Menu item Function · ♦MOST system check (with Using this menu item, a MOST system check can be carried

911 Turbo (996) PCM2/CDR23 91 Menu item Function ♦MOST system check (with Using this menu item, a MOST system check can be carried out with the engine running). ignition on. The following checks are carried out automatically and their results are displayed. ♦Gateway start-up condition is read out. ♦MOST installed components list (required and actual installed compo- nents list) is analysed. ♦Ring line diagnosis. ♦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 "MOST system check" in the 911 Turbo (996) PCM2 MOST com- ponents check function selection and confirm with the >> key. ♦Follow the Tester instructions. Whenever there are several ring breaks, the 1st ring break is displayed in the following order: ♦PCM2 Gateway > external amplifier. ♦External amplifier > CD changer. ♦CD changer > telephone. ♦Telephone > PCM2 MMI. is displayed. Then the check is terminated. ♦Start the optical performance check. Ring break diagnosis (with engine running) 9101 Control unit function - MMI 91-75 page 21 Printed in Germany – 43, 2003 SgfMMlwl