Tennant M17 Series, Service Information Manual

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M17 Service Information 90 17358 ( 08 - 20 16) 4-31
TROUBLESHOOTING
Back-Up Alarm/Light Failed to Turn ON
STEP ACTION VALUE(S) YES NO
1 • Key On
• Enable back-up alarm/lights
• Is there a pertinent fault messag e displayed?
See
“ Fault Section "
Go to Step #2
2 • Key On
• Enable back-up alarm/lights
• See “Curtis 1232SE Controller Diagnostics”
• Is there a pertinent Curtis 1232SE fault
displayed?
Correct Fault
Condition
Go to Step #3
3
• Key O ff
• See “Propel Diagnostic Mode” section of this manual
• Check the “P4:Direction Fwd/Rev” input from the
directional switch
• Check the “P2:Throttle” (0-5 vdc) input from the direc-
tional pedal
• Are the P2 and P4 inputs operating properly?
Go to Step # 4 Correct Faulty
Input Condi-
tion
4
• Key O ff
• Remove M2 relay from connector (see component
locator)
• Connect an Ohmmeter between relay terminals 30
and 87 (should test open or “O.L.”)
• Apply battery voltage to relay terminals 86 (+) and
85 (-) using fuse-protected jumper leads
• Does the relay “click” and do the N.O. (normally open)
terminals 30 and 87 close?
Go to Step #5 Replace Relay
5
• Key O ff
• Disconnect back-up alarm/light from main harness
• Apply battery voltage to back-up alarm/light using
fuse-protected jumper leads
• Does the back-up alarm/light turn On?
Go to Step #6 Replace Back-
Up Alarm/
Light
6
• Key On
• Reconnect back-up alarm/light to main harness
• Enable back-up alarm/light
• Backprobe using a voltmeter between 15/GRN and
17/PUR at the Curtis 1232SE controller connection
• Is there battery voltage applied?
Repair or
Replace Wire
Harness
Replace Curtis
1232SE Control-
ler
Terms:
Backprobe = To insert voltmeter probe(s) into the back of a connector to contact a terminal(s) while the circuit
operates or should be operating.
VDC = DC Voltage