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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Radio, Navigation & Pcm Diagnosis - 911 CARRERA (996) >> CDR23 control module function >> Input signals

Input signals

The following queries can be run using this menu item:

NOTE: Deactivate the automatic traffic announcement before performing the diagnosis on the CDR23. If this is not done, the system will crash.
INPUT SIGNALS - CDR23

Menu item Function
  • GAL (noise-dependent loudspeaker boost - NLB)
You can read out the coded NLB value using this menu item.
  • Connect and start the Porsche System Tester II 9588 and switch on the ignition.
  • Select 911 (996) in the Vehicle type menu and confirm with the "FORWORD" key.
  • Select PCM in the Control modules menu and confirm with the "FORWORD" key.
  • Select CDR23 in the 911 (996) PCM2 function selection menu and confirm with the "FORWORD" key.
  • Select Input signals in the 911 (996) CDR23 function selection menu and confirm with the "FORWORD" key.
  • Select GAL (noise-dependent loudspeaker boost - NLB)  in the 911 (996) CDR23 function selection menu and confirm with the "FORWORD" key.
  • The current coded value is displayed in the 911 (996) CDR23 noise-dependent loudspeaker menu.
  • Increment steps
You can check the function of the CDR23 rotary knobs using this menu item.
  • Connect and start the Porsche System Tester II 9588 and switch on the ignition.
  • Select 911 (996) in the Vehicle type menu and confirm with the "FORWORD" key.
  • Select PCM in the Control modules menu and confirm with the "FORWORD" key.
  • Select CDR23 in the 911 (996) PCM2 function selection menu and confirm with the "FORWORD" key.
  • Select Input signals in the CDR23 function selection menu and confirm with the "FORWORD" key.
  • Select Increment steps  in the 911 (996) CDR23 Input signals menu and confirm with the "FORWORD" key.
  • The relevant change is displayed by turning the rotary knobs of the CDR23 if this functions correctly.
  • Key code
You can check the function of the CDR23 operating buttons using this menu item.
  • Connect and start the Porsche System Tester II 9588 and switch on the ignition.
  • Select 911 (996) in the Vehicle type menu and confirm with the "FORWORD" key.
  • Select PCM in the Control modules menu and confirm with the "FORWORD" key.
  • Select CDR23 in the 911 (996) PCM2 function selection and confirm with the "FORWORD" key.
  • Select Input signals in the CDR23 function selection and confirm with the "FORWORD" key.
  • Select Key code  in the 911 (996) CDR23 function selection and confirm with the "FORWORD" key.
  • By operating the buttons of the CDR23, the correct function of each key code is displayed.
  • Tuner parameters
You can check the tuner parameters of the CDR23 using this menu item.
  • Connect and start the Porsche System Tester II 9588 and switch on the ignition.
  • Select 911 (996) in the Vehicle type menu and confirm with the "FORWORD" key.
  • Select PCM in the Control modules menu and confirm with the "FORWORD" key.
  • Select CDR23 in the 911 (996) PCM function selection and confirm with the "FORWORD" key.
  • Select Input signals in the CDR23 function selection and confirm with the "FORWORD" key.
  • Select Tuner parameters  in the 911 (996) CDR23 Input signals function selection and confirm with the "FORWORD" key.
  • The currently coded country code is displayed in the CDR23 Tuner parameters menu.
  • Status of the optical performance check
You can check the status of the optical waveguides using this menu item.
  • Connect and start the Porsche System Tester II 9588 and switch on the ignition.
  • Select 911 (996) in the Vehicle type menu and confirm with the "FORWORD" key.
  • Select PCM in the Control modules menu and confirm with the "FORWORD" key.
  • Select CDR23 in the 911 (996) PCM2 function selection and confirm with the "FORWORD" key.
  • Select Input signals in the CDR23 function selection and confirm with the "FORWORD" key.
  • Select Key code  in the 911 (996) CDR23 input signals function selection and confirm with the "FORWORD" key.
  • Select Status of optical performance check  in the CDR23 input signals menu and confirm with the "FORWORD" key.
  • The result can be read out.