Troubleshooting
Checking Fault Codes
If the diagnostic light indicates that there is a system fault (refer to
Diagnostic Light (page 11)
), check the fault
codes to determine what is wrong with the machine.
Entering Diagnostic Mode and Checking the Codes
1.
Turn the key to the O
FF
position to turn off the power.
2.
Pull the tethered cap off of the 2 diagnostic, shunt connectors (
, A).
3.
Connect the diagnostic, shunt connectors together (
, B).
Figure 40
4.
Turn the key to the R
UN
position to turn on the power.
5.
Count the number of flashes to determine the fault code, then consult the following table:
Note:
If there are multiple faults, both faults will flash, then a long pause, then the flash sequences will repeat.
Code
LED Flash Pattern
Behavior
Details
Machine Specific Faults
Connector not plugged
in; locate the loose or
disconnected harness
connector and connect it.
Something wrong in the wiring;
contact your Toro Distributor.
11
Blink once, pause, blink once,
long pause, then repeat
Lost communication with
BASE.
BASE is bad; contact your Toro
Distributor.
12
Blink once, pause, blink twice,
long pause, then repeat
Version incompatibility of the
BASE and/or HH
Wrong software (install
the correct software from
TORODIAG); contact your Toro
Distributor.
13
Blink once, pause, blink 3
times, long pause, then repeat
Wrong HH—not implemented
on RevA
Wrong product association
(i.e. trying to update software
on a MH–400 with a ProPass
handheld)
29