Porsche 1989 944 S2, Workshop Manual

Page: 32 / 167

03
Maintenance, Self-diagnosis 944
Error code 1112
This error code indicates an error in the area
of the idle contact.
Possible error:
Ground fault
Switch stuck
Testing the idle contact
Extract the plug from the DME control unit.
32
Connect a ohmmeter between terminal 52
and terminal 24 on the DME plug.
Display:
Throttle valve closed: R < 10
Throttle valve open: R =
Switchover must already occur if the throttle
valve is only slightly open (approx. 1°).
If the values ara not reached during this
testing
step, measurement must be repeated
directly
on the throttle valve switch.
03 - 20 Troubleshooting
Printed in Germany - XVI, 1987