Engine Electronic Control Unit (Ecu) (Fuel Injected Engines Only); Rear Frame Panel Cover - Toro Workman GTX Service Manual

Engine Electronic Control Unit (ECU) (Fuel Injected Engines only)

Vehicles with a fuel injected engine (Kohler ECH440)
use an electronic control unit (ECU) for engine manage-
ment. The ECU is located at the front of the engine be-
low the valve cover. All wire harness electrical
connectors should be plugged into the ECU before the
machine ignition switch is moved from the OFF position
to either the RUN or START position.
If the engine ECU identifies that an engine problem ex-
ists, the engine speed may be reduced or the engine
might stop. The Kohler EFI Diagnostic Software Kit
(Kohler P/N 25 761 23- S) and the adapter harness
(Kohler P/N 25 176 23) is required to see fault codes.
view engine data, access service information, and aid in
troubleshooting engine issues. This kit includes the soft-
ware and a communication cable. The adapter harness
must be purchased separately. The diagnostic con-
necter is secured to the left side of the swing arm under
the air cleaner assembly.
Kohler also offers an EFI Service Tool Kit (Kohler P/N 24
761 01- S) which includes a pressure gauge, a test light,
fittings, wiring, and adapters required to maintain the fu-
el system. Kohler diagnostic software and service tool
kits can be obtained through Kohler Distributors and
Dealers or purchased online.
IMPORTANT: Do not plug or unplug the engine ECU
for a period of forty (40) seconds after the machine
key switch is turned OFF. The ECU may remain ener-
gized even though the ignition switch is OFF.

Rear Frame Panel Cover

A panel cover is secured to the top of the rear frame be-
hind the seats to prevent debris entry to the front of the
swing arm area. The cover can easily be removed by re-
leasing the latches and lifting the cover from the rear
frame to improve engine access.
Workman GTX Gasoline
4
G247218
1. EFI Engine
2. Fuel Injector
If the engine ECU is to be disconnected for any reason,
make sure that the ignition switch is in the OFF position
with the key removed before disconnecting the engine
ECU. Also, to prevent possible ECU damage when
welding on the machine, disconnect and remove the en-
gine ECU from the machine before welding.
1. Rear frame
2. Panel cover
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Figure 5
3. Engine ECU
4. Oxygen Sensor
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3
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Figure 1
3. Latch (2 used)
Gasoline Engine