Porshe 911 (997). Manual - part 277

The steering angle sensor must be calibrated if the previous wheel alignment values (on rear and/or front axle)
were changed.

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.

• 

→ Therefore, always compare printouts with the screen display after printing them out. Correct
the printouts if they are faulty so that the content of the screen display matches that on the
printouts.

AVERTISSEMENT

Risque de perte de la correspondance texte-illustration lors de l'impression papier.

Pour des raisons techniques, il ne peut pas être exclu à l'heure actuelle que, même
en cas d'affichage correct à l'écran, la correspondance entre le texte et l'illustration
puisse être erronée sur l'impression papier.

• 

Si l'erreur passe inaperçue, on court le risque d'exécuter certaines opérations de
manière incorrecte pouvant conduire à des dommages corporels et matériels.

• 

→ Comparez impérativement pour cette raison les impressions papier avec l'affichage à l'écran.

Diagnostic system: reading out fault memory and activating systems

Front axle

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Corrigez-les en cas d'erreur de manière à reproduire correctement l'affichage à l'écran.

ATTENZIONE

Pericolo di perdita dell'abbinamento testo-immagine nella stampa.

Per motivi tecnici non è escluso che, nonostante la rappresentazione sullo schermo
risulti perfetta, durante la stampa venga persa la corrispondenza fra testo e
relativa immagine.

• 

Se tale difetto non viene rilevato vi è il pericolo che i lavori non siano eseguiti
correttamente; ciò può avere come conseguenza lesioni e danneggiamenti.

• 

→ Per questo motivo, dopo la stampa è assolutamente necessario confrontare le stampe con la
rappresentazione sullo schermo. In caso di errore si prega di correggere le stampe, così da
garantire la riproduzione esatta della rappresentazione sullo schermo.

ADVERTENCIA

Al imprimir se corre el riesgo de perder la correcta asignación de las figuras al texto.

Por motivos técnicos, por el momento no se puede descartar que, aun siendo
correcta la imagen que aparezca en la pantalla, al imprimir se pierda la
correlación entre el texto y la figura correspondiente.

• 

Si este error pasara desapercibido, existe el riesgo de que los trabajos no se
ejecuten de forma correcta y, por tanto, se produzcan daños personales y
materiales.

• 

→ Por ello le rogamos que tras el proceso de impresión compare siempre las copias impresas con
la imagen de la pantalla. En caso de error, corrija las copias impresas de forma que se
correspondan con el contenido de la imagen de la pantalla.

Diagnostic system: reading out fault memory and activating systems

Front axle

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45 01 01 PSM/ABS check using the PIWIS Tester - as
of MY 2005

- 

Tools

Designation

Type

Number

Explanation

PIWIS Tester

special tool

P 9718

Test overview

Note

PSM is installed as standard.

• 

PSM comprises the functions ABS (anti-lock braking system), ABD (automatic brake differential),
ASR (anti-slip regulation), EDTC (engine drag torque control), EBD (electronic brake-force
distribution) and vehicle dynamic control.

• 

The ABS/PSM test includes:

Reading out fault memory.

• 

Static test.

• 

Swap testing hydraulics in the Checks/Tests menu. The swap test is menu-driven. Once you start the
test, follow the instructions on the PIWIS Tester.

• 

Checking function and correct allocation of speed sensor in the Actual values menu. Turn all four
wheels individually during the test. The speed assigned to the wheel in question must be displayed
when you turn the wheel. The non-tested wheel must be held (by a second person) when the test is
performed on the driven axle.

• 

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Hydraulic unit

Procedure:
If work has been done on the hydraulic unit -D- , the speed sensors and the wire harness or if the hydraulic
unit -D- is replaced, an ABS/PSM test (system check) must be performed using the PIWIS Tester! This is the
case, for example, after accident repairs! This prevents any confusion of electrical or hydraulic lines and
ensures faultless operation of the system!
If certain brake lines are replaced, e.g. at the intermediate piece in the front left wheel housing -E- , a swap
test must also be performed (in the Checks/Tests menu)! Unintentional bending of the brake lines could lead
to incorrect hydraulic allocation despite the markings (FL = front left, FR = front right, RL = rear left, RR =
rear right)!
If a fault is displayed during operation (when no assembly work was carried out beforehand), diagnosis and
fault finding are also carried out using the PIWIS Tester! To do this, select the PSM system and read out the
fault memory there! The fault can then be located using the appropriate menus (Drive links, Actual values,
Checks/Tests)!

PSM check using the PIWIS Tester

1. PIWIS Tester P 9718 must be connected to the vehicle, then start it. Switch on ignition and press

>> to continue.

Diagnostic socket

The PIWIS Tester 9718 is connected to the vehicle via a diagnostic socket. The diagnosis socket is
located inside the vehicle in the vicinity of the driver's A-pillar below the instrument panel.

2. Select the vehicle type and call up the PSM system.

3. Carry out ABS/PSM test (see Test overview).

Diagnostic system: reading out fault memory and activating systems

Test overview

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