General instructions/safety instructions
The following points must be observed during vehicle diagnosis
- After the battery is connected, volatile memories must be reprogrammed. In the case of radio coding and tuning, the customer must be informed of decoding and the deleted tuner memory.
- After connecting the battery, the instructions in the assembly, refer to «90 IN Work instructions after disconnecting the battery - as of MY 2003 (All Models Except Cayenne S TIO Titan)»(ref-274623-S36378860462007121900000) are to be observed.
- Deactivate the 'automatic traffic announcement' before beginning the diagnosis on the PCM2. If this is not done, the system will crash.
- When working on the optical waveguide, the instructions in assembly, refer to «97 72 23 INSTALLING OPTICAL WAVEGUIDE - AS OF MY 2003 (ALL MODELS)»(ref-274627-S12003475892007121900000) - MOST bus are to be observed.
- After troubleshooting or repairs, erase the fault memory with the Porsche System Tester II No. 9588 and carry out a test drive.
- After the test drive, read out the fault memory with the Porsche System Tester II No. 9588 again.
| WARNING | Danger! Danger of injury through triggering of driver's airbag Never hang the Porsche System Tester II No. 9588 over the steering wheel. |
| CAUTION | Danger of damage due to improper handling of the battery and the control unit connectors! Never disconnect battery with engine running. Never start engine without securely connected battery. Never pull off or push on plug connections for the control modules or other electronic components when the ignition is switched on |
Fault code setting conditions
Fault codes can be set in several circumstances, e.g.
- battery disconnected
- plug connections disconnected
- voltage drop
In these circumstances, no fault is present in the system and the fault memory must be erased.
Fault memory Info key [F8]
In order to be able to assess the fault exactly, the fault memory Info key [F8] must be pressed. This information should be saved using the Save key [F4] and printed out. If a fault code is stored with "not present" status and no other problems are present, then the fault memory must be erased.
| Fault type - Frequency counter/Temperature/Voltage; Speed/Time of occurence | |
|---|---|
| Fault type | The following display types are available: EEPROM fault Tuner communication fault General communication fault |
| Key code | The button which has caused the fault is displayed in plain text. |
| Frequency counter | When a fault first occurs, a fault entry is made in the fault memory and the counter is simultaneously set to 50. If a fault is present, the counter is incremented by 1 for each "ignition on". The maximum count is 100. The counter is decremented if the fault is no longer present. The fault memory is erased automatically when the counter reaches 0. |
| First occurrence (month, day) | The date (month and day) on which the fault was first detected is displayed. Month and day. |
| Temperature - first occurrence | The value indicates the temperature (temperature sensor in the gateway) at the time the fault occurred. The temperature of the fibre optic transmitter is monitored: max 85°C. |
| Speed-first occurrence | The value indicates the vehicle speed at the time the fault occurred. |
| Supply voltage - first occurrence | The value indicates the voltage at the time the fault occurred. |
| Hourmeter - first occurrence | The value indicates the operating hours at the time the fault first occurred. |
| Last occurrence (month, day) | The date (month and day) on which the fault was last detected is displayed. |
| Temperature - last occurrence | The value indicates the temperature (temperature sensor in the gateway) at the time the fault was last detected. The temperature of the fibre optic transmitter (FOT) is monitored: max 85 °C. |
| Supply voltage - last occurrence | The value indicates the voltage at the time the fault last occurred. |
| Hourmeter - last occurrence | The value indicates the operating hours at the time the fault was last detected. |
FAULT MEMORY INFORMATIONS
Varying required/actual installed components list
When the 'automatic control module search' is complete, the following display '*' appears in front of the control module description 'PCM2 or CDR23' in the menu 'Control modules', as well as in the 'PCM2 MMI function selection menu' in front of the entry 'MOST required installed components list' if a difference in the required and actual installed components list is established by the Porsche System Tester II No. 9588 and there is no fault code in one of the fault memories of the MOST control modules.
If there is a fault code in one of the MOST control modules, the display '*' is only shown in the 'PCM2 MMI function selection menu'.
If there is a display in the menu Control module, an existing fault code has priority and a '#' is set.
