Fault Possible
cause
Steps Troubleshooting Action
10 Measure the resistance of the relay. It must be 3.7-4.2 Ω. Replace the
starter re-
lay.
11 Make sure the relay clicks when the key is turned to "Start". Replace the
starter re-
lay.
Parking
brake mi-
croswitch
malfunc-
tion.
12 Do a check of the parking brake microswitch. Replace the
micro-
switch.
PTO but-
ton
13 Loosen connector J6 and measure the resistance between the or-
ange, gray and yellow pairs in the wire connectors. When the PTO
switch is pressed, must only the orange wires be connected.
When the PTO button is lifted, the orange wires must not be con-
nected but the other wires must be connected.
Replace the
PTO button.
Wiring
fault.
14 Do a check of the red, blue, white and brown wires and connec-
tions going from J1.
Repair the
wire or re-
place the
wiring.
15 Do a check of the grey wires and connections going from J7.
16 Do a check of the orange wires and connections going from J6.
17 Do a check of the blue and brown wires and connections going
from J3.
18 Do a check of the blue and yellow wires and connections going
from the parking brake microswitch.
Key
switch
19 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.
Replace the
key switch.
Circuit
board
20 Measure the voltage on J7 (pin 2) and J7 (pin 4). The voltage must
be equal to the battery voltage.
Replace the
circuit
board.
The start motor
operates cor-
rectly but the
product does
not start.
Wiring
fault.
1 Do a check the pink wire and connectors between J1 (pin 4) and
the fuel valve.
Repair the
wire or re-
place the
wiring.
2 Do a check the black wire and connectors between J1 (pin 6) and
the engine.
The product
stops when the
parking brake
is released.
Defective
seat mi-
croswitch.
1 Measure the resistance between the wire going to J3 (pin 1) and
the cable going to J3 (pin 4). With no operator in the seat, the re-
sistance must be low. When the operator in the seat, the resist-
ance must be high.
Do a check
of the seat
microswitch
and con-
nector, re-
place if nec-
essary
The product
stops when the
operator lifts
from the seat
with the park-
ing brake ap-
plied.
PTO ena-
bled
1 Do a check of the PTO switch. Replace the
PTO switch.
76 - Troubleshooting 662 - 001 - 23.10.2018
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