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 SC 430FACTORY OEM SERVICE PROCEDURE
Automatic Transaxle
- Automatic Transmission System
- Precaution
- Definition Of Terms
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Road Test
- Mechanical System Tests
- Hydraulic Test
- Manual Shifting Test
- Initialization
- Monitor Drive Pattern
- Problem Symptoms Table
- Terminals Of Ecu
- Diagnosis System
- DTC Check / Clear
- Check Mode Procedure
- Fail-Safe Chart
- Data List / Active Test
- Diagnostic Trouble Code Chart
- DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input); DTC P0850: PARK/NEUTRAL Switch Input Circuit
- DTC P0710: Transmission Fluid Temperature Sensor "A" Circuit; DTC P0712: Transmission Fluid Temperature Sensor "A" Circuit Low Input; DTC P0713: Transmission Fluid Temperature Sensor "A" Circuit High Input
- DTC P0711: Transmission Fluid Temperature Sensor "A" Performance
- DTC P0717: Turbine Speed Sensor Circuit No Signal
- DTC P0724: Brake Switch "B" Circuit High
- DTC P0729: Gear 6 Incorrect Ratio
- DTC P0748: Pressure Control Solenoid "A" Electrical (Shift Solenoid Valve SL1)
- DTC P0751: Shift Solenoid "A" Performance (Shift Solenoid Valve S1)
- DTC P0756: Shift Solenoid "B" Performance (Shift Solenoid Valve S2)
- DTC P0761: Shift Solenoid "C" Performance (Shift Solenoid Valve S3)
- DTC P0766: Shift Solenoid "D" Performance (Shift Solenoid Valve S4); DTC P0776: Pressure Control Solenoid "B" Performance (Shift Solenoid Valve SL2)
- DTC P0778: Pressure Control Solenoid "B" Electrical (Shift Solenoid Valve SL2)
- DTC P0781: 1-2 Shift (1-2 Shift Valve)
- DTC P0894: Transmission Component Slipping; DTC P2714: Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)
- DTC P0973: Shift Solenoid "A" Control Circuit Low (Shift Solenoid Valve S1); DTC P0974: Shift Solenoid "A" Control Circuit High (Shift Solenoid Valve S1)
- DTC P0976: Shift Solenoid "B" Control Circuit Low (Shift Solenoid Valve S2); DTC P0977: Shift Solenoid "B" Control Circuit High (Shift Solenoid Valve S2)
- DTC P0979: Shift Solenoid "C" Control Circuit Low (Shift Solenoid Valve S3); DTC P0980: Shift Solenoid "C" Control Circuit High (Shift Solenoid Valve S3)
- DTC P0982: Shift Solenoid "D" Control Circuit Low (Shift Solenoid Valve S4); DTC P0983: Shift Solenoid "D" Control Circuit High (Shift Solenoid Valve S4)
- DTC P0985: Shift Solenoid "E" Control Circuit Low (Shift Solenoid Valve SR); DTC P0986: Shift Solenoid "E" Control Circuit High (Shift Solenoid Valve SR)
- DTC P2716: Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)
- DTC P2757: Torque Converter Clutch Pressure Control Solenoid Performance (Shift Solenoid Valve SLU)
- DTC P2759: Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU)
- Transmission Control Switch Circuit
- Pattern Select Switch Snow Mode Circuit
- Pattern Select Switch Power Mode Circuit
- Automatic Transmission Fluid
- Extension Housing Rear Oil Seal
- Speed Sensor
- Transmission Wire
- Park / Neutral Position Switch
- Valve Body Assembly
- Shift Lock System
- Floor Shift Assembly
- Automatic Transmission Assembly
- Torque Converter And Drive Plate
- Automatic Transmission Unit
- Oil Pump
- Clutch Drum And Input Shaft Assembly
- Valve Body
- Shift Solenoid Valve
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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