Symptom | Probable Cause | Corrective Action | Recommended Tools |
NO RESISTANCE 750U, 750R
Console Set
Defective Cables
Power Resistance
Brake Harness/
Lower Board
•Remove console bolts to access
•Enter DA (resistance) test mode. (Page 2).
•Press + key to force .7 VDC out of panel.
•Set meter for DC Volts. Measure between #2 pin and #4 pin at 7- pin connector.
•Is .7 VDC present? No- replace console set. If present, continue on.
•Remove right mast cover and handlebar.
•Measure between the #2and #4 wires at the 7
•Is .7 VDC present? No- replace cable for console. If present, continue on.
•DO NOT PEDAL.
•Set meter for resistance. Disconnect 3- pin connector at the lower control board. Measure resistance between #1 pin and #3 pin.
•Resistance should be 10 ohms, +/- 1 ohm.
•If less than 10 Ohms- replace power resistance. If resistance checks OK, continue on.
•DO NOT PEDAL.
•Remove main body cover, set meter for continuity.
•Disconnect brake cable from brake and lower board.
•Check continuity of all wires in cable.
•Check for cross continuity- this would indicate multiple shorts in the cable.
•No continuity? Replace Brake cable.
•Yes continuity? Replace lower board.
Note:
You must pedal at least 30 RPM when performing any voltage test. You may require the assistance of another person when performing voltage checks.
Page 12
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