1995 Lexus ES 300FACTORY OEM SERVICE PROCEDURE

Component Locations

COMPONENT LOCATIONS

Component Location
A/C Idle-Up Valve On Air Intake Chamber. See Figure
ACIS Intake Air Control
Valve (IACV) On Timing Belt End Of Intake Air Chamber. See Figure
ACIS-IACV Actuator On Timing Belt End Of Intake Air Chamber. See Figure
ACIS Vacuum Switching Valve (VSV) On Top Of Engine. See Figure
ACIS Vacuum Tank Under Battery. See Figure
Air Intake Chamber Above Right Side Of Engine, Bolted To Center Of Intake Manifold
Camshaft Sensor At Flywheel End Of Left Cylinder Head
Circuit Opening Relay Above Glove Box
Crankshaft Sensor Left Side Of Crankshaft Pulley
Data Link Connector
(DLC) No. 1 On End Of Air Intake Chamber. See Figure
EFI Fuse (15-Amp) Left Side Of Engine Compartment, In Fuse/Relay Block
EFI Main Relay To Left Of Battery, In Fuse/Relay Block
EGR Temperature Sensor Next To EGR Valve, On EGR Pipe
EGR Vacuum Modulator Next To EGR Valve. See Figure
EGR Vacuum Switching Valve (VSV) On Top Of Engine
Engine Control Module (ECM) Behind Glove Box
Engine Coolant Temperature
(ECT) Sensor On Water Inlet (Thermostat Housing)
EVAP (Charcoal) Canister Left Side Of Engine Compartment
EVAP Check Valve (For Canister) Under EVAP (Charcoal) Canister
EVAP Thermal Valve On Flywheel End Of Intake Manifold
Fuel Filter On Left Side Of Engine Compartment
Fuel Pressure Pulsation Damper Below Throttle Body, On Fuel Rail
Fuel Pressure Regulator On End Of Left Fuel Rail
Fuel Pressure Regulator
Vacuum Switching Valve (VSV) On Top Of Engine
Fuel Pump Under Rear Seat Cushion, In Fuel Tank
Idle Air Control
(IAC) Valve Under Throttle Body. See Figure
IGN Fuse (7.5-Amp) Behind Left Side Of Instrument Panel, In Fuse/Relay Block
Ignitor On Left Front Strut Tower
Ignition Coil One On Top Of Each Spark Plug
Intake Air Control Valve (IACV) & Actuator (For ACIS) On Timing Belt End Of Intake Air Chamber. See Figure
Intake Air Temperature
(IAT) Sensor Part Of Mass Airflow (MAF) Sensor
Knock Sensors Under Intake Manifold, On Top Of Cylinder Block
Mass Airflow (MAF) Sensor In Intake Air Hose. See Figure
Oxygen Sensor
Main One On Each Exhaust Manifold
Sub In Pipe Between Catalytic Converter & First Muffler
Park/Neutral Position (PNP) Switch Left Side Of Transaxle
PCV Valve In Timing Belt End Of Right Valve Cover
Starter Relay To Left Of Battery, In Fuse/Relay Block
Sub-Throttle Actuator
Motor (With TRAC) On Throttle Body. See Figure
VSS No. 1 On Right Side (Firewall Side) Of Transaxle. See Figure
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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