Porsche 928 Workshop Manual page 67

03
Maintenance, Self-diagnosis 928
Error code 1112 Display:
This error code indicates a fault in the area of
the idle contact.
Possible faults:
Shod-circuit to ground
Switch stuck
Throttle valve closad: Flc 10n
Throttle valve open: R=COO
Switchover must occur even ff the throttle
valve is only slightly open (approx. 1").
Testing the idle contact
Ignition off
In the event of an error, check with reference
to the circuit diagram.
Disconnect the plugs from the EZK control unit
and from the LH contrd unit.
Connect an ohmmeter between terminal 2 and
terminal 5 on the LH control unit plug.
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03 - 20
Trouble-shooting
Printed in Germany -XX, 1988
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