Crankshaft Position Sensor - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

DI02-36

Crankshaft Position Sensor

<Location of crankshaft position sensor>
The crankshaft position sensor is located near to flywheel on the rear of cylinder block. It generates AC voltage between
increment type driven plate that fixed on flywheel inside. The sensor consists of soft iron core that winded copper wire
on permanent magnet and generates sign wave AC voltage when magnetism on the sensor wheel passes the sensor.
When the crankshaft rotates, '+' signal will be generated from near the front edge and '-' signal will be generated from
near the rear edge among teeth on the driven plate near to crankshaft position. The AC voltage increases as the engine
speed increases, however, no signal occurs from the 2-missing-tooth on the increment type driven plate. By using these
teeth, ECU recognizes TDC of No. 1 and 5 cylinders.
ECU converts the alternative signals into digital signals to recognize crankshaft position, piston position and engine
speed. The piston position that coupled with crankshaft is main factor in calculating injection timing. By analyzing the
reference position and camshaft position sensor, can recognize No. 1 cylinder and calculate the crankshaft speed.
<Drive plate>
A. Distance between '+' max. voltage and '-' max.
voltage
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Standard
position
Ring gear
<Structure of crankshaft position sensor>
a. Front edge
b. Rear edge
c. 2-missing-tooth
Permanent
magnet
Iron
coil
Y220_02098
Y220_02099
ENGINE HOUSING
DI ENG SM - 2004.4