Scan Tool Testing and Procedures

Telephone/Telematics Control Module Function

Terminating resistors in the CAN
Terminating resistors are fitted to each end of the wiring to prevent reflection on the wiring. These terminating resistors are integrated into each control module. The interconnection prevents the resistors from being measured with the ohmmeter from the outside.

CAN comfort
Communication between the Porsche System Tester II 9588 and the MOST control modules only takes place via the K lead to the instrument cluster. The data is transferred from the instrument cluster gateway to the MOST control modules, via CAN Comfort to the PCM2 gateway, via the electrical MOST in the PCM2 and via the optical MOST outside of the PCM2.

CD changer (CDC)
The CDC is available as an optional feature and is linked to the PCM2 via the optical waveguide.

Coding table

Coding Table (Part 1):

Coding Table (Part 2):

Coding Table (Part 3):

Coding
Under the menu item Modify coding, the PCM2 codes can be coded on a vehicle and country-specific basis.

Menu item
- External handset

Function
You can code an external telephone handset 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 >> key.
- Select PCM in the Control units menu and confirm with the >> key
- Select Telephone/telematics in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select Coding in the 911 (996) telephone/telematics function selection and confirm with the >> key.
- Select Country coding in the 911 (996) telephone/telematics coding function selection and confirm with the >> key.
- Select External handset from the menu item displayed and code it with the F8 key.