28
- FORM NO. 56043126 - CR 1100, CR 1200
WHEEL DRIVE SYSTEM
TROUBLESHOOTING GUIDE
Possible Symptom
1
Forward/ reverse auto accessory functions do not work, examples; main broom, side brooms, scrub motors, vacuum motor and dust control
motor.
Note: Do all testing with key switch on and drive pedal activated (forward/reverse)
Machine drive auto
accessory functions
do not work
With the seat switch closed, drive wheel
jacked properly, place the pedal in forward or
reverse position. At the A3 Curtis Speed
control back probe pin 20 GRA wire check for
36V to battery positive
Replace the A3
Curtis Controller
Is the MIL light
(E)
flashing at the A2 display
board?
See Curtis
troubleshooting section
Check for an open circuit from the A3 Curtis
Speed controller pin 20 GRA wire to A1 main
board J2-26 GRA wire.
Repair or replace
GRA wire
Replace the A1
Main Board
Machine auto reverse
function does not work
With the seat switch closed, drive wheel
jacked properly, place the pedal in reverse
position. At the A3 Curtis Speed control back
probe pin 19 RED/WHT wire check for 36V
to battery positive
Replace the A3
Curtis Controller
Is the MIL light
(E)
flashing at the A2 display
board?
See Curtis
troubleshooting section
Check for an open circuit from the A3 Curtis
Speed controller pin 19 RED/WHT wire to A1
main board J2-25 RED/WHT wire.
Repair or replace
RED/WHT wire
Replace the A1
Main Board
no
no
no
no
no
no
yes
yes
yes
yes
yes
yes
Содержание Cr 1100
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