Engine Control Module: Service and Repair
WM 247019 Removing and installing DME control unit
Tools
Technical values
Preliminary work
1. Detach trim panel for rear left luggage compartment. -> 700619 Removing and installing rear luggage compartment trim - section on "Removing"
2. If the DME control unit has to be replaced, the values must be read out of the control unit prior to removal. -> 247019 Removing and installing DME control unit - section on "Programming" Service and Repair
3. PIWIS Tester 9718 must be connected to the vehicle before starting the System Tester. Switch on ignition. Press >> to continue.
4. Select vehicle type. Press >> to continue.
5. Carry out an automatic control unit search.
6. Select DME/DFI and press >>.
7. Select Control unit programming and press >>.
8. Select Read out vehicle data (Vehicle data) and press >>.
9. The Tester screen displays the message Vehicle data has been read out >>.
10. After replacing the DME control unit, the vehicle data is uploaded when the Program control unit menu item is selected.
Removing DME control unit
Installation position of DME control unit
NOTICE
Voltage peaks
- Risk of damage to load or to the control unit
-> Remove the ignition key and switch off load before disconnecting or removing load.
1. Remove DME control unit.
1.1. Screw off the three fastening nuts -1- on the DME control unit.
1.2. Place DME control unit in the luggage compartment.
Removing DME control unit
2. Pull off connectors on the DME control unit.
2.1. Release -arrows A- and pull off -arrows B- the five connectors.
2.2. Remove DME control unit.
Pulling off connectors on DME control unit
Installing DME control unit
1. Plug in connectors on the DME control unit.
1.1. Push in connectors on the DME control unit -arrows- until they engage securely.
1.2. Plug in connectors on the DME control unit -arrows- and lock connectors with the locking mechanism.
Plugging in connectors on DME control unit
2. Install DME control unit.
2.1. Place DME control unit in installation position.
2.2. Tighten fastening nuts -1-. => Tightening torque: 10 Nm (7.5 ftlb.)
Installing DME control unit
Subsequent work
1. Secure trim panel for rear left luggage compartment. -> 700619 Removing and installing rear luggage compartment trim - section on "Installing"
2. Program the DME control unit using the PIWIS Tester 9718. -> 247019 Removing and installing DME control unit - section on "Programming" Service and Repair
Programming DME control unit
Reading out DME control unit
NOTICE
Voltage drop
- Risk of irreparable damage to control unit
- Risk of damage to control unit
- Fault entries in the control unit
- Coding in the control unit is aborted
- Malfunctions in control unit, even during programming
-> Prior to disconnecting the control unit, switch off the ignition and remove the ignition key.
-> Ensure that the power supply is not interrupted during programming.
-> Connect a battery charger with a current rating of at least => Nominal value: 40 A to the vehicle battery.
Information
The PIWIS Tester 9718 instructions take precedence since the description may be different with later Tester releases.
The procedure described here has been structured in general terms; different text or additions may appear in the PIWIS Tester 9718.
1. PIWIS Tester 9718 must be connected to the vehicle before starting the System Tester. Switch on ignition. Press >> to continue.
2. Select vehicle type. Press >> to continue.
3. Carry out an automatic control unit search.
4. Select DME with the cursor keys and press the >> key.
5. Select Program control unit with the cursor keys and press the >> key.
6. Select Read out vehicle data (Vehicle data) using the cursor keys and press >>.
7. The message Reading vehicle data will appear on the Tester screen.
8. Switch off ignition and replace control unit. -> 247019 Removing and installing DME control unit - section on "Removing" Service and Repair
9. After replacing the DME control unit, the vehicle data is uploaded when the Program control unit menu item is selected.
Programming new DME control unit
Information
Depending on the software version of the PIWIS Tester, a new DME control unit can be asked for the "old DME programming code". In this case, enter the code from IPAS which is also used for the "new DME programming code".
NOTICE
Voltage drop
- Risk of irreparable damage to control unit
- Risk of damage to control unit
- Fault entries in the control unit
- Coding in the control unit is aborted
- Malfunctions in control unit, even during programming
-> Prior to disconnecting the control unit, switch off the ignition and remove the ignition key.
-> Ensure that the power supply is not interrupted during programming.
-> Connect a battery charger with a current rating of at least => Nominal value: 40 A to the vehicle battery.
Information
If a new DME control unit is to be installed in a vehicle, the DME code specified in the PPN and the immobiliser code must be entered in the DME control unit.
The codes are available from the PPN or from your importer.
Follow the instructions on the Tester.
Later versions of the software may display slightly different text or require a slightly different procedure. The instructions you receive from the Tester itself take precedence over this description.
In some countries (currently USA, Canada) the Ready status must be obtained following a test drive or by using the Porsche System Tester after the DME control unit has been programmed. If in doubt, contact the relevant importer.
1. PIWIS Tester 9718 must be connected to the vehicle before starting the System Tester. Switch on ignition. Press >> to continue.
2. Select vehicle type. Press >> to continue.
Information
If the vehicle data cannot be read out due to a defective control unit, for example, the vehicle data will have to be written into the control unit manually when programming is complete.
