Vue 2006-2007

Bleeding the ABS System


Before servicing any vehicle, please be sure to read the precautions section, which deals with personal safety, prevention of component damage, and important points to take into consideration when servicing a motor vehicle.

Before performing the Antilock Brake System (ABS) Automated Bleed Procedure, first perform a manual or pressure bleed of the base brake system. The automated bleed procedure is recommended when Base brake system bleeding does not achieve the desired pedal height or feel, extreme loss of brake fluid has occurred or air ingestion is suspected in the secondary circuits of the brake modulator assembly.

Automated Bleed Procedure

The ABS Automated Bleed Procedure uses a scan tool to cycle the system solenoid valves and run the pump in order to purge any air from the secondary circuits. These circuits are normally closed off, and are only opened during system initialization at vehicle start up and during ABS operation. The automated bleed procedure opens these secondary circuits and allows any air trapped in these circuits to flow out toward the brake corners.

The Auto Bleed Procedure may be terminated at any time during the process by pressing the EXIT button. No further Scan Tool prompts pertaining to the Auto Bleed procedure will be given. After exiting the bleed procedure, relieve bleed pressure and disconnect bleed equipment per manufacturer-s instructions. Failure to properly relieve pressure may result in spilled brake fluid causing damage to components and painted surfaces.

  1. Raise and safely support the vehicle.
  3. Remove all 4 tire and wheel assemblies.
  5. Inspect the brake system for leaks and visual damage and repair or replace components as needed.
  7. Lower the vehicle.
  9. Inspect the battery state of charge.
  11. Install a scan tool.
  13. Turn the ignition ON , with the engine OFF .
  15. With the scan tool, establish communications with the ABS system. Select Special Functions then Automated Bleed from the Special Functions menu.
  17. Raise and support the vehicle.
  19. Following the directions given on the scan tool, pressure bleed the base brake system.
  21. Follow the scan tool directions until the desired brake pedal height is achieved.
  23. If the bleed procedure is aborted, a malfunction exists. Perform the following steps before resuming the bleed procedure:
    1. If a DTC is detected, refer to the Diagnostic Trouble Codes listed in this section.
    3. If the brake pedal feels spongy, perform the conventional brake bleed procedure again.

  25. When the desired pedal height is achieved, press the brake pedal to inspect for firmness.
  27. Lower the vehicle.
  29. Remove the scan tool.
  31. Install the tire and wheel assemblies. Tighten the wheel lug nuts to 100 ft. lbs. (136 Nm).
  33. Inspect the brake fluid level.
  35. Road test the vehicle while inspecting that the pedal remains high and firm.