Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Lexus ES 350FACTORY OEM SERVICE PROCEDURE
Engine Control System - System & Component Testing, Removal, Inspection & Installation
- EVAP System
- ECM Power Source Circuit
- VC Output Circuit
- Fuel Pump Control Circuit
- Cranking Holding Function Circuit
- ACIS Control Circuit
- Air Intake Control Circuit
- MIL Circuit
- Active Control Engine Mount System
- Precaution
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Problem Symptoms Table
- Terminals Of Ecu
- Diagnosis System
- DTC Check/Clear
- Data List / Active Test
- Diagnostic Trouble Code Chart
- DTC P16A0 G Sensor Circuit
- DTC P16A1 Linear Solenoid Circuit or G Sensor Circuit
- DTC P16A2 Battery High Voltage
- DTC P16A3 TACH Signal Communication
- DTC P16A4 High Speed CAN Communication Bus
- ECU Power Source Circuit
- Camshaft Timing Oil Control Valve Assembly
- Throttle Body
- Active Control Engine Mount
- Active Control Engine Mount Ecu
- ECM
- Accelerator Pedal
- Mass Air Flow Meter
- VVT Sensor
- Crankshaft Position Sensor
- Engine Coolant Temperature Sensor
- Knock Sensor
- Acceleration Sensor
- Ignition Relay No. 2
- EFI Relay
- Circuit Opening Relay
- Air Fuel Ratio Sensor Relay
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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