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post #5 of (permalink) Old 11th January 2006
A former user
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Top Dead Centre
The position of the crank when the piston is in its farthest position from the crankshaft, in its nearest position to the cylinder head. Abbreviated tdc .

The TDC sensor tells the ECU (engine control unit) when ( normally #1 cylinder ) is at top dead center. The Engine ECU decides the ignition timing according to the TDC Sensor signal.

So if the TDC sensor is not sending a signal you get no ignition + this is probably why you find yourself burning out starter motors.
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