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.
General Information: Notes
A large number of ECU controlled systems are used in the RAV4. In general, ECU controlled systems are considered to be a very intricate, requiring a high level of technical knowledge to troubleshoot. However, following the problem checking procedures of the ECU controlled system's circuits carefully is not complex. If you have an adequate understanding of the system and a basic knowledge of electricity, accurate diagnosis and necessary repair can be performed.
This information emphasizes the above standpoint to help service technicians perform accurate and effective troubleshooting. Detailed information on major ECU controlled systems in this vehicle are outlined below:
| System | See |
|---|---|
| 1. Engine | HOW TO PROCEED WITH TROUBLESHOOTING |
| 2. Automatic Transaxle (U140F) | HOW TO PROCEED WITH TROUBLESHOOTING |
| 3. Automatic Transaxle (U241E) | HOW TO PROCEED WITH TROUBLESHOOTING |
| 4. Tire Pressure Warning System | - |
| 5. Anti-lock Brake System with Electronic Brake Force Distribution (EBD) | HOW TO PROCEED WITH TROUBLESHOOTING |
| 6. ABS With EBD & BA & TRC & VSC System | HOW TO PROCEED WITH TROUBLESHOOTING |
| 7. CAN Communication System | HOW TO PROCEED WITH TROUBLESHOOTING |
| 8. Supplemental Restraint System | HOW TO PROCEED WITH TROUBLESHOOTING |
| 9. Wireless Door Lock Control System | HOW TO PROCEED WITH TROUBLESHOOTING |
| 10. Cruise Control System | HOW TO PROCEED WITH TROUBLESHOOTING |
| 11. Engine Immobilizer System | HOW TO PROCEED WITH TROUBLESHOOTING |
| 12. Body Control System | HOW TO PROCEED WITH TROUBLESHOOTING |
Use the Manual With the Right Hardware
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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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