Ford Mustang (1999-2004) Service Manual: Four Wheel Anti-Lock Brake System (4WABS) Hydraulic Control Unit (HCU)

NOTE: This procedure only needs to be performed if the 4-wheel anti-lock brake (4WABS) hydraulic control unit (HCU) has been installed new or if the HCU lines have been opened.

1. Clean all dirt from and remove the brake master cylinder filler cap (2162), and fill the brake master cylinder reservoir (2K478) with the specified brake fluid.

Bleeding - Components

2. Connect a clear waste line to the RH rear bleeder screw (2208) and the other end in a container partially filled with recommended brake fluid.

Bleeding - Components

3. Loosen the RH rear bleeder screw until a stream of brake fluid comes out. While the assistant maintains pressure on the brake pedal (2455), tighten the RH rear bleeder screw.

  • Repeat until clear, bubble-free fluid comes out.
  • Refill the brake master cylinder reservoir as necessary.

4. Tighten the RH rear bleeder screw, and disconnect the waste line.

Bleeding - Components

5. Repeat Steps 2, 3 and 4 for the LH rear bleeder screw, the RH front disc brake caliper (2B120) bleeder screw, and the LH front disc brake caliper bleeder screw, in that order.

Bleeding - Components

6. Connect the scan tool DCL cable adapter into the vehicle data link connector (DLC) under the dash, and follow the scan tool instructions.

Bleeding - Components

7. Repeat the system bleed procedure as outlined in Steps 1 through 5.

    Master Cylinder Priming - 4.6L
    1. CAUTION: Use only bleed screws on the engine side of the brake master cylinder (2140). The hydro-boost bleed screw, located near the dash on the hydro-booster casting, is for the booster ...

    Caliper
    1. NOTE: It is not necessary to do a complete brake system bleed if only the disc brake caliper (2B120) was disconnected. Place a box end wrench on the disc brake caliper bleeder screw (2208). ...

    Other materials:

    System Air Flow Description
    MAX A/C When MAX A/C is selected: The air inlet door vacuum control motor is at full vacuum, closing off outside air and admitting only recirculated air. The panel/defrost door vacuum control motor is at full vacuum and the panel/floor door vacu ...

    Power windows
    WARNING: Do not leave children unattended in your vehicle and do not let children play with the power windows. They may seriously injure themselves. WARNING: When closing the power windows, you should verify they are free of obstructions and make sure that chi ...

    Purging - CII Power Steering Pump
    Special Tool(s) Vacuum Pump 416-D002 (D95L-7559-A) or Equivalent CAUTION: If the air is not purged from the power steering system correctly, premature power steering pump failure can result. This condition can occur on pre-delivery vehicles ...