Step 2: Bleeding The ABD Circuit (Secondary Circuit) On Vehicles With Traction Control (TC)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 Porsche Boxster, 2003 Porsche Boxster, 2002 Porsche Boxster, 2001 Porsche Boxster, and 2000 Porsche Boxster. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
For vehicles with extremely high mileage or for very old vehicles, damage to the brake master cylinder can occur and the primary boots can be damaged! Double the number of pumping cycles and use only half of the master brake cylinder stroke!
NOTE:
- Bleed brakes as usual!
- Do not carry out return pump activation with the Porsche System Tester 2 until after this has been done (after conventional bleeding)!
- To bleed at rear on right with running pump motor, the bleeding device should remain connected (switched on)! Bleeding pressure approximately 1.0 to 2.0 bar!
- Connect the Porsche System Tester 2 to the diagnostic socket -arrow- , see Fig 1 .
- Switch ignition on. In the ABS/TC system, select the "Bleed" menu.
- Open the rear right bleeder valve (use hose and collecting bottle).
- Press the Start button on the System Tester.NOTE:
- This initiates certain functions in the hydraulic control unit (return pump, switch-off and switch-over valves are actuated)!
- Bleed until clear, bubble-free brake fluid emerges.
- In addition (throughout bleeding operation) fully depress (pump) brake pedal as far as the stop at least ten times.
- Close the right rear bleeder valve. Then immediately press the Stop button on the System Tester. In this way pump operation is ended.
- Switch ignition off and disconnect System Tester.
- Switch off and disconnect the bleeding device. Correct the brake fluid level if necessary.