Best done by disconnecting the battery first.....
1) Unplug the sensor and plug IV on the DME. Check for a ground (short) between the disconnected sensor wire and ground. Should get infinity (no path to ground).
2) Check for resistance between the sensor's wire connector and pin 21 on plug IV on the DME.
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1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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