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Test for Clock Spring Continuity and Resistance:
Set your digital multimeter to test for continuity or measure resistance (Ω).Probe the corresponding pins on the front and back connectors for the horn, cruise control, and airbag (note that on some Porsche models, the two airbag wires may show a dead short at the connector for static prevention, so check your specific pinout). Slowly rotate the clock spring from lock to lock. If the multimeter reads an open circuit (no tone or infinite resistance) or the resistance jumps erratically while turning, the internal ribbon cable is torn and the clock spring needs to be replaced.
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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