968 Cabriolet L4-2990cc 3.0L DOHC (1993)
Non-Detectable Faults
Faults that cannot be detected by self-diagnosis
The Tiptronic control unit cannot detect and store all potential faults. If a fault is found and if no fault has been stored, the tester may be used to run a
system check to indicate any faults that may be present.
Some of these faults are stated below:
^ No diagnosis possible, test point 0
No diagnosis is possible if the diagnostic leads are faulty.
^ Terminal 30, Test point 1
If terminal 30 is inoperative, all faults that may have been stored are erased after the ignition is switched off.
^ Terminal 15, Test point 2
If terminal 15 is inoperative, the system enters the (mechanical-hydraulic) emergency mode. The fault lamp does not come on.
^ DME rpm signal is missing. Test point 5: Actual values, connector to DME.
^ Transmission oil level o.k.?
