2. Using adapters (special tool) connect the oil pressure gauges (A) to the master cylinder as shown in the figure.
3. Release air through the fittings (B).
4. Start the engine and let it run at idle speed.
5. Ask an assistant to press the brake pedal with a force of 98 N (10 kgf·m) and 294 N (30 kgf·m), measuring the pressure with a pressure gauge (A).
6. At each vacuum value, the pressure values indicated in the table below should be observed on the pressure gauges.
7. If the reading is outside the range specified above, check the master cylinder for leaks.
| Vacuum in the vacuum booster, kPa (mm Hg) | Brake pedal force, N (kgf·m) | Oil pressure in the master cylinder, kPa (kgf/cm²) | |
| With ABS system | Without ABS system | ||
| 0 (0) | 98 (10) | 0 (0) | |
| 294 (30) | 1920 (19,60) | ||
| 66,7 (500) | 98 (10) | 6330 (64,5) | |
| 294 (30) | 12130 (123,7) | ||
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