PCM2/CDR23 911 Turbo (996)91 · Menu item Function

PCM2/CDR23 911 Turbo (996)91 Menu item Function ♦Ring break diagnosis (with Using this menu item, a ring break diagnosis can be carried out (with the engine running). engine running). ♦9588 Connect and start the Porsche System Tester II and switch on the ignition. ♦Select '911 Turbo (996)' in the Vehicle type menu and confirm with the >> key. ♦Select 'PCM2' in the Control modules menu and confirm with the >> key. ♦Select 'MOST components check' in the PCM2 function selection and confirm with the >> key. ♦Select "Ring break diagnosis (when the engine is running)" in the 911 Turbo (996) PCM2-GW MOST components check function selection and confirm with the >> key. MOST lock/unlock A lock occurs when the signal sent from the MMI via the MOST opti- cal/electrical is understood and answered by the connected MOST control modules. This applies a correct optical MOST signal. The lock is maintained until the signal is no longer detectable for a longer period of time (several µseconds) 'unlock'. Interruptions occur in the system if perfect communication is no longer possible. If the relevant threshold values are exceeded, an entry is recorded in the appropriate control module and the 'optical' is incremented. Note! Using the function 'Reset all coding/transfer counters' all set fault counters of all components can be collectively reset to '0'. MOST - optical/electrical MOST signals are transferred electrically within the PCM/CDR23 and optically outside of the PCM/CDR23. Internally, the PCM2 con- sists of at least 2 nodes (GW and MMI), which are installed in the device and can also be expanded to four nodes by adding the navi- gation and VOCS nodes. Internally, the CDR23 consists of one node (GW) which is installed in the CDR23. The data is transferred outside of the PCM2 via the optical waveguide, which creates a connection to the nodes in the external MOST control modules such as external amplifiers, CD changers, and/or telephone/telematics (depending on the equipment). The data is transferred outside of the CDR23 via the optical waveguide, 91-104 page 10 9101 Control module function - external BOSE amplifier SgfVBlwl Printed in Germany – 43, 2003