XJ-12 (X300) V12-6.0L (1995)
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Crankshaft Position Sensor: Description and Operation
Fig. 1 Crankshaft Position Sensor
Engine position is measured by the crankshaft position sensor (or TDC sensor) mounted below the rear of the crankshaft front pulley. This sensor
provides one pulse every 360° of crankshaft rotation, indicating when the engine is at cylinder 1a TDC position. The camshaft position sensor
(CMP) provides one signal every 720° of crankshaft rotation indicating No. 1 A cylinder at TDC prior to the firing stroke. These signals are used
by the ECM to control fuel injection and ignition duration and synchronization.