Vehicle hand-over
The PCM2 is converted into production mode (low-current mode) in production. As known from other systems (alarm system, instrument cluster, roll-over bar), the PCM2 must be activated with the Porsche System Tester II No. 9588.
- Connect and start the Porsche System Tester II No. 9588 and switch on the ignition
- Select 'Special functions' in the Vehicle type menu and confirm with the [>>] key
- Select 'Vehicle hand-over' in the Control modules menu and confirm with the [>>] key
- Follow the instructions of the Porsche System Tester II No. 9588.
Coding country-specific tuner settings
- Connect and start the Porsche System Tester II No. 9588 and switch on the ignition
- Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key
- Select 'PCM2' in the Control units menu and confirm with the [>>] key
- Select 'PCM2 GW' in the Cayenne PCM2 function selection and confirm with the [>>] key
- Select 'Coding' in the Cayenne PCM2 GW function selection and confirm with the [>>] key
- Select 'Tuner parameters' in the PCM2 GW Coding function selection and confirm with the [>>] key.
- Take the country-specific code as it appears in the table and enter it in the form Code with the [F8] key
Country-specific tuner settings
The following country-specific tuner settings can be 'coded'
- Europe
- North America
- South America
- Australia
- Asia
- South Africa
- Japan
MOST switch
The MOST switch is part of the PCM2. It keeps the electrical MOST closed if no other MOST control module is optically connected to the MOST. The MOST switch is opened when a light signal is received from the connected MOST control modules.
The following adjustments can be coded
- MOST switch open
- MOST switch closed
Note. When the PCM2 is replaced, the coding must be performed in accordance with the vehicle equipment. When the 'Switch closed' parameter is set, the switch remains closed even in existing MOST control modules. Communication is then not possible.
Coding PCM2
- Connect and start the Porsche System Tester II No. 9588 and switch on the ignition
- Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key
- Select 'PCM2' in the Control units menu and confirm with the [>>] key
- Select 'PCM2 GW' in the PCM2 function selection and confirm with the [>>] key.
- Select 'Coding' in the PCM2 GW function selection and confirm with the [>>] key.
- Select 'PCM2 code' in the PCM2 GW coding and confirm with the [>>] key
- Take the PCM2 code from 'IPAS' and enter it in the form Code with the [F8] key
MMI tools
| WARNING | Danger! Danger of injury through triggering of driver's airbag Never hang the Porsche System Tester II No. 9588 over the steering wheel. Always place tools and special tools outside the functioning range of all airbags! |
Note. Plug contacts are optionally designed to suit the plug system. Operations on pins can cause contact problems. It is imperative to use suitable measurement tools, adapter plugs and test cables. The following testers are required for vehicle diagnosis
Scheme 49
Scheme 50
Scheme 51
Scheme 52
Scheme 53
Scheme 54
Scheme 55
Scheme 56
Connector A, black, power supply
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| A 1 | Not used | A 2 | Not used |
| A 3 | Not used | A 4 | Pin 30 + |
| A 5 | Antenna 12 V + | A 6 | Not used |
| A 7 | Not used | A 8 | Pin 31 |
CONNECTOR A PIN REFERENCE
Connector B, brown, loudspeaker output
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| B 1 | Bass, tweeter and treble loudspeaker, door RR + | B 2 | Bass, tweeter and treble loudspeaker, door RR |
