Fault Possible
cause
Steps Troubleshooting Action
Defective
parking
brake mi-
croswitch.
2 Do a check of the parking brake microswitch. Replace the
micro-
switch.
The product
does not stop
when the oper-
ator lifts from
the seat with-
out releasing
the parking
brake.
Defective
parking
brake mi-
croswitch.
1 Do a check of the parking brake microswitch. Replace the
micro-
switch.
Defective
seat mi-
croswitch.
2 Measure the voltage on the gray wire from J7 (pin 1) when the
start key is turned to "Start". The voltage in the wire must then be
12V.
Do a check
of safety
switch and
connectors,
replace if
necessary.
Wiring
fault.
3 Do a check of the black wire and connectors between the engine
and J1 (pin 6) on the circuit board.
Repair the
wire or re-
place the
wiring.
4 Do a check of the black wire and connectors between the seat
switch and J3 (pin 1) on the circuit board.
5 Do a check of the black, green and blue wires and connectors to
the parking brake microswitch.
6 Do a check of the blue wire and connectors from J3 (pin 3) on the
circuit board to the connector before the parking brake.
PTO activation
does not work
Battery
voltage
1 Do a check of the 5A “Fuse P.T.O.” Replace
fuse
2 Measure the voltage on J6 (pin 3) with the key in “ON” position.
The voltage must be equal to the battery voltage.
Go to steps
3-6.
3 Measure the voltage in the connector to the electrical coupling.
The voltage must be equal to the battery voltage when PTO is en-
gaged.
Go to wiring
fault
Wiring
fault
4 Do a check of the gray wire and connectors from J1 (pin 9) on the
circuit board to the PTO clutch.
Repair the
wire or re-
place the
wiring.
5 Do a check of the blue wire and connectors from the PTO clutch to
the battery.
6 Do a check of the yellow wire and connectors from J6 (pin 3) on
the circuit board to the PTO switch.
7 Do a check of the yellow wire and connectors from J6 (pin 6) on
the circuit board to the PTO switch.
Product will not
stop
Wiring
fault
1 Do a check of the black wire and connectors between J1 (pin 6)
and the engine.
Repair the
wire or re-
place the
wiring.
2 Do a check of the black wire and connectors between J7 (pin 5)
and the key switch.
3 Do a check of the blue wire and connectors between J7 (pin 6)
and the key switch.
Key
switch
4 Do a check of that the black wire from connector J7 (pin 5) and the
blue cable from J7 (pin 6) makes contact when the key is in “OFF"
position.
Replace the
key switch
662 - 001 - 23.10.2018 Troubleshooting - 77
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