Tennant M17 Series, Service Information Manual

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M17 Service Information 90 17358 ( 08 - 20 16) 4-51
TROUBLESHOOTING
Side Sweep Brush(es) Failed to Retract/Raise
STEP ACTION VALUE(S) YES NO
1 • Key On
• Enable side brush retract/up
• Is there a pertinent fault message displayed?
See
“ Fault Section"
Go to Step #2
2 • Key O ff
• See “Self-Test Mode”
• Does the Self-Test display output circuits J4-1, 2 or
J4-11, 12 as open or shorted?
Go to Step #3 Correct Faulty
Input Condi-
tion
3 • Key O ff
• See “Input Display Mode”
• Does I6: Side Sweep On/Off input c orrespond
with side brush rocker switch position?
Go to Step #4 Correct Faulty
Input Condi-
tion
4
• Key O ff
• See TESTING SIDE SWEEP BRUSH LIFT ACTUATOR in
the SERVICE section of this manual
• Does the side brush lift actuator pass the testing?
See TESTING
SIDE SWEEP
BRUSH LIFT
ACTUATOR
Go to Step #5 Replace Side
Brush Lift
Actuator
5 • Key On
• Side brush switch O ff
• Test voltage applied to side brush lift subsystem as
shown on the electrical schematic
• Are the electrical circuits operating as shown on the
electrical schematic?
Go Back to
Step #1
Identify Volt-
age Drop
Location and
Repair or Re-
place Neces-
sary Compo-
nents
Terms:
J4-1, 2 = Side Sweep Module Connector #6, Pin #17 or 18
J4-11, 12 = Side Scrub Module Connector #6, Pin #14 or 16