Two Person Procedure
Important: Use the two person bleed procedure when installing a new Brake Pressure
Modulator Valve (BPMV) or when air is trapped in the valve body.
Observe the following guidelines when performing this procedure.
• | Do not drive the vehicle until the brake pedal feels firm. |
• | Do not reuse brake fluid that is used during bleeding. |
• | Use the vacuum, pressure and gravity bleeding procedures only
for base brake bleeding. |
- Raise the vehicle in order to access the system bleed screws.
Refer to
Lifting and Jacking the Vehicle
in General Information.
- Bleed the system at the right rear wheel first.
- Install a clear hose on the bleed screw.
- Immerse the opposite end of the hose into a container partially
filled with clean DOT 3 brake fluid.
- Open the bleed screw 1/2 to one full turn.
- Slowly depress the brake pedal. While the pedal is depressed to
its full extent, tighten the bleed screw.
- Release the brake pedal and wait 10 seconds for the master
cylinder pistons to return to the home position.
- Repeat the previous steps for the remaining wheels. The brake
fluid which is present at each bleed screw should be clean and free of air.
- This procedure may use more than a pint of fluid per wheel. Observe
the master cylinder fluid level every four to six strokes of the brake pedal
in order to avoid running the system dry.
- Install a scan tool.
- Press the brake pedal firmly and use the scan tool in order to
perform 3 consecutive ABS function tests. Release the brake pedal
between each test.
- Bleed all four wheels again using Steps 3-9 in order
to remove any remaining air from the brake system.
- Evaluate the feel of the brake pedal before driving the vehicle.
- Bleed the system as many times as necessary in order to obtain
the appropriate feel of the pedal.