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.
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HOMESERVICE MANUALSSATURN2000LS AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSAXLE DIAGNOSIS - 4T40-E & 4T45-E
2000 Saturn LS Automatic
Automatic Transaxle Diagnosis - 4T40-E & 4T45-E
2000 Saturn LS AutomaticSECTION Automatic Transaxle Diagnosis - 4T40-E & 4T45-E
- Application
- Description & Operation
- Trouble Shooting
- Diagnosis & Testing
- Diagnostic Tests
- Introduction
- DTC B2707: Gearshift Unlock - Circuit Low
- DTC B2708: Gearshift Unlock - Circuit High
- DTC P0218: Transaxle Fluid Overheating
- DTC P0502: Vehicle Speed Sensor Circuit (Low Input)
- DTC P0503: Vehicle Speed Sensor Circuit (Intermittent)
- DTC P0711: Transmission Fluid Temperature Sensor Circuit Performance Malfunction
- DTC P0712: Transmission Fluid Temperature Sensor Circuit (Low Input)
- DTC P0713: Transmission Fluid Temperature Sensor Circuit (High Input)
- DTC P0716: Input Speed Sensor Range Malfunction
- DTC P0717: Input Speed Sensor Circuit (No Signal)
- DTC P0719: Brake Switch Circuit Low Input (Switch Stuck On)
- DTC P0724: Brake Switch Circuit High Input (Switch Stuck Off)
- DTC P0730: Incorrect Gear Ratio
- DTC P0741: TCC Circuit Inoperative (Stuck Off)
- DTC P0742: TCC Circuit Inoperative (Stuck On)
- DTC P0748: Pressure Control Solenoid Electrical Malfunction
- DTC P0751: 1-2 Shift Solenoid Performance (No 1ST Or 4TH Gear)
- DTC P0752: 1-2 Shift Solenoid Valve Performance (No 2ND Or 3RD Gear)
- DTC P0753: 1-2 Shift Solenoid Electrical
- DTC P0756: 2-3 Shift Solenoid Performance
- DTC P0757: 2-3 Shift Solenoid Performance - No 3RD Or 4TH Gear
- DTC P0758: 2-3 Shift Solenoid Electrical Malfunction
- DTC P1810: Pressure Switch Assembly Malfunction
- DTC P1811: Maximum Adapt & Long Shift
- DTC P1860: TCC PWM Solenoid Circuit Electrical Malfunction
- DTC P1887: TCC Release Switch Circuit Malfunction
- Symptom Tests
- Circuit Tests
- Component Tests
- Removal & Installation
- Wiring Diagrams
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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.