If safety inter lock s witches ar e disconnected
or dama ged the machine could operate
unexpectedl y causing per sonal injur y .
• Do not tamper with the inter lock
s witches.
• Check the operation of the inter lock
s witches dail y and r eplace an y dama ged
s witches bef or e operating the machine.
• R eplace s witches ev er y tw o y ear s
r egardless of whether they ar e operating
pr oper l y or not.
Verifying the Interlock Switch
Function
1. P ark the mac hine on a lev el surface , lo w er the
cutting units , stop the engine , and eng ag e the
parking brak e .
2. Open control panel co v er .
3. Locate the wire har ness and connectors near
the controller ( Figure 38 ).
Figure 38
1. Wire harness and connectors
4. Carefully unplug loop bac k connector from
har ness connector .
5. Connect the Diagnostic A CE displa y connector
to the har ness connector ( Figure 39 ).
Note: Mak e sure cor rect o v erla y decal is
positioned on Diagnostic A CE displa y .
Figure 39
1. Diagnostic ACE
6. T ur n the k ey switc h to the On position, but do
not star t the mac hine .
Note: T he red text on the o v erla y decal refers
to input switc hes and the g reen text refers to
outputs .
7. T he “inputs displa yed” LED , on the lo w er
right column of the Diagnostic A CE, should
be illuminated. If the “outputs displa yed”
LED is illuminated, press the tog gle button,
on Diagnostic A CE, to c hang e LED to “inputs
displa yed”.
T he Diagnostic A CE will illuminate the LED
associated with eac h of the inputs when that
input switc h is closed.
8. Indi vidually , c hang e eac h of the switc hes from
open to closed (i.e ., sit on seat, eng ag e traction
pedal, etc .), and note that the appropriate LED
on Diagnostic A CE will blink on and off when
cor responding switc h is closed. R e peat this for
all switc hes that y ou can c hang e b y hand.
9. If a switc h is closed and the appropriate
LED does not tur n on, c hec k all wiring and
connections to the switc h and/or c hec k the
switc hes with an ohm meter . R e place any
defecti v e switc hes and re pair any defecti v e
wiring .
35
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