TROUBLESHOOTING
Troubleshooting - 67
Output Circuits
Specific input conditions must be satisfied before
each output circuit can function.
Starter (K)
The light indicates that power is being sent to the
starter solenoid. For the starter output to function,
the parking brake must be set and the power unit’s
forward/reverse control must be in neutral.
PTO (L)
The light indicates that power is being sent to the
PTO clutch relay. For the PTO output to function,
the operator must be on the seat.
If the PTO remote kit is installed and an attach-
ment such as the generator is connected, the
TCM will automatically enable the Remote PTO
function. In this mode the PTO switch on the gen-
erator replaces the seat switch criteria for the PTO
to function. The parking brake must be engaged
for the Remote PTO to function.
The following engine commands are engine spe-
cific.
12V Run (M)
This light indicates that power is being sent to the
engine control module in order for the engine to run.
For this light to operate, either the operator must
be sitting on the seat, or the parking brake must be
engaged and the forward/reverse control (SDLA)
must be in the neutral position.
Engine Stop Ground (N)
Not used on the 3400Y.
Diesel Pre-Heat (O)
This output controls the signal that activates and
deactivates the glow plugs.
