Coding Of Control Unit - 944 S - Porsche 944 Workshop Manual

944 S/944 S2

Coding of Control Unit - 944 S

Pertinent curve families are integrated in the DME control unit, in order to be able to comply
with the legislation of different countries. They can be read direct in the "actual value" menu
with a 9288 System Tester.
One each 2-pin and 3-pin plug, which are bridged differently depending on the country version,
lead out of the DME wire harness to call these curve families.
Country
USA Federal States
FAG M 298
Oxygen sensor
USA Califomia
Japan
Oxygen sensor
ECE
Sweden
Australia
Oxygen sensor
DME - Diagnosing/Troubleshooting
Printed In Germany - XXI, 1989
Fuel System - Electronic Control
Curve Family Switch
2 Pins
-
-
-
-
Bridge against ground
944.612.515.00
24/28
Version Switch
3 Pins
-
Bridge against
battery voltage
928.607.421.00
Bridge against grd.
928.607.422.00
Resistance
6.8 k against grd.
944.612.522.00
-
D 24/28 - 31