3-4. Sensors (Only sensors that were changed.) A. G Sensor (Cylinder Recognition Sensor) The G sensor is an MRE (electromagnetic resistance element) type. When the hole on the flywheel passes the sensor, the electromagnetic resistance flowing through the sensor changes. This variation in current is amplified by the internal IC circuit, and a signal is output to the engine ECU. A cylinder recognition pulsar is installed to the supply pump camshaft, and a cylinder recognition signal is output. 7 pulses are output for every revolution of the supply pump, or for every 2 revolutions of the engine. Cylinder recognition is inferred by combining the NE signal and the G signal.
The irregular 7th pulse is used to recognize the first cylinder. a. External View and Terminal Positions The MRE type differs to the conventional type in that a pulse of constant amplification is generated so that the OUT ter- minal does not affect engine speed changes when constant amplitude (5V) is applied to the VCC. OUT G (sub-NE) Sensor VCC GND VCC GND OUT Q000738E b. Output Signal The OUT terminal outputs the following in synchronization with the pulsar missing teeth (pump camshaft). For each one rotation of the pump camshaft, there are 6 pulses at 60 ° intervals, and 1 extra pulse used for recognition of the number one cylinder. approx. 5V 0V approx.
1V 15° 60° 60° 60° 60° 60° Q000739E -10-