Denso CRS - Page 21

Operation Section
1
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16
CYLINDER RECOGNITION SENSOR {TDC (G) SENSOR}
• The cylinder recognition sensor {TDC (G) sensor} uses the alternating current voltage generated by the change in the
lines of magnetic force passing through the coil to send the output voltage to the ECU. This is the same for the engine
speed sensor installed on the engine side. A disc-shaped gear, which is provided in the center of the supply pump
camshaft, has cutouts that are placed at 120? intervals, plus an extra cutout. Therefore, this gear outputs seven puls-
es for every two revolutions of the engine (for a six-cylinder engine). Through the combination of engine-side engine
speed pulses and TDC pulses, the pulse after the extra cutout pulse is recognized as the No. 1 cylinder.
Q000774E
024 68101214 024 6810 12 14 0 2 4 6 8 10
12 0 2 4 68101214 02 4 68101214 024 68 024 681012
Cylinder Recognition Sensor
(TDC (G) Sensor)
No.6 Cylinder TDC (G) Standard Pulse
No.1 Cylinder Recognition TDC (G) Pulse
No.1 Cylinder TDC (G) Pulse
No.1 Cylinder Engine Speed Standard Pulse
No.6 Cylinder Engine Speed Standard Pulse
· TDC (G) Pulse
· Engine Speed Pulse
· For a 6-Cylinder Engine (Reference)