Tennant M17 Series, Service Information Manual

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M17 Service Information 90 17358 ( 08 - 20 16) 4- 81
TROUBLESHOOTING
STEP ACTION VALUE(S) YES NO
1 • Key On
• Enable sweep brush
• Is there a pertinent fault message displayed?
See
“ Fault Section"
Go to Step #2
2 • Key Off
• See “Manual Mode” section of this manual
• Activate the main sweep brush in manual
mode
• Do the sweep brushes turn On?
Go to Step # 6 Go to Step #3
3
• Key Off
• See “Self-Test Mode”
• Does the Self-Test display output circuits J7-1, 2 or 3
as open or shorted?
Correct Open
or Short Cir-
cuit Condition
Go to Step #4
4 • Key O ff
• Test voltage applied to brush motors as
shown on the electrical schematic
• Are the electrical circuits operating as shown on the
electrical schematic?
Terms:
J7-1, 2 = Main Sweep Module
J7-1, 3 = Mian Sweep Module
Middle Sweep Motors
Go to Step #5 Correct Faulty
Input Condi-
tion
5 • Key O ff
• See TESTING MIDDLE SWEEP MOTOR S in the SER-
VICE section of this manual
• Does the motor (s) pass the testing?
See TESTING
MIDDLE
SWEEP
MOTORS
Go to Step #6 Replace Middle
Sweep Motor
6 • Key O ff
• Reconnect side brush motor to main wire harness
• Test voltage applied to side brush 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