221
Drive motors (Backward)
Left motor PWM>95%
Left wheel friction is too high
222 Drive motors (Backward)
Right & Left motors
PWM>95%
Right & Left wheels friction is too high
230 Drive motors (Backward)
Right wheel PWM>Left
wheel PWM
Right wheel friction>Left wheel friction, or
Right motor is slower than Left motor
231 Drive motors (Backward)
Left wheel PWM>Right
wheel PWM
Left wheel friction>Right wheel friction, or
Left motor is slower than Right motor
240 Drive motors (Backward) Right PWM<78 or >82 Test again
241 Drive motors (Backward) Left PWM<78 or >82 Test again
242 Drive motors (Backward)
Right & Left PWM<78
or >82
Test again
243 Drive motors (Backward)
Measured PWM
difference >2
Test again
5.6.2 Mowing Motors Problems
Fault
#
Diagnosed item Meaning Possible cause
301 Mowing motors Right Motor current > 100mA Right Motor power unit is faulty
302 Mowing motors Mid Motor current > 100mA Mid Motor power unit is faulty
303 Mowing motors
Right + Mid Motor current >
100mA
Right +Mid Motor power units are faulty
304 Mowing motors Left Motor current > 100mA Left Motor power units is faulty
305 Mowing motors
Right + Left Motor current >
100mA
Right +Left Motor power units are faulty
306 Mowing motors
Mid +Left Motor current >
100mA
Mid +Left Motor power units are faulty
307 Mowing motors
Right +Mid +Left Motor
current > 100mA
Right +Mid +Left Motor power units are
faulty
331 Mowing motors Right Motor current < 100mA Right Motor is disconnected
332 Mowing motors Mid Motor current < 100mA Mid Motor is disconnected
333 Mowing motors
Right +Mid Motor current <
100mA
Right +Mid Motor are disconnected
334 Mowing motors Left Motor current < 100mA Left Motor is disconnected
335 Mowing motors
Right +Left Motor current <
100mA
Right +Left Motors are disconnected
336 Mowing motors
Mid +Left Motor current <
100mA
Mid +Left Motors are disconnected
337 Mowing motors
Right +Mid +Left Motor
current < 100mA
Right +Mid +Left Motors are disconnected
341 Mowing motors Right Motor current > 2A Right Motor is overloaded
342 Mowing motors Mid Motor current > 2A Mid Motor is overloaded
343 Mowing motors
Right +Mid Motor current >
2A
Right +Mid Motors are overloaded
344 Mowing motors Left Motor current > 2A Left Motor is overloaded
345 Mowing motors
Right +Left Motor current >
2A
Right +Left Motors are overloaded
346 Mowing motors Mid +Left Motor current > 2A Mid +Left Motors are overloaded
347 Mowing motors
Right +Mid +Left Motor
current > 2A
Right +Mid +Left Motors are overloaded
351 Mowing motors Right Motor current > 100mA Right Motor stopping is faulty
352 Mowing motors Mid Motor current > 100mA Mid Motor stopping is faulty
353 Mowing motors
Right +Mid Motor current >
100mA
Right +Mid Motors stopping is faulty
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