911 Carrera 4 Cabriolet (996) F6-3.4L (1999)
Identification
The diagnosis software number and the part numbers for the PCM2 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 'External Harman amplifier' in the 911 (996) PCM2 function selection and confirm with the >> key.
5. Select 'Identification' in the 911 (996) external Harman amplifier function selection and confirm with the >> key.
6. "Diagnosis software number; PCM2 part number." appears on the display.
Actual Values
It is possible to read out the following values under the 'Actual values' menu item:
-
Vehicle speed
-
Transmission errors
-
Unlock counter
-
Supply voltage
Menu item
Function
-
Vehicle speed
You can read out the speed during troubleshooting under 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 'External Harman amplifier' in the 911 (996) PCM2 function selection and confirm with the >> key.
-
Select 'Actual values' in the 911 (996) external Harman amplifier function selection and confirm with the >> key.
-
Select 'Speed' in the 911 (996) external Harman amplifier actual values function selection and confirm with the >>
key.
-
Read out values from the display field.
-
Transmission errors
It is possible to check the electrical and optical MOST during troubleshooting under 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 'External Harman amplifier' in the 911 (996) PCM2 function selection and confirm with the >> key.
-
Select 'Actual values' in the 911 (996) external Harman amplifier function selection and confirm with the >> key.
-
Select 'Transmission errors' in the 911 (996) external Harman amplifier actual values function selection and confirm
with the >> key.
-
Read out values from the display field.
-
Unlock counter
It is possible to check the electrical and optical MOST during troubleshooting under 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 'External Harman amplifier' in the 911 (996) PCM2 function selection and confirm with the >> key.
-
Select 'Actual values' in the 911 (996) external Harman amplifier function selection and confirm with the >> key.
-
Select the "Unlock counter" menu item using the > key and confirm your selection with the >> key.
-
Read out values from the display field.
-
Supply voltage
You can check the supply voltage of the external Harman amplifier during troubleshooting 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 'External Harman amplifier' in the 911 (996) PCM2 function selection and confirm with the >> key.
-
Select 'Actual values' in the 911 (996) external Harman amplifier function selection and confirm with the >> key.
-
Select 'Supply voltage' in the 911 (996) external Harman amplifier actual values function selection and confirm with
the >> key.
-
Read out values from the display field.
Lock/Unlock
A lock occurs when the signal sent from the MMI via the wake-up/ diagnosis distribution line is understood and answered by the connected MOST
control modules; this results in a 'lock (connection)'. The lock is maintained until the signal disappears, i.e. an 'unlock' occurs.
Man Machine Interface (MMI)
The MMI is part of the PCM2 (on the main board). It runs the gateway commands via the wake-up signal line and the distribution line diagnosis. If
control modules fail, this is reported to the gateway and saved there.