Tennant M17 Series, Service Information Manual

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M17 Service Information 90 17358 ( 08 - 20 16) 4-43
TROUBLESHOOTING
Rear Squeegee Failed to Raise/Lower
STEP ACTION VALUE(S) YES NO
1 • Key On
• Enable rear squeegee down
• Is there a pertinent fault message displayed?
See
“ Fault Section"
Go to Step #2
2 • Key O ff
• See “Manual Mode” section of this manual
• Activate the rear squeegee in manual mode
• Does the rear squeegee raise/lower?
Go to Step #5 Go to Step #3
3
• Key O ff
• See “Self-Test Mode”
• Does the Self-Test display output circuits J5-3 and
J5-2 as open or shorted?
Correct Open
or Short Cir-
cuit Condition
Go to Step #4
4
• Key O ff
• See TESTING REAR SQUEEGEE LIFT ACTUATOR in the
SERVICE section of this manual
• Does the rear squeegee lift actuator pass the testing?
See TESTING
REAR SQUEE-
GEE LIFT
ACTUATOR in
the SERVICE
section of this
manual.
Go to Step #5 Replace Rear
Squeegee Lift
Actuator
5 • Key O ff
• Reconnect rear squeegee lift actuator to main wire
harness
• Test voltage applied to rear squeegee 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
Replace Neces-
sary Compo-
nents
Terms:
J5-3 = Water PU Module Connector #5, Pin #3
J5-2 = Water PU Module Connector #5, Pin #2