MOST component check

The following checks are available under this menu item:

MOST system check
Ring break diagnosis
Ring break diagnosis line
Optical performance check
NOTE: The engine must not be started during the automatic check. Follow the instructions of the Porsche System Tester II 9588.

Test sequences are automatic. The test results are displayed.

MOST COMPONENT CHECK ITEM - FUNCTION

Menu item	Function
MOST system check	An automatic MOST system check can be carried out using this menu item. Connect and start the Porsche System Tester II 9588 and switch on the ignition. Select Boxster (986) in the Vehicle type menu and confirm with the ">>" key. Select PCM in the Control units selection menu and confirm with the ">>" key. Select MOST component check in the Boxster (986) CDR23 function selection menu and confirm with the ">>" key. Select MOST system check in the CDR23 MOST component check menu and confirm with the ">>" key. The test result is displayed. Before replacing control units, the optical waveguide and the ring break diagnosis line must be checked.
Ring break diagnosis	An automatic ring break diagnosis can be carried out using this menu item. Connect and start the Porsche System Tester II 9588 and switch on the ignition. Select Boxster (986) in the Vehicle type menu and confirm with the ">>" key. Select PCM in the Control units selection menu and confirm with the ">>" key. Select MOST component check in the Boxster (986) CDR23 function selection menu and confirm with the ">>" key. Select MOST ring break diagnosis in the Boxster (986) CDR23 MOST component check menu and confirm with the ">>" key. The test result is displayed. Before replacing control units, the optical waveguide and the ring break diagnosis line must be checked.
Ring break diagnosis line	An automatic check of the ring break diagnosis line can be carried out using this menu item. Connect and start the Porsche System Tester II 9588 and switch on the ignition. Select Boxster (986) in the Vehicle type menu and confirm with the ">>" key. Select PCM in the Control units selection menu and confirm with the ">>" key. Select MOST component check in the Boxster (986) CDR23 function selection menu and confirm with the ">>" key. Select MOST ring break diagnosis line in the Boxster (986) CDR23 MOST component check menu and confirm with the ">>" key. The test result is displayed. Before replacing control units, the optical waveguide and the ring break diagnosis line must be checked.
Optical performance check	The transmission errors can be read out using this menu item. Connect and start the Porsche System Tester II 9588 and switch on the ignition. Select Boxster (986) in the Vehicle type menu and confirm with the ">>" key. Select PCM in the Control units selection menu and confirm with the ">>" key. Select MOST component check in the Boxster (986) CDR23 function selection menu and confirm with the ">>" key. Select Optical performance check in the Boxster (986) CDR23 MOST component check menu and confirm with the ">>" key. The test result is displayed. Before replacing control units, the optical waveguide and the ring break diagnosis line must be checked.