| B 3 | Bass, tweeter and treble loudspeaker, door FR + | B 4 | Bass, tweeter and treble loudspeaker, door FR |
| B 5 | Bass, tweeter and treble loudspeaker, door LF + | B 6 | Bass, tweeter and treble loudspeaker, door LF |
| B 7 | Bass, tweeter and treble loudspeaker, door RL + | B 8 | Bass, tweeter and treble loudspeaker, door RL |
CONNECTOR B PIN REFERENCE
Connector C, yellow, loudspeaker output
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| C 1 | CAN Infotainment (high) | C 2 | CAN Infotainment (low) |
| C 3 | Not used | C 4 | Wake-up/diagnosis |
| C 5 | Not used | C 6 | Not used |
CONNECTOR C PIN REFERENCE
Connector D, green, microphone
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| D 7 | Not used | D 8 | Ground microphone |
| D 9 | Microphone 1 + | D 10 | Not used |
| D 11 | Not used | D 12 | Not used |
CONNECTOR D PIN REFERENCE
Connector E, blue, emergency call
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| E 13 | Not used | E 14 | Not used |
| E 15 | Not used | E 16 | Not used |
| E 17 | Not used | E 18 | Not used |
| E 19 | Not used | E 20 | Not used |
CONNECTOR E PIN REFERENCE
Connector F, antenna
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| F 1 | ZF MVHF socket COD K | F 2 | Shield |
CONNECTOR F PIN REFERENCE
Connector G, diversity antennas
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| G 1 | HF MVHF socket COD A | G 2 | Not used |
CONNECTOR G PIN REFERENCE
Connector H, MOST, optical
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| H 1 | Optical waveguide in | H 2 | Optical waveguide out |
CONNECTOR H PIN REFERENCE
| Pin | Designation | Pin | Designation |
|---|---|---|---|
| I 1 | GPS antenna | I 2 | Shield |
CONNECTOR I PIN REFERENCE
Connector K TV
| Pin | Bezeichnung | Pin | Bezeichnung |
|---|---|---|---|
| K 1 | Videosignal | K 2 | Abschirmung |
CONNECTOR K PIN REFERENCE
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 Infotainment
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 type | PCM2 GW | PCM2 MMI | CDR23 | Navigation | Harman amplifier | BOSE amplifier | CD changer | Telephone |
|---|---|---|---|---|---|---|---|---|
| ABS pulse number | X | |||||||
| Call automatically accepted | X | |||||||
| Display format | X | X | ||||||
| Configuration Options Handset | X | X | ||||||
| Date | X | X | ||||||
| Units | X | X | X | |||||
| Vehicle type vehicle coding | X | X | X | X | X | |||
| Vehicle version vehicle coding | X | X | X | X | X | |||
| Right/left-hand drive vehicle coding | X | X | X | X | X | X | ||
| Wheel size | X | |||||||
| GAL(NLB) | X | X | ||||||
| Height/width in per cent | X | |||||||
| Air conditioning | X | X | ||||||
| Country coding | X | X | X | |||||
| Main set-up menu | X | |||||||
| MOST required installed components list | X | X | ||||||
| Engine version | X | |||||||
| PCM2 code | X | X | X | X | ||||
| Porsche Assistance, international designation | X | |||||||
| Porsche Assistance, international number | X | |||||||
| Porsche Assistance menu | X | |||||||
| Porsche Assistance, national designation | X | |||||||
| Porsche Assistance, national number | X | |||||||
| Porsche workshop number | X | |||||||
| Production mode | X | X | X | |||||
| Tyre width | X | |||||||
| Tyre condition | X | |||||||
| Summer/winter time | X | X | ||||||
| Time-out | X | |||||||
| Tuner parameters | X | X | ||||||
| User data | X | |||||||
| Traffic broadcast loudspeaker boost | X | X | ||||||
| Time | X | X | ||||||
| Time zone | X | X |
CODING REFERENCE TABLE
Coding
It is possible to extract the PCM2 code and to code the PCM2 on a country-specific basis in the 'Modify coding' menu.
