Important: It is not possible to bleed the hydraulic modulator manually. If air has entered the ABS hydraulic modulator, or if an unfilled modulator is installed, a diagnostic tool must be used to bleed the brake system. Replacement modulators are supplied filled and bled. Air will not enter the modulator if the vehicle is subject to routine maintenance procedures that include the modulator, such as replacing the brake controller. In such cases, bleed the system according to the instructions in this section.
1. With the engine off, press the brake pedal several times to equalize the pressure in the vacuum booster with atmospheric pressure.
Important: If there is a suspicion that there is no air in the master cylinder, then bleeding should begin at step 11. If there is a suspicion that there may be air in the master cylinder, then the master cylinder should be bled starting at step 2.
Note: Avoid contact with brake fluid on the paintwork as this may damage it.
2. Fill the master cylinder reservoir with brake fluid. When bleeding, the master cylinder reservoir should be at least half full of fluid
3. Disconnect the brake line from the master cylinder.
4. Fill the master cylinder with fluid until it starts to flow out through the fitting.
5. Reconnect the brake line to the master cylinder.
6. Slowly press the brake pedal and hold it in this position.
7. With the brake pedal depressed, loosen the brake pipe fastening at the top of the master cylinder to release air from the cylinder.
8. Lightly tighten the brake pipe fastener. Then slowly release the brake pedal. Wait 15 seconds before proceeding to the next step.
9. Repeat steps 6-8 as many times as necessary to completely remove air from the master cylinder cavity.
10. Tighten the brake pipe fastening.
Tighten
Tighten the brake pipe fastening to 16 Nm (12 ft·lbs).
11. Install a transparent tube on the bleed nipple on the right rear caliper. Lower the end of the tube into brake fluid poured into a transparent container. After bleeding the right rear caliper in the sequence described below, you must perform this procedure using the bleed nipples on the left front, left rear, and right front calipers.
12. Slowly press the brake pedal and hold it in this position. When bleeding, do not press the brake pedal sharply.
13. While holding the brake pedal down, loosen the bleeder screw to release air from the caliper.
14. When the air bubbles stop coming out into the vessel, you should tighten the bleed nipple a little.
15. Release the brake pedal slowly. Wait 15 seconds before moving on to the next step.
Note: Avoid contact with brake fluid on the paintwork as this may damage it.
16. Repeat steps 12-15 as many times as necessary to completely remove the air. The air will be completely removed when air bubbles stop coming out into the container after loosening the bleed nipple. During bleeding, the master cylinder reservoir should be filled with fluid at least halfway
17. Tighten the bleed screw.
Tighten
Tighten the bleed nipple to 6 Nm (53 lbs.in).
18. Bleed the remaining calipers in the following order: left front, left rear, right front. Use the procedure consisting of steps 11-16.
19. After bleeding air through all calipers, check the brake pedal for "softness". If the brake pedal is not "hard", then repeat the entire bleeding procedure to eliminate this malfunction.