Tennant M17 Series, Service Information Manual

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M17 Service Information 90 17358 ( 08 - 20 16) 4-59
TROUBLESHOOTING
Severe Environment - Spot Cleaning Failed to Turn On
STEP ACTION VALUE(S) YES NO
1 • Key On
• Enable severe environment - spot clean
• 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 detergent pump in manual mode
• Does the pump dispense detergent?
Go to Step #6 Go to Step #3
3
• Key O ff
• See “Self-Test Mode”
• Does the Self-Test display output circuits J4-14, J4-12,
or J4-11 as open or shorted?
Correct Open
or Short Cir-
cuit Condition
Go to Step #4
4
• Key Off
• Firmly press circuit breaker #6 to reset
• Is circuit breaker #6 tripped?
Reset and Test
SE-Spot Clean
Operation
Go to Step #5
5
• Key O ff
• Check to be sure there is detergent in the concen-
trate tank
• Disconnect detergent pump from main wire harness
• Apply battery voltage to detergent pump using fuse-
protected jumper leads
• Does the pump dispense detergent?
Go to Step #6 Repair or
Replace deter-
gent pump
6 • Key O ff
• Reconnect detergent pump to main wire harness
• Key On
• Enable severe environment subsystem
• Test voltage applied to the severe environment sub-
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
Terms:
J4-14 = Scrub Module Connector #4, Pin #14
J4-12 = Scrub Module Connector #4, Pin #12
J4-11 = Scrub Module Connector #4, Pin #11