| 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 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select "Call automatically accepted" in the Cayenne 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 | Using this menu item, you can code the display format. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select "Display format" in the Cayenne 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 | Using this menu item, you can code the date. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne 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 | Using this menu item, you can code the relevant units. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne 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. The following selection is available: Metric, RoW (°C, litre, km) UK English (°C, gallon, mph) US English (°F, gallon, mph) |
| Vehicle type vehicle coding | Under this menu item, the PCM2 MMI corresponding to the vehicle type can be coded. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne 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 'Cayenne' in the menu and code with the [F8] key. |
| Vehicle version vehicle coding | Under this menu item, the PCM2 MMI corresponding to the vehicle version can be coded. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select "Vehicle version" in the Cayenne PCM2 GW function selection and confirm with the [>>] key Select the relevant version "Coupe, Cabrio, Targa" in the menu and code with the [F8] key. Select "the relevant units" from the menu item that is displayed and code them with the [F8] key. |
| Right/left-hand drive vehicle coding | Under this menu item, the PCM2 MMI corresponding to the vehicle version can be coded. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select "Right/left-hand drive vehicle coding" in the Cayenne PCM2 MMI coding function selection and confirm with the [>>] key. Select "Right/left-hand drive" from the menu item that is displayed and code it with the [F8] key The following selection is available: Right-hand drive Left-hand drive |
| GAL (noise-dependent loudspeaker boost - NLB) | This menu item can be used to appropriately code the noise-dependent loudspeaker boost. This menu time can be used to code the respective vehicle version: Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select "GAL" in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Value' corresponding to the desired volume and code with the [F8] key. |
| Air conditioning with or without | Using this menu item, you can code the relevant vehicle version. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select "Air conditioning with or without" in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'With or without' in the menu corresponding to the equipment and code with the [F8] key. |
| Country coding | Using this menu item, you can code the country code. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select "GAL" in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Value' corresponding to the desired volume and code with the [F8] key. |
| Country coding | Using this menu item, you can code the country code. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select "Country coding" in the Cayenne 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 set-up menu | |
| PCM2 code | Under this menu item, the PCM2 code can be coded after replacing the PCM2. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select "PCM2 code" in the Cayenne 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 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Porsche Assistance, international' in the Cayenne PCM2 MMI coding function selection and confirm with the [>>] key. In the Modify PCM MMI coding function selection, use the direction arrows to input 'Porsche Assistance, international' 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 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Porsche Assistance, international number' in the Cayenne PCM2 MMI coding function selection and confirm with the [>>] key. In the Modify PCM MMI coding function selection, use the direction arrows to input 'Porsche Assistance, international number' and code with the . |
| Porsche Assistance, national 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 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Porsche Assistance, international number' in the Cayenne PCM2 MMI coding function selection and confirm with the [>>] key. In the Modify PCM MMI coding function selection, use the direction arrows to input 'Porsche Assistance, international' and code with the . |
| 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 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Porsche Assistance, international number' in the Cayenne PCM2 MMI coding function selection and confirm with the [>>] key. In the Modify PCM MMI coding function selection, use the direction arrows to input 'Porsche Assistance, international number' and code with the . |
| Summer/winter time | Using this menu item, you can code the summer/winter time. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Porsche Assistance, international number' in the Cayenne PCM2 MMI coding function selection and confirm with the [>>] key. In the PCM2 MMI Modify coding function selection, code 'summer/winter time' . |
| Time-out | Using this menu item, you can code the timeout. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Timeout' in the Cayenne PCM2 MMI coding function selection and confirm with the [>>] key |
| Traffic broadcast loudspeaker boost | Using this menu item, you can code the traffic broadcast loudspeaker boost. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Traffic broadcast loudspeaker boost' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. In the Modify PCM MMI coding function selection, use the direction arrows to input 'Traffic broadcast loudspeaker boost' and code with the . |
| Time | Using this menu item, you can code the time. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Time' in the Cayenne PCM2 MMI coding function selection and confirm with the [>>] key In the Modify PCM MMI coding function selection, use the direction arrows to input 'Time' and code with the . |
| Time zone | Using this menu item, you can code the time zone. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Coding' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Select 'Time zone' in the Cayenne PCM2 MMI coding function selection and confirm with the [>>] key In the Modify PCM MMI coding function selection, use the direction arrows to input 'Time zone' and code with the . |
CODING REFERENCE TABLE
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.
Scheme 57
Gateway
The gateway is integrated in the PCM2. Together with the MMI, it is a fixed component of each PCM2. It provides a connection to CAN Infotainment via its nodes. Diagnostic and useful data is exchanged with the CAN via these nodes.
It creates links to the following systems
- CAN Infotainment
- Media Oriented Systems Transport (MOST), internal (electrical)
- Voice control system (VOCS) (optional/insertion)
- Navigation (optional/insertion)
- Man Machine Interface (MMI).
