Service manual

11. Identifying the Cause of Trio Failures
1. Check for loose or burnt connections on the controller, batteries, cables and the circuit breaker.
Make the sure the circuit breaker is not damaged (burnt or cracked).
2. Test the chassis drive motor harness for broken wires (riders only). Disconnect the plug labeled
Traction on the Trio controller. Connect a digital multi-meter to the plug on the two large wires.
Set the meter for Ohms (resistance). The resistance should be .3 to .4 ohms. Turn the steering
wheel in both directions until it stops several imes Monitor the meter w ile turnin he
wheel
in
both
directions
until
it
stops
several
times
.
Monitor
the
meter
while
turning
.
The
resistance should not change or vary while turning. Any variation even .1 ohm would be indicate
a broken wire, which could cause spikes and surges, that could damage the Trio controller.
3. Measure the total battery voltage at the batteries and at the battery connections on the controller.
The
should be exactl the same. A 1/10 of a volt or more difference would indicate a roblem in
yy p
the connections.
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