS1 (White, 8 Pin)Left side of rear seat. See Fig. 27 .
BT1 (White, 20 Pin)Center of rear seat. See Fig. 27 .
BT2 (White, 10 Pin)Center rear seat. See Fig. 27 .
BU1 (White, 20 Pin)Center of rear seat. See Fig. 27 .
BV1 (White, 8 Pin)In right rear seat back. See Fig. 27 .
EA1 (Black, 8 Pin)Under left headlight. See Fig. 3 .
EB1 (White, 14 Pin)Inside ECU box. See Fig. 3 .
EB2 (White, 10 Pin)Inside ECU box. See Fig. 3 .
EC1 (White, 3 Pin)Behind intake manifold. See Fig. 3 .
EC2 (Black, 6 Pin)Center rear of engine compartment. See Fig. 3 .
ED1 (Black, 6 Pin)Right front of engine compartment. See Fig. 3 .
IA1 (White, 17 Pin)At left kick panel. See Fig. 20 .
IB1 (Yellow, 2 Pin)At left side of dash. See Fig. 20 .
IB5 (White, 18 Pin)Left end of dash. See Fig. 20 .
IB6 (White, 18 Pin)Left end of dash. See Fig. 20 .
IB7 (White, 25 Pin)Left end of dash. See Fig. 20 .
IC4 (Gray, 22 Pin)Left end of dash. See Fig. 20 .
IC5 (White, 17 Pin)Left end of dash. See Fig. 20 .
ID2 (White, 20 Pin)Left end of dash. See Fig. 20 .
IE1 (White, 2 Pin)At left kick panel. See Fig. 20 .
IF3(Wht 14P )

Page 2639 of 4500

LEXUS LS430 2003 Factory Repair Manual GROUNDS LOCATION
Under center console. See Fig. 22 .
IF4 (White, 25 Pin)Under center console. See Fig. 22 .
IF5 (White, 22 Pin)Under center console. See Fig. 22 .
IG3 (White, 18 Pin)Right side of das

Page 2640 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 1: Engine Compartment
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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