Tennant M17 Series, Service Information Manual

Page: 169 / 236

M17 Service Information 90 17358 ( 08 - 20 16) 4- 7 3
TROUBLESHOOTING
Hopper Lift Pump, UP
STEP ACTION VALUE(S) YES NO
1
• Key On
• Enable hopper switch to raise.
• Is there a pertinent fault message displayed?
See
“ Fault Section"
Go to Step #2
2
• Key Off
•
Activate the Hopper Switch
•
Does the hopper raise?
Go to Step #3
3
• Key Off
• See “Self-Test Mode”
• Does the Self-Test display output circuits J5-1
J5-3 as open or shorted?
Correct Open
or Short Cir-
cuit Condition
Go to Step #4
4 • Key O ff
• See “Input Display Mode”
• Does I12: Hopper On/Off input correspond with
hopper rocker switch position?
Go to Step #5 Correct Faulty
Input Condi-
tion
Terms:
J5-1,3 = Main Sweep/Lift Module
See “Manual Mode” section of this manual
•
Go to Step # 6
5
•
•
•
Key O ff
See TESTING HOPPER LIFT PUMP in the SERVICE
section of this manual
Does the hopper lift pump pass the testing?
See TESTING
HOPPER LIFT
PUMP
Go to Step #6 Replace pump
6 • Key O ff
• Reconnect hopper lift pump to main wire harness
• Test voltage applied to pump system 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