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Home >> Porsche >> 2004 >> Cayenne Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Pcm2/CDR23 - Man Machine Interface >> MMI function control modules >> MOST component check >> MOST system check (with engine running)

MOST system check (with engine running)

MOST SYSTEM CHECK (WITH ENGINE RUNNING) REFERENCE

Menu item Function
  • MOST system check (with engine running)
Using this menu item, a MOST system check can be carried out with the 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 components list) is analysed.
  • Ring line diagnosis.
  • Connect and start the Porsche System Tester II No. 9588 and switch on the ignition.
  • Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key
  • Select 'PCM2' in the Control units 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 instructions of the tester.

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

Afterwards, the check is broken off

  • Start the optical performance check.