600SEL (140.057) V12-6.0L (120.980) (1993)
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Crankshaft Position Sensor: Description and Operation
Top Dead Center Sensor
Checking/Setting TDC Sensor
The engine is equipped with two top dead center sensors (L1/1 and L1/2) that recognize TDC for #1 or #7 cylinder. The TDC sensor signal can be
accessed through pin 7,8 and 9 at the left or right 9-pole diagnostic connector (X11/2 or X11/3). The sensors are not connected to any control module,
they are provided for test equipment hook-up only.
