Toro Groundmaster 31900, Service Manual, Page: 213 / 355

TDM Display/Controller (continued)
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Figure 86
1. Main wire harness connector P100 2. TDM display/controller
A 20 pin wire harness connector is attached to the controller. The connection
terminal function for the controller and the wire harness connector pins are
shown above. Check the module and the harness connector for damage or
corrosion and clean or repair if necessary.
Because of the solid state circuitry built into the controller, there is no method to
test the controller directly. A controller may be damaged if an attempt is made to
test it with an electrical test device (e.g. digital multimeter or test light).
Note: If the TDM display/controller is replaced for any reason, system software
needs to be reloaded (contact an Authorized Toro Distributor for assistance).
Groundsmaster ® 3200, 3300 and 3310 Page 6–21 Electrical System: Testing the Electrical Components
19240SL Rev A