Toro Groundmaster Series Service Manual page 212

TDM Display/Controller (continued)
TDM Display/Controller Inputs (continued)
Electrical System: Testing the Electrical Components
INPUT NUMBER
IN 1 Key Switch – Start
IN 2
IN 3
IN 4
Lower Switch – Lift
IN 5 Parking Brake Switch
IN 6
TDM Display/Controller Outputs
OUTPUT NUMBER
OUT 1
OUT 2
OUT 3
OUT 4
The machine electrical schematic and wire harness drawings in
A (page A–1) can be used to identify possible circuit problems between the
controller and the input or output devices.
When testing for wire harness continuity at the connector for
the controller, take care to not damage the connector pins with
multimeter test leads. If connector pins are enlarged or damaged
during testing, connector repair may be necessary for proper
machine operation.
DESCRIPTION INPUT NUMBER
PTO Switch
Cutting Unit Lift
Lower Switch –
Lower
Cutting Unit Lift
Seat Switch
Model 31900, 31901, 31907 and 31909 =
Start Interlock Relay (coil), Fuel Pump, and
Model 31902 and 31903 = Start Interlock Relay
Hydraulic Solenoid Valve SV1 (cutting unit lift)
Hydraulic Solenoid Valve SV2 (cutting
IMPORTANT
Page 6–20
DESCRIPTION
IN 7 Traction Neutral
Switch
AIN 1 Cutting Unit High Trim
Height Switch
AIN 2 Model 31900, 31901,
31907 and 31909 =
Oil Pressure Switch
Model 31902 and
31903 = Throttle
Switch – Decrease
Speed
AIN 3 Model 31900, 31901,
31907 and 31909
= Engine Coolant
Temperature Sender
Model 31902 and
31903 = Throttle
Switch – Increase
Speed
AIN 4 Display Screen Select
Button
DESCRIPTION
PTO Clutch
Fuel Stop Solenoid (hold coil)
(coil) and Engine ECU (start signal)
unit lower)
Appendix
Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A