Toro 4100-D service manual TEC-5002 Controller

TEC-5002 Controller

Groundsmaster 4100--D machines use a Toro Electron- ic Controller (TEC) to control the operation of the hy- draulic cooling fan. The controller is attached to the operator platform under the console housing cover (Fig. 34).

Logic power is provided to the controller as long as the battery cables are connected to the battery. A 2 amp fuse in a fuse holder near the battery provides circuit protection for this logic power to the controller.

The TEC--5002 controller monitors the states of the fol- lowing components as inputs: ignition switch, hydraulic temperature sender, engine coolant temperature send- er and cooling fan switch.

The TEC--5002 controller controls electrical output to the engine cooling fan hydraulic valve solenoid coils (speed and direction). Circuit protection for TEC--5002 outputs is provided by fuse F9 (7.5 amp).

Because of the solid state circuitry built into the TEC, there is no method to test the controller directly. The con- troller may be damaged if an attempt is made to test it with an electrical test device (e.g. digital multimeter or test light).

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	Figure 34
1. Fuses	2. TEC location

Electrical System

Groundsmaster 4100--D Page 5 -- 23 Electrical System