Porshe 911 (997). Manual - part 791

Destruction of the control module.

• 

→ During programming, it is essential to guarantee the power supply for the Porsche System tester. It is

essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.

→ Prior to disconnecting the control module, switch off the ignition and remove the ignition key.

Note

If the control unit must be replaced, first read out the values using the PIWIS Tester 9718.

Installation Location:

Installation position shown on the 911

Unscrewing fastening screws

1. Unscrew the two fastening screws -1- .

Diagnostic system: reading out fault memory and activating systems

Removing control unit for memory seat adjustment

3321

Disconnecting electric connectors on the control unit

2. Release electric connectors -A- on the control unit and disconnect them.

Installing control unit for memory seat adjustment

Installing control unit for memory seat adjustment

Inserting electric connectors into control unit

1. Insert electric connectors into control unit until they are felt to engage.

Screwing control unit to seat

2. Position control unit on the holder and screw it down using the two fastening screws

-1-

 .

Diagnostic system: reading out fault memory and activating systems

 Installing control unit for memory seat adjustment

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Subsequent work

Subsequent work for control unit for memory seat adjustment

Install seat. → 720119 Removing and installing front seat - section on "Installing" [997110 997120 997310
997320 997410 997430 997610 997620]→ 720119 Removing and installing front seat - section on
"Installing" [997111 997121 997311 997321 997411 997431 997611 997621]

Programming control unit

Reading out and printing out values

WARNING

Sudden voltage interruption of the power supply to the control module.

Destruction of the control module.

• 

→ During programming, it is essential to guarantee the power supply for the Porsche System tester. It is

essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.

→ Prior to disconnecting the control module, switch off the ignition and remove the ignition key.

Note

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.

1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on the ignition. >>

Continue.

2. Select the vehicle type.

3. Move from vehicle type to the list of control units and press

>> .

4. Select the relevant control unit using the cursor keys and press

>> .

Diagnostic system: reading out fault memory and activating systems

Installing control unit for memory seat adjustment

3323

5. Select Control unit replacement with the cursor keys and press the >> key.

6. Select Read out values (codings) with the cursor keys and press the >> key.

7. The message Codes successfully read out appears on the screen of the Porsche System Tester. Press >> .

8. Switch off ignition and replace control unit.

9. Switch on ignition. Select the vehicle type, choose the Special functions menu, start Vehicle handover

and follow the instructions on the Tester.

10. Erase All fault memories.

11. Using the >> key, move from the vehicle type to the list of control units. Perform the automatic control

unit search.

12. After replacing the control unit, the data that was previously read out (see Item 6) is reloaded under the

Write in data

 menu. Press >> .

13. The System Tester displays the message Coding write-in complete. Press

>> .

14. Go to the Coding menu by pressing >> , compare the coding with the vehicle equipment and code

it if necessary.

15. Check the operation of the memory switch, read out the fault memory and erase it if necessary.

Programming control unit

WARNING

Sudden voltage interruption of the power supply to the control module.

Destruction of the control module.

• 

→ During programming, it is essential to guarantee the power supply for the Porsche System tester. It is

essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.

→ Prior to disconnecting the control module, switch off the ignition and remove the ignition key.

Note

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.

1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on the ignition. >>

Continue.

Note

If the control unit values cannot be read out, proceed according to the instructions given here.

2. Select the vehicle type, choose the Special functions menu, start Vehicle handover and follow the

instructions on the Tester.

3. Erase All fault memories.

Diagnostic system: reading out fault memory and activating systems

Reading out and printing out values

3324