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1992 Ls400 Trac Light


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Well, not exactly.

The Trac ecu watches the ABS sensors at the front and compares the front rotation rate with each of the rear wheels, individually. If either rear wheel should turn faster, for even a short duration, say a 4" wide plastic crosswalk strip that's wet, the Trac indicator will illuminate briefly.

Therefore my use of the term "slip", no spin.

Obviously it would also do it for a true "spin".

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