Operation CHARM: Car repair manuals for everyone.
Home >> Porsche >> 2004 >> 911 Carrera 4 (996) F6-3.6L >> Repair and Diagnosis >> Accessories and Optional Equipment >> General Module >> Testing and Inspection >> Component Tests and General Diagnostics >> PCM2/CDR23 MMI >> PCM2 MMI Control Module Function >> Terminating Resistors

Terminating Resistors



PCM2 MMI Control Module Function (part 1)

Terminating Resistors In The CAN
A terminating resistor is fitted to each end of the wiring to prevent reflection on the wiring. These terminating resistors are integrated into two control modules.

CAN Comfort
Communication between the Porsche System Tester II No. 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
The PCM2 can be coded country-specifically under the menu item 'Modify coding'.

Menu item Function

- Call automatically
accepted: Using this menu item the PCM2 can be coded so that an incoming call can be automatically accepted.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select "Call automatically accepted" in the PCM2 MMI coding function selection and confirm with the >> key.
- Select "Call automatically accepted" from the menu item displayed and code it with the F8 key.
- Display format You can code the display format using this menu item.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'Display format' in the PCM2 MMI coding function selection and confirm with the >> key.
- Use the arrow keys to select as required and code with the F8 key.
- Date You can use this menu item to code the date.
- Connect and start the Porsche System Tester II No. 9588 and switch on the ignition.
- Select '911 (996)' in the Vehicle type menu and confirm with the >> key.
- Select 'PCM' in the Control unit menu and confirm with the >> key.
- Select 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'Date' in the PCM2 MMI coding function selection and confirm with the >> key.
- Use the arrow keys to select as required and code with the F8 key.
- Units You can code the relevant units using this menu item.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'Units' in the PCM2 MMI coding function selection and confirm with the >> key.
- Select "the relevant units" from the menu item that is displayed and code them with the F8 key.
- Vehicle type vehicle
coding The PCM2 MMI corresponding to the vehicle type can be coded using this menu item.
- Connect and start the Porsche System Tester II No. 9588 and switch on the ignition.
- Select '911 (996)' in the Vehicle type menu and confirm with the >> key.
- Select 'PCM' in the Control unit menu and confirm with the >> key.
- Select 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'Vehicle type vehicle coding' in the PCM2 MMI coding function selection and confirm with the >> key.
- Select "911 (996)" in the menu and code with the F8 key.
- Vehicle version vehicle
coding The PCM2 MMI corresponding to the vehicle version can be coded using this menu item.
- Connect and start the Porsche System Tester II No. 9588 and switch on the ignition.
- Select 911 (996) in the Vehicle type menu and confirm with the >> key.
- Select 'PCM' in the Control unit menu and confirm with the >> key.
- Select 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the 911 (996) PCM2 MMI function selection and confirm with the >> key.
- Select "Vehicle version" in the PCM2 MMI coding function selection and confirm with the >> key.
- Select the relevant version "Coupe, Cabrio, Targa" in the menu and code with the F8 key.
- Right/left-hand
drive vehicle coding The PCM2 MMI corresponding to the vehicle version can be coded using this coding menu item.
- Connect and start the Porsche System Tester II No. 9588 and switch on the ignition.
- Select '911 (996)' in the Vehicle type menu and confirm with the >> key.
- Select 'PCM' in the Control unit menu and confirm with the >> key.
- Select 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the 911 (996) PCM2 MMI function selection and confirm with the >> key.
- Select "Right/left-hand drive vehicle coding" in the PCM2 MMI coding function selection and confirm with the >> key.
- Select 'Right/left-hand drive vehicle coding' in the Modify PCM2 coding menu and confirm with the >> key.
- Select "Right or left-hand drive" in the menu corresponding to the vehicle equipment and code with the F8 key.
- GAL (noise-dependent
loudspeaker
boost - NLB) You can code the NLB as required using this menu item.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'NLB' in the PCM2 coding function selection and confirm with the >> key.
- Select 'Value' corresponding to the desired volume and code with the F8 key.
- Country coding You can code the country code using this menu item.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'Country coding' in the PCM2 MMI coding function selection and confirm with the >> key.
- Select 'the relevant country coding' from the menu displayed and code it with the F8 key.

