Toro Groundsmaster 360 Service Manual page 294

Toro Electronic Controller (TEC) (continued)
Electrical System: Testing the Electrical Components
The machine Electrical Schematics and Wire Harness Drawings/Diagrams in
Appendix A (page A–1)—Foldout Drawings can be used to identify possible
circuit problems between the controller and the input/output devices (e.g.,
switches and solenoid coils).
Because of the solid state circuitry built into the controller, there is no method to
test it directly. The controller may be damaged if an attempt is made to test it
with an electrical test device (e.g., digital multimeter).
Before performing any welding on the machine, disconnect both
negative and positive battery cables from the battery, disconnect
the wire harness connector from the TEC and engine ECU, and
disconnect the terminal connector from the alternator. This will
prevent damage to the electrical system of your Groundsmaster.
IMPORTANT
Page 5–58 Groundsmaster 360
16225SL Rev C