Porsche 928 Workshop Manual page 1258

Differential, Tansaxle System
The 55-pin
ABS 2 LED adapter lead (see item
I), a multimeter, a shop trolley jack and a
measuring tape are required for this test. The
55-pin
adapter lead required to run an ABS
test on the Carrera 4 (964) and the 928 with
PSD (instead of the
%-pin
adapter lead) has
3 outputs incorporated for testing the longitudi-
nal and lateral acceleration sensors.
The longitudinal acceleration sensor is only
fitted to the Carrera 4 (964).
Manufacturer of the adapter lead:
Robert Bosch GmbH
Dept.: KHiVKD 2
Postfach 41 09 50
D-76225 Karlsruhe
Phone: 0721/942-O
Fax: 0721/9422187
Supplier of the adapter lead:
Authorized dealer
Part No. KDAS 000317
1. With the ignition switched off, take off the
ABSIPSD control unit connector and con-
nect it to the 55.pin ABS 2 LED adapter lead.
Note
The following tests can be carried out with or
without the ABS 2 LED tester being connected.
The 3 outputs are identified by special symbols
A = Signal of longitudinal acceleration sensor
B = Signal of lateral acceleration sensor
C = Ground contact for both sensors
r
2. With the vehicle in normal position, check
and record the voltage reading at the
lateral
acceleration sensor
(with the ignition
switched on).
Specification: 2.7 + 0.14 volts.
Normal position means: Vehicle must be on
a level surface. If the vehicle was off the
ground before the test, slacken the suspen-
sion if required (move vehicle a few yards
and jounce from and rear ends of vehicle
several times).
If the reading deviates from the specifica-
tion, continue with the assessment table
at the end.
D39 - 220
Lateral acceleration sensor
Printed in Germany - WXIV. 1994