Starting diagnosis

Connect the Porsche System Tester II 9588 to the diagnostic socket connector in the vehicle.
Switch on the Porsche System Tester II 9588 (it will be ready for operation in approx. 60 seconds).
Switch on ignition
Select the vehicle type and initiate diagnosis with key "2.14". The Porsche System Tester II 9588 starts to search for control units and then lists all control units it finds. Control units that are not installed (e.g. Tiptronic control unit on vehicles with manual transmission) are displayed in grey.

NOTE:

If no control units are detected, check whether the ignition is on or whether terminal 15 is present on the diagnostic socket.
If faults are stored in a control unit, this is identified with the # symbol as before.

The Porsche System Tester II 9588 switches itself off after an Off-delay if:

no voltage is supplied via the mains power supply unit or via the vehicle battery
no data are being transferred via an interface (no key pressed, no communication with control unit).

The Off-delay time can be changed in the Configuration menu. The default Off-delay time is 3 minutes. Automatic switch-off is preceded by a rhythmic beeping sound (10 seconds). The Porsche System Tester II 9588 will remain switched on if the mains power supply is connected or a key is pressed within this time.