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Home >> Porsche >> 2004 >> Cayenne Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Pcm2/CDR23 - Cd-Radio >> PCM2/CDR23 control module function >> MOST component check >> MOST system check

MOST system check

MENU ITEMS AND FUNCTION REFERENCE CHART

Menu item Function
  • MOST system check
Using this menu item, a MOST system check can be carried out with the ignition on and the engine running. 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 components list) is analyzed.
  • Ring line diagnosis.
  • Connect and start the 9588 Porsche System Tester II and switch on the ignition.
  • Select 'Cayenne' 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 (bottom)" in the Cayenne PCM2 MOST components 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.