Psd - Fault Display/Troubleshooting Procedure - Porsche 928 Workshop Manual

928
Differential, transaxle system
39
PSD - Fault display / Troubleshooting procedure
Fault display
If the ABWPSD control unit detects a fault in
the electronically controlled limited-slip dif-
ferential (PSD), the PSD is swkched off for
safety reasons and the following fautt display
appears in the display fields of the information
system:
Troubleshooting procedure
Read out the DTC memory with system tester
9288 and remedy the fautt if necessary.
This is described on Page 039-223 ff.
If only the PSD is switched off (ABS OK) and
no
fault is stored in the ABS/PSD DTC me-
moly, the fauit lies in the lock hydraulics (ener-
PSD OFF
gy production).
The PSD is always switched off when the
ABS (antilock braking system) is switched off.
Note
The PSD indicator lamp
(green lamp) in the
instrument cluster lights up while the lock is
active.
a
PSD diagnosis/Troubleshooting
D39 - 202~
Printed in Gemmny - XXXV, 1996