Read out vehicle data. -> 247019 Removing and installing DME control unit - section on "Preliminary work"
3. Select DME menu and press >>.
4. Select Control unit programming menu and press >>.
5. Select Program control unit and press >>. Follow the instructions displayed on the Tester.
6. Enter Vehicle Ident. No., press >> and confirm with F7.
Information
This relates only to a new DME control unit.
If the old programming code and the old immobiliser code is requested for a new control unit, 000000 must be entered for the old programming code and 0000000000 for the old immobiliser code.
This procedure depends on the Tester software and the data version on the new control unit.
7. Enter the DME programming code (PPN) and press >>. Then confirm your entry by pressing F7.
8. Enter the new enabling code (PPN) and press >>. Then confirm your entry by pressing F7.
9. Select the vehicle type if required and press >>.
10. Specify transmission type and press >>.
11. Specify exhaust standard and press >>.
Information
- During programming, the electric radiator fans may start.
12. Start programming by pressing F8. The data and programming status is then loaded on to the DME control unit. Do not interrupt the programming sequence. Observe Tester instructions.
13. For the learning and adaptation routine of the throttle valve (electronic throttle), switch the ignition off, remove ignition key, insert ignition key and switch on ignition for at least 40 seconds without starting the engine. Do not actuate accelerator pedal. This completes the adaptation of the throttle adjusting unit and the programming sequence is complete.
14. In the DME menu go to Coding, code Cruise control present, not present.
If the vehicle data could not be read out of the old DME control unit, the following data (see Note below) must be entered manually in the DME control unit.
Information
The following vehicle data must be entered manually into the DME control unit.
- Vehicle identification number
- Order type
- Country code
- Engine type
- Engine number
- Transmission type
- Transmission number
15. On the Vehicle data screen, compare the vehicle data (PPN) with the actual vehicle and enter data specific to the vehicle if necessary.
16. Read out the fault memories of all control units and delete the DME control unit fault on every control unit connected to the CAN.
17. Start the engine.
18. Carry out a test drive and read out the fault memory again.
Programming DME control unit
NOTICE
Voltage drop
- Risk of irreparable damage to control unit
- Risk of damage to control unit
- Fault entries in the control unit
- Coding in the control unit is aborted
- Malfunctions in control unit, even during programming
-> Prior to disconnecting the control unit, switch off the ignition and remove the ignition key.
-> Ensure that the power supply is not interrupted during programming.
-> Connect a battery charger with a current rating of at least => Nominal value: 40 A to the vehicle battery.
Information
If a new DME control unit is to be installed in a vehicle, the DME code specified in the PPN and the immobiliser code must be entered in the DME control unit.
The codes are available from the PPN or from your importer.
Follow the instructions on the Tester.
Later versions of the software may display slightly different text or require a slightly different procedure. The instructions you receive from the Tester itself take precedence over this description.
If a DME control unit from a different vehicle with ME 7.8 is being used, proceed as follows. As a check, the immobiliser code of the vehicle in which the control unit is being installed (NEW) and of the vehicle from which the control unit has been removed (OLD) is required.
In some countries (currently USA, Canada) the Ready status must be obtained following a test drive or by using the Porsche System Tester after the DME control unit has been programmed. If in doubt, contact the relevant importer.
1. PIWIS Tester 9718 must be connected to the vehicle before starting the System Tester. Switch on ignition. Press >> to continue.
2. Select vehicle type. Press >> to continue.
3. Read out vehicle data. -> 247019 Removing and installing DME control unit - "Preliminary work" section
4. Select DME menu and press >>.
5. Select Control unit programming menu and press >>.
6. Select Program control unit and press >>. Follow the instructions displayed on the Tester.
7. Enter Vehicle Ident. No., press >> and confirm with F7.
8. Enter the old DME (PPN) programming code and press >>. Then confirm your entry by pressing F7.
9. Enter the new DME (PPN) programming code and press >>. Then confirm your entry by pressing F7.
10. Enter the old immobiliser code (PPN) and press >>. Then confirm your entry by pressing F7.
11. Enter the new immobiliser code (PPN) and press >>. Then confirm your entry by pressing F7.
12. Select the vehicle type if required and press >>.
13. Specify transmission type and press >>.
14. Specify exhaust standard and press >>.
Information
- During programming, the electric radiator fans may start.
15. Start programming by pressing F8. The data and programming status is then loaded on to the DME control unit. Do not interrupt the programming sequence. Observe Tester instructions.
16. For the learning and adaptation routine of the throttle valve (electronic throttle), switch the ignition off, remove ignition key, insert ignition key and switch on ignition for at least 40 seconds without starting the engine. Do not actuate accelerator pedal. This completes the adaptation of the throttle adjusting unit and the programming sequence is complete.
17. Select Coding in the DME menu and enter coding for cruise control present or not present.
18. On the Vehicle data screen, compare the vehicle data (PPN) with the actual vehicle and enter data specific to the vehicle if necessary.
19. Read out the fault memories of all control units and delete the DME control unit fault on every control unit connected to the CAN.
20. Start the engine.
21. Carry out a test drive and read out the fault memory again.