This document is an overview of the basic knowledge of regular maintenance for Toyota technicians. It introduces the components of the vehicle, including the engine, transmission system, chassis, body electrical system, and body. It emphasizes the importance of engine maintenance and discusses maintenance items related to the engine, such as engine oil, engine oil filter, cooling system, and heater system.
The manual outlines the major vehicle systems—engine, transmission, chassis, electrical, and body—and explains why regular maintenance of each component is essential for reliable operation. It introduces the technician to the structure of the vehicle and the role of each part in overall performance.
Detailed sections cover maintenance tasks such as engine oil and filter changes, coolant system checks, drive belt inspection, air‑filter cleaning, valve clearance adjustment, timing belt replacement, spark‑plug service, battery inspection, fuel‑tank‑cap checks, and warning‑light diagnostics. Recommended service intervals and the reasons behind them are provided for typical models like the Corolla. This manual is written in Chinese.
| Engine oil change interval (gasoline) | 10,000 km (6,000 miles) or 1 year |
|---|---|
| Engine oil change interval (diesel) | 5,000 km (3,000 miles) or 6 months |
| Coolant system inspection interval | 40,000 km (24,000 miles) or 2 years |
| Air filter cleaning interval | 20,000 km (12,000 miles) or 2 years |
It keeps the coolant at a constant pressure so its boiling point stays above 100 °C, improving cooling efficiency.