Menu: Bleed (ABS/TC5.3) · Important notes --=='~The Bleed menu is not availablewith

911 Carrera (996) Anti-lock brake system diagnosis Menu: Bleed (ABS/TC5.3) Bleeding Important notes --=='~The Bleed menu is not availablewith the Solo ABS (it is not required). '\ On vehicles with Traction Control, this menu ~ can be used to bleed the ABD secondary circuit in the hydraulic unit. This additional bleeding is necessary only after conventional bleeding has been performed 625_% and only if the hydraulic unit is replaced or was removed. Open the rear right bleeder valve (use collection bottle), The secondary circuit also can be bled in the event that the brake pedal travel is too Press the Start key on the System Tester. large if the system was properly bled by This initiates certain functions in the the conventionalmethod beforehand. hydrauliccontrol unit (return pump, outlet solenoidvalve and switch-over Bleeding the ABD circuit solenoidvalve are activated). -Preliminary work: Bleed brakes by Bleed the system until the brake fluid conventionalmethod (repair group 47, emergeswithout bubbles. Volume4, Runninggear). In addition (during the entire bleeding process),fully depress the brake pedal The bleeding unit remainsconnected to the stop (pump) at least ten times. (switched on) when the ABD circuit is being bled. Important: Doublethe number of pumping cycles for vehicles with extremely high mileage Bleeding pressure approximately 1.5...2.0 bar. or for very old vehicles,and use only half of the master brake cylinder stroke Connectthe Porsche System Tester 2 (damagecould be caused to the master to the diagnostic socket. The diagnostic brake cylinder / primary boots). socket is located in the driver's footwell (left-handdrive vehicles)or passenger's footwell (right-handdrive vehicles)near the fuse box. Switch on the ignition. Select the "Bleed" menu in the ABS/TC system. 45 02 Diagnosis/troubleshooting 45 -D 43 Printed in Germany -17, 1998