Porsche 996 TT, Repair Manual

Page: 894 / 2099

Do not carry out booster pump activation with the Porsche System Tester 2 until after this has been
done (after conventional bleeding) as otherwise damage to the booster pump can occur! •
To bleed at front on right with running booster pump the bleeding device remains connected
(switched on)! Bleeding pressure approximately 2.0 bar! •
1. Connect the Porsche System Tester 2 to the diagnostic socket.
2. Switch ignition on. Select the "Bleed" menu in the PSM system. Entry takes place through the ABS
system (automatic status change after PSM).
3. Open the front right bleeder valve (use hose and collecting bottle).
Note
After a certain period of time has elapsed, the Tester switches off automatically (leaves the menu)! If
necessary, continue the procedure after a certain waiting time (select Bleed menu again)! •
4. Press the Start button on the System Tester. In this way the booster pump is activated.
5. Bleed until clear, bubble−free brake fluid emerges.
6. In addition (throughout bleeding operation) fully depress (pump) brake pedal as far as the stop at
least ten times.
7. Close the right front bleeder valve. Then immediately press the Stop button on the System Tester. In this
way pump operation is ended.
8. Switch ignition off and disconnect System Tester.
9. Switch off and disconnect the bleeding device. Correct the brake fluid level if
necessary.
996420, 996421, 996450, 996451, 996620, 996621, 996650, 996651
einordnung
2nd step: Bleeding at front on right with running booster pump 831