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Electronics / Sensors
Electrical circuit diagram - speed sensor
A
General
23.2.2001
9700
000010
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a
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Capitel
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Electrical circuit diagram - speed sensor
PM-Picturemodule
PM-Picturemodule
Text-module
Speed sensor pin assignment
1
= Earth
2
= Speed signal
3
= + supply 12 to 14 VDC
Text-module
Measure resistance at pin 2 and pin 1
Hall-effect sensor disconnected (no + supply)
Resistance R = 18 kohms
Text-module
Measure signal voltage at pin 2 and pin 1
ECU A002 supplies basic signal voltage of approx. 7.3 VDC to pin 2.
Ratchet wheel setting A
Signal voltage = approx. 5.4 VDC , resistance 18 kohms
Ratchet wheel setting B
Signal voltage = approx. 1.1 VDC , total resistance (parallel connection) from 18 kohms and 1 kohm
Text-module
M supply at pin 3 and pin 1
Voltage = 12 to 14 VDC (depending on on-board power supply)
PMTAB_Picture
PMTAB_Picture