Porshe 911 (997). Manual - part 688

Unscrewing fastening screws from AWS holder

2. Unscrew the three fastening screws -1- for the AWS holder on the seat bracket.

3. Release electric connector on AWS control unit -a- , unplug and tilt the AWS holder to the right

side.

Unscrewing fastening screws for AWS control unit.

4. Unscrew the three fastening screws -2- of the AWS control unit and remove the control unit.

Installing AWS control unit

Installing AWS control unit

Diagnostic system: reading out fault memory and activating systems

Removing AWS control unit

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Screwing AWS control unit and holder together

1. Position AWS control unit on the holder and screw it down using the three fastening screws -2-

.

Screwing AWS holder to seat bracket

2. Position AWS holder on the seat bracket and screw it down using the three fastening screws -1-

.

3. Push electric connector onto AWS control unit until it is felt to engage.

4. Insert seat central connector into AWS holder and clamp by turning to the

right.

Subsequent work

Subsequent work for AWS control unit

Install right front 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]

Diagnostic system: reading out fault memory and activating systems

Installing AWS control unit

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Connect the battery and carry out work instructions after disconnecting the battery. → 2706IN Work
instructions after disconnecting the battery

1. If the AWS control unit has been replaced, the new AWS control unit must be taught and calibrated under

AWSControl unit replacement

. → 696819 Removing and installing AWS control unit - section on

"Programming"→ 6968K2 Calibrating AWS control unit - section on "Calibrating"

Programming AWS control unit

Reading and writing values for AWS control unit

Note

The PIWIS tester 9718 instructions take precedence and in the event of a discrepancy these are the
instructions that must be followed. Deviations may occur with later software versions.
The procedure described here has been structured in general terms; different text or additions may appear in
the PIWIS tester 9718.

1. Replace control unit. → 696819 Removing and installing AWS 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.

2. Connect battery charger to the vehicle. Move passenger's seat longitudinally until flush with the seat rails

and to its lowest position.

3. Connect the Porsche System Tester PIWIS Tester 9718 to the vehicle and start the System Tester. Switch

on ignition. Press >> to continue.

4. Select vehicle type.

5. Switch from the vehicle type to the list of control units >> .

6. Select AWS with the cursor keys and press the >> key.

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

8. The Tester displays several messages and instructions relating to the individual work steps until the

message Control unit replacement was completed successfully appears. Press >> .

9. To check the system, select the Actual values menu under the AWS control unit. Then press >> .

9.1. Select the Weight group (0-4) and Gross weight calibrated options.

9.1.1. If there is no weight on the passenger's seat, compare values (see table below) using the PIWIS

Diagnostic system: reading out fault memory and activating systems

Subsequent work for AWS control unit

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Tester. The Passenger Airbag Off indicator light in the centre console must not come on.

9.1.2. Place the special tool test weight P 9742 on the passenger's seat. The Passenger Airbag Off indicator

light in the centre console must come on. Compare values (see table below) using the PIWIS Tester.

9.1.3. Get an assistant, for example, to sit on the passenger's seat. The Passenger Airbag Off indicator light in

the centre console must not come on. Compare values (see table below) using the PIWIS Tester.

Test state

Weight group (0-4) Gross weight calibrated

No weight on the passenger's seat.

0

→ Control value: 0 kg +/-1 kg

Special tool test weight P 9742 on passenger's seat

1

→ Control value: 6.7 kg +/-1
kg

Get a person weighing at least 65 - 85 kg to sit on the
passenger's seat.

2, 3 or 4

→ Control value: Weight of
test person kg +/-1 kg

10. Read out and erase the fault memories in the Airbag and AWS control unit, perform a test drive and then

read out the fault memories again. If faults are found, determine the cause using the PIWIS Tester and
correct the faults.

997110, 997111, 997120, 997121, 997310, 997311, 997320, 997321, 997410, 997411, 997430, 997431,
997610, 997611, 997620, 997621

WARNUNG

Gefahr des Verlusts der Text-Bild-Zuordnung beim Ausdruck.

Aus technischen Gründen kann derzeit nicht ausgeschlossen werden, dass trotz
einwandfreier Darstellung auf dem Bildschirm beim Ausdruck der
Zusammenhang von Text und zugehörigem Bild verloren geht.

• 

Wird der Fehler nicht bemerkt, besteht die Gefahr, daß Arbeiten nicht korrekt
durchgeführt werden und es dadurch zu Personen- und Sachschäden kommt.

• 

→ Vergleichen Sie deshalb nach dem Druckvorgang unbedingt die Ausdrucke mit der
Bildschirmdarstellung. Korrigieren Sie die Ausdrucke im Fehlerfall so, daß der Inhalt der
Bildschirmdarstellung zutreffend wiedergegeben wird.

WARNING

Danger of losing text-figure correspondence when printing out.

For technical reasons, it can currently not be ruled out that the correspondence
between text and associated figure can be lost when it is printed out, even though
the display on the screen is correct.

• 

If the fault is not noticed, there is the danger that work will not be performed
correctly which can cause injury and damage.

• 

Diagnostic system: reading out fault memory and activating systems

Reading and writing values for AWS control unit

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