- Single CD
- Media Oriented Systems Transport (MOST), external bus (optical)
- Amplifier optional (Harman or BOSE)
- CD changer
- Telephone/telematics
Actual installed components list/required installed components list
All MOST control modules that are connected to the PCM2 are entered in the 'required installed components list'. An actual installed components list is written and saved when the PCM2 is started.
Actual values
It is possible to read out the unlock counter under the 'Actual values' menu item.
| Menu item | Function |
|---|---|
| Unlock counter | Under this menu item, it is possible to check the electrical and optical MOST during troubleshooting. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the PCM2 function selection and confirm with the [>>] key Select 'Actual values' in the PCM MMI function selection and confirm with the [>>] key. Select "Unlock counter" in the PCM MMI actual values function selection, select with the [>] key and confirm with the [>>] key. Read out values from the display field. |
ACTUAL VALUES MENU REFERENCE
Lock/unlock
There is a lock present when the MOST signal sent by the MMI (electronically or optically via the optical waveguide) can be recognized by the connected MOST control units.
Man Machine Interface (MMI)
The MMI is part of the PCM2 (on the mainboard). It runs the gateway commands via the wake-up signal line and the distribution line diagnosis.
MOST component check
Note. When there is a customer complaint or identifiable problems but no fault code entries, firstly the 'MOST component check' is to be selected in the PCM2 function selection menu and then the 'MOST system check' is to be carried out.
The MOST component check can be reached via the menu PCM2 function selection. This comprises a summary of the following check processes
- MOST System check (ignition on.)
- Diagnosis, open circuit in distribution line (ignition on.)
- Optical performance check
- Data transmission check
- MOST system check (with engine running)
- Ring break diagnosis (with engine running)
The MOST components check 'MOST system check' is to be carried out when the display indicates 'unavailable MOST control modules'. If no fault code is stored, the '*' symbol indicates a 'varying required and actual installed components list' in the Control modules menu in front of the 'PCM2' system and in the 'PCM2 MMI function selection' in front of the selection 'MOST required installed components list'. A comparison of these two lists can determine missing components.
MOST System check (ignition on.)
This check must only be carried out when the engine is not running.
| Menu item | Function |
|---|---|
| MOST System check (ignition on.) | Using this menu item, a MOST system check can be carried out with the ignition on. The following checks are carried out automatically and their results are displayed. Gateway start-up condition is read out. MOST installed components list (required and actual installed components list) is analysed. Start the ring break diagnosis. The results are displayed by the Porsche System Tester II No. 9588. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'MOST components check' in the PCM2 function selection and confirm with the [>>] key. Select "MOST system check (ignition on)" in the Cayenne PCM2 MOST components check function selection and confirm with the [>>] key. |
MOST SYSTEM CHECK (IGNITION ON) REFERENCE
Optical performance check
| Menu item | Function |
|---|---|
| Optical performance check | The optical performance check allows the performance of the MOST to be checked optically. The following checks are carried out automatically: MOST installed components list (required and actual installed components list) is analysed. External MOST components display. Carrying out the performance check. The result is displayed by the tester. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'MOST components check' in the PCM2 function selection and confirm with the [>>] key. Select "Optical performance check" in the Cayenne PCM2 MOST components check function selection and confirm with the [>>] key. Follow the instructions of the tester. |
OPTICAL PERFORMANCE CHECK REFERENCE
Data transmission check
| Menu item | Function |
|---|---|
| Data transmission check | Using this menu item, the quality of the data transmission can be assessed. This is a counter which leads to an increase in the value if faults occur within a certain time period. The check is carried out continuously at predermined intervals. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'MOST components check' in the PCM2 function selection and confirm with the [>>] key. Select "Data transmission check" in the Cayenne PCM2 MOST components check function selection and confirm with the [>>] key. |
DATA TRANSMISSION CHECK REFERENCE
MOST system check (with engine running)
| Menu item | Function |
|---|---|
| MOST system check (with engine running) | Using this menu item, a MOST system check can be carried out with the ignition on. The following checks are carried out automatically and their results are displayed. Gateway start-up condition is read out. MOST installed components list (required and actual installed components list) is analysed. Ring line diagnosis. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'MOST components check' in the PCM2 function selection and confirm with the [>>] key. Select "MOST system check (bottom)" in the Cayenne PCM2 MOST components check function selection and confirm with the [>>] key. Follow the instructions of the tester. Whenever there are several ring breaks, the 1st ring break is displayed in the following order: PCM2 Gateway > external amplifier External amplifier > CD changer CD changer > telephone Telephone > PCM2 MMI Afterwards, the check is broken off Start the optical performance check. |
MOST SYSTEM CHECK (WITH ENGINE RUNNING) REFERENCE
MOST - optical/electrical
MOST signals are transferred electrically within the PCM2 and optically outside of the PCM2. Internally, the PCM2 consists of at least 2 nodes (GW and MMI), which are installed in the device and can also be expanded to four nodes by adding the navigation and VOCS nodes.
