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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heater, Diagnosis - 911 CARRERA (996) >> Control module function - as of MY 2002 >> Modify coding

Modify coding

This menu item is used to retrieve and change the coding of the following functions:

CODING MODIFICATION - AS OF MY 2002

Coding Setting Function
Japan coding
Recirculating function
Active/ not active In the coding for Japan, air recirculation is switched on constantly even when external temperatures are < 3°C (also no automatic resetting after ignition off 20 minutes)
Pollen filter Present/not present  
AC symbol Active / not active The AC symbol can be hidden in the display.
PCM Installed /not installed Vehicles without PCM or with PCM2 must be coded as not installed!

Procedure:

  1. Select the menu item Modify coding using the Porsche System Tester II 9588. (The table listed above appears.)
  2. The display can be saved using the "F4" key.
  3. Using the buttons up and down select the coding to be modified and continue using the "FORWORD" button.
  4. Using the buttons up and down select the correct coding and confirm using the Coding (F8) button.
  5. The upper right display changes to the new coding.
  6. For coding overview, return using the button "BACKWORD".
  7. Select another coding (see Step  3 ) or end the procedure using the button "BACKWORD".