- Main Setup menu

- PCM2 code You can use this menu item to code the PCM2 code after replacing the PCM2 GW.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the 911 (996) PCM2 MMI function selection and confirm with the >> key.
- Select 'PCM2 code' in the PCM2 MMI coding function selection and confirm with the >> key.
- Take the PCM2 code from IPAS, enter it using the arrow keys and code it with the F8 key.
- Porsche Assistance,
international
designation Using this menu item, you can code the Porsche Assistance, international designation as appropriate.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the 911 (996) PCM2 MMI function selection and confirm with the >> key.
- Select 'Porsche Assistance, international designation' in the 911 (996) PCM2 MMI coding function selection and confirm with the >> key.
- In the Modify PCM2 MMI coding function selection, use the arrow keys to input data and code with the F8 key.
- Porsche Assistance,
international number Using this menu item, you can code the Porsche Assistance, international number as appropriate.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the 911 (996) PCM2 MMI function selection and confirm with the >> key.
- Select 'Porsche Assistance, international number' in the 911 (996) PCM2 MMI coding and confirm with the >> key.
- In the Modify PCM2 MMI coding function selection, use the arrow keys to input data and code with the F8 key.
- Porsche Assistance,
national designation Using this menu item, you can code the Porsche Assistance, national designation as appropriate.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the 911 (996) PCM2 MMI function selection and confirm with the >> key.
- Select "Porsche Assistance, national designation" in the 911 (996) PCM2 MMI coding and confirm with the >> key.
- In the Modify PCM2 MMI coding function selection, use the arrow keys to input data and code with the F8 key.
- Porsche Assistance,
national number Using this menu item, you can code the Porsche Assistance, national number as appropriate.
- Connect and start the Porsche System Tester II No. 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 'Coding' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Porsche Assistance, national number' in the 911 (996) PCM2 MMI coding and confirm with the >> key.
- In the Modify PCM2 MMI coding function selection, use the arrow keys to input data and code with the F8 key.
- Summer/winter time You can code the summer/winter time using this menu item.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'Summer/winter time' in the PCM2 MMI coding function selection and confirm with the >> key.
- Code the selection required with the F8 key.

- Timeout

- Traffic broadcast
loudspeaker boost You can use this menu item to code the traffic broadcast loudspeaker boost in the PCM2.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'Traffic broadcast loudspeaker boost' in the PCM2 MMI function selection and confirm with the >> key.
- Code the selection required with the F8 key.
- Time You can code the current time using this menu item.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'Time' in the PCM2 MMI coding function selection and confirm with the >> key.
- Use the arrow keys to select the required 'time' and code with the F8 key.
- Time zone You can code the required time zone using this menu item.
- Connect and start the Porsche System Tester II No. 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 'PCM2 MMI' in the 911 (996) PCM2 function selection and confirm with the >> key.
- Select 'Coding' in the PCM2 MMI function selection and confirm with the >> key.
- Select 'Time zone' in the PCM2 MMI coding function selection and confirm with the >> key.
- Select the required 'Time zone' and code with the F8 key.

Data Transfer Fault
If faults are detected when the data is decoded, this is known as a data transfer fault. The faults can arise when the data is encoded, when the data is transferred through an input level that is optically too low or when the data is decoded. A fault entry is not recorded.

Diagnosis Distribution Line
The diagnosis distribution line is an electrical lead, which, as a stub cable, connects the individual MOST control modules in the system with one another. The existing MOST control modules are checked at regular intervals during communication with the control modules via the electrical/optical MOST.

Extended Identification
Additional data present in the control unit can be read out using this menu item.
1. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition.
2. Select '911 (996)' in the Vehicle type menu and confirm with the >> key.
3. Select 'PCM' in the Control units menu and confirm with the >> key.
4. Select 'PCM2 MMI' in the PCM2 function selection and confirm with the >> key.
5. Select "Identification" in the PCM2 MMI function selection and confirm with the >> key.
6. "Diagnosis software number; PCM2 part number." appears on the display.
7. The extended identification can be read out using the F8 key or the >> key in the PCM2 - MMI identification function selection.

The following data can be read out:
- CRIN (Car Radio Identification Number)
- Date of ECU Manufacturing (YYYY;MM;DD)
- Repair Shop Code or Tester Serial Number
- System Supplier ECU Hardware Number (cw, year)
- System Supplier ECU Hardware Version Number
- System Supplier ECU Software Number (cw, year)
- System Supplier ECU Software Version Number
- Vehicle Manufacturer Diagnostic Index
- Vehicle Manufacturer ECU Hardware Number
- VIN (Vehicle Identification Number)

pro multis · About Operation CHARM