The data is transferred outside of the PCM2 via the optical waveguide, which creates a connection to the nodes in the external MOST control modules such as external amplifiers and/or telephone/telematics (depending on the equipment). The gateway node constitutes the connection to CAN Infotainment.
The MOST switch is part of the PCM2. It keeps the electrical MOST closed if no other MOST control module is optically connected to the MOST. The MOST switch is opened when a light signal is received from the connected MOST control modules.
Note. When the PCM2 is replaced, the coding must be performed in accordance with the connected MOST control modules. When the 'Switch closed' parameter is set, the switch remains closed even in existing MOST control modules. Communication is then not possible.
The navigation module is designed as a module box, which can be inserted in the PCM2 as an option. After the insertion, an electronic switch is opened automatically and the module is integrated into the MOST ring.
Input signals
The following queries can be run using this menu item
- Key code
- Increment steps
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 |
|---|---|
| Key code | Under this menu item, it is possible to check that the operating buttons are functioning during troubleshooting. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Input signals' in the PCM2 MMI function selection and confirm with the [>>] key. Select 'Key code' in the Cayenne PCM2 MMI input signals function selection and confirm with the [>>] key. On the Porsche System Tester II No. 9588', key code' is displayed. The function is activated by selecting with the key and by pressing the [>>] key. If functioning correctly, the relevant code appears on the tester's display field when the operating buttons are activated |
| Increment steps | This menu item shows the current status of the operating button. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the PCM2 function selection and confirm with the [>>] key Select 'Input signals' in the PCM2 MMI function selection and confirm with the [>>] key. Select 'Increment steps' in the Cayenne PCM2 MMI input signals function selection and confirm with the [>>] key Select the Increment steps menu item and confirm with the [>>] key On the Porsche System Tester II No. 9588, 'Incrementsteps' is displayed. The function is activated by selecting with the key and by pressing the [>>] key. If functioning correctly, the relevant code appears on the tester's display field when the operating buttons are activated |
INPUT SIGNALS MENU REFERENCE
Single CD
The CD player is part of the PCM2. It is used to update the navigation system.
Voice control system (VOCS)
The VOCS is designed as a module box which can be pushed into the PCM2 (optional). After the insertion, an electronic switch is opened and the module is integrated into the MOST ring.
Drive links
Drive links of the PCM2 can be activated with this menu item. This allows the function of the drive links to be assessed very quickly.
The following drive links can be activated with the Porsche System Tester II No. 9588
- Display color black
- Display color "colored bars"
- Display color blue
- Display color red
- Display color green
- Display color white
- Set default values
- Ring break diagnosis
- Ring break line diagnosis
Note. The activated drive link is automatically switched off after approximately 20 seconds.
