General Information: Notes
WARNING: This page is about a different car, the 2003 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
A large number of ECU controlled systems are used in the LEXUS RX300. In general, the ECU controlled system is considered to be a very intricate system requiring a high level of technical knowledge and expert skill to troubleshoot. However, the fact is that if you proceed to inspect the circuits one by one, troubleshooting of these systems is not complex. If you have adequate understanding of the system and a basic knowledge of electricity, accurate diagnosis and necessary repair can be performed to locate and fix the problem.
TROUBLESHOOTING PROCEDURE
| System | Action |
|---|---|
| 1. Engine | SELF-DIAGNOSTICS |
| 2. Automatic Transaxle | AUTOMATIC TRANSMISSION - DIAGNOSIS |
| 3. ABS & BA & TRAC & VSC System | ANTI-LOCK BRAKE SYSTEM - DIAGNOSIS |
| 4. Supplemental Restraint System | SUPPLEMENTAL RESTRAINT SYSTEM |
| 5. Power Seat Control System | POWER & HEATED SEATS |
| 6. Cruise Control System | CRUISE CONTROL |
| 7. Engine Immobiliser System | ENGINE IMMOBILIZER |
| 8. Combination Meter System | COMBINATION METER |
| 9. Sliding Roof System | SLIDING ROOFMOON ROOF |
| 10. Body Control System | BODY CONTROL SYSTEM - DIAGNOSIS |
| 11. Driver Door Control System | POWER DOOR LOCKS & LIFTGATE |
| 12. Passenger Door Control System | POWER DOOR LOCKS & LIFTGATE |
| 13. Rear Left Door Control System | POWER DOOR LOCKS & LIFTGATE |
| 14. Rear Right Door Control System | POWER DOOR LOCKS & LIFTGATE |
| 15. Multiplex Communication System | MULTIPLEX COMMUNICATION SYSTEM |
| 16. LEXUS Navigation System | LEXUS NAVIGATION SYSTEM - DIAGNOSIS |
| 17. Air Conditioning System | AIR CONDITIONING SYSTEM - DIAGNOSIS |