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DTC 522752 Start Failure Due to Cam Signal Error
Conditions for setting the DTC
This fault will set if the ECU does not detect a cam pulse within 16 engine revolutions whenever the engine
is cranking or running.
Circuit Description
The camshaft position sensor (CMP) is a Hall Effect sensor used to synchronize the fuel and ignition sys-
tems. The sensor produces a short 5 volt square wave pulse every two engine revolutions. The signal
wire from the CAM sensor is held up at 5 volts by a pull-up resistor in the ECU. The CAM sensor pulls this
5 volt level to ground until a small hole in the end of the camshaft passes the sensor at which time the sig-
nal goes high to 5 volts for a brief period.
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