| Menu item | Function |
|---|---|
| Display colour black | Using this menu item, the function Display colour black can be checked. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Drive links' in the PCM2 MMI function selection and confirm with the [>>] key. Select "Display colour black" in the PCM2 MMI drive link function selection and confirm with the [>>] key. The display must show the correct colour. Proceed in the same way with the following tests. Display colour "coloured bars" Display colour blue Display colour red Display colour green Display colour white |
| Set default values | Using this menu item, you can read out the set default values from the PCM2 MMI. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units selection menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Set default values' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Read out values from the display field. |
| Ring break diagnosis | Using this menu item, a ring break diagnosis can be carried out. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control units menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Ring break diagnosis' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Read out values from the display field. |
| Ring break line diagnosis | Under this menu item, it is possible to check the electrical and optical MOST during troubleshooting. Connect and start the Porsche System Tester II No. 9588 and switch on the ignition. Select 'Cayenne' in the Vehicle type menu and confirm with the [>>] key Select 'PCM2' in the Control module menu and confirm with the [>>] key Select 'PCM2 MMI' in the Cayenne PCM2 function selection and confirm with the [>>] key Select 'Ring break line diagnosis' in the Cayenne PCM2 MMI function selection and confirm with the [>>] key. Read out values from the display field. |
DRIVE LINKS MENU REFERENCE
PCM2 control module (head unit)
The PCM2 control module (head unit) includes the following components
Internal
PCM2 gateway
PCM2 Man Machine Interface (MMI)
Internal amplifier (optional, depending on the equipment)
Tuner
Single CD
Navigation (optional/insertion)
VOCS (voice control system) (optional/insertion)
Controller Area Network (CAN) Comfort
MOST switch
External
External amplifier (optional, Harman or BOSE)
CD changer (CDC), (optional)
Telephone/telematics (optional)
The PCM2 consists of at least two but a maximum of four MOST nodes, (Gateway, MMI and Navigation and VOCS (optional)), which communicate with each other electronically via the MOST. Data is transferred outside of the PCM2 via the optical MOST.
Telephone/telematics
The telephone/telematics feature is available as an option and is linked to the PCM2 via the optical waveguide.
Tuner
The tuner is part of the PCM2 (on the main board).
Unlock counter
Interruptions occur in the system if perfect communication is no longer possible. If the relevant threshold values are exceeded, an entry is recorded in the appropriate control module and the 'unlock counter' is incremented.
External amplifier
The external amplifier (Harman or BOSE) is available as an optional feature and is linked to the PCM2 via the optical waveguide.
Internal amplifier
The internal amplifier is part of the PCM2 (installed on the main board).
Wake-up function
In an idle state, all control modules that are connected to the PCM2 are in sleep mode. When the PCM2 is switched on, 'the light' which is reinforced by the connected MOST control modules and forwarded is switched on via the gateway.
Possible cause of fault
- Fuse faulty
- EEPROM fault
Note. CAN Infotainment is connected to the following control modules: Instrument cluster PCM2 Wiper motor (with integrated control module) Compass control module Additional heating control module
Note. The MOST optical waveguide is connected to the following control modules: PCM2 Amplifier CD changer Telephone/telematics
- Internal short circuit
Single CD drive overheating
- Battery temperature too high
- Exterior and interior temperatures very high
- Operation of heater
- Audio CD damaged or inserted incorrectly
- Single CD drive faulty.
- Audio CD damaged or inserted incorrectly
- Ring break diagnosis line: short circuit to ground/ B+ or open circuit
- The recipient MOST control module is faulty
- PCM2 faulty
Note. The ring break diagnosis line is connected to the following MOST control modules: PCM2 gateway PCM2 MMI PCM2 navigation (optional) The ring break diagnosis line and the MOST optical waveguide are connected to the following control modules: External amplifier (Harman or BOSE) (optional) CD changer (optional) Telephone/telematics (optional)
Scheme 58
Affected pin
PCM2 plug C, pin -4
- An optical (optical waveguide) or electrical (PCM2) open circuit in the ring
- MOST switch in production mode
- An optically/electrically faulty MOST control module is connected to the MOST
Note. The MOST optical waveguide is connected to the following control modules: Amplifier CD changer Telephone/telematics
Scheme 59
- Incorrect/incompatible software version
- Third-party software components
Note. The MOST optical waveguide is connected to the following control modules: Amplifier CD changer Telephone/telematics
- Coaxial cable not connected correctly
- Coaxial cable faulty
- TV tuner faulty