XJ-6 L6-3.6L (1989)
Crankshaft Position Sensor: Description and Operation
Crank Sensor & Toothed Gear
PURPOSE
The sensor provides the ECU with both engine speed and crankshaft position information.
OPERATION
When engine is running, timing ring segments induce a signal in the reluctance coil. Signal frequency is interpreted by the ECU as engine speed.
Induced signal interruptions caused by the 3 missing segments provide the ECU with crankshaft position references.
CONSTRUCTION
The sensor consists of a variable reluctance pick-up coil and a toothed gear (timing ring) turned by the crankshaft. There are 57 rectangular segments
(teeth) around the gear circumference and 3 missing segments (a total of 60 symmetrically spaced divisions).
LOCATION
Front of engine at crank pulley.
