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Symptom Probable Cause Corrective Action Recommended Tools
NO SPEED
READING
600EA
Console Assembly
RPM Sensor
Defective ECB
Control Board
• Remove monitor bolts. Move the swing
arms until the magnet is in front of the
sensor.
• Set meter for DC volts. Check voltage
between pin 3 and pin 1 at console
assembly with cable connected.
• Move swing arms. When magnet is
over the pickup the voltage should be 0
VDC. When the magnet is not over the
pickup, the voltage should be 5 VDC.
• Does the voltage alternate between 0
VDC and 5 VDC? If yes – replace
console assembly.
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• Turn power off, remove rear cover
• Disconnect the sensor connector. Set
meter for resistance.
• Check resistance at the 2 pins of the
connector. Slowly move the swing arms
to rotate the wheel.
• Does the meter show continuity when
the magnet is over the pickup? If no –
replace the sensor.
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• Perform a continuity and contact check
on the console wire.
• Replace defective wire.
Multi-meter
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