Input Signals

Input signals

The following queries can be run using this menu item:
- 3 dB loss

NOTE: Deactivate the 'automatic traffic announcement' before performing the diagnosis on the PCM2. If this is not done, the diagnosis will abort.

Menu item Function

- 3dB lowering Under this menu item, it is possible to check the electrical and optical MOST during troubleshooting.
- Connect and start the 9588 Porsche System Tester II and switch on the ignition.
- Select vehicle type 911 (996) in the menu and confirm with the [>>] key.
- Select 'PCM' in the Control modules menu and confirm with the [>>] key.

- Select 'External BOSE amplifier' in the 911 (996) PCM2 function selection and confirm with the [>>] key.

- Select 'Input signals' in the 911 (996) external BOSE amplifier function selection and confirm with the [>>] key.
- Select the "3dB lowering" menu item using the G key and confirm with the [>>] key.