Toro Groundmaster Series Service Manual page 250

Testing the CAN bus Terminator Resistors (continued)
Electrical System: Testing the Electrical Components
4. Remove the cover from the Yanmar SA-D connector located behind the
operator's console. Use a multimeter (ohms setting) to check the wire
harness.
Location Harness Connector
1 Main
2 Main
5. If testing determines the integrated termination resistor is faulty, replace the
engine ECU; contact an Authorized Toro Distributor for assistance.
6. After testing is complete, install the SA-D connector cap, and make sure the
external terminator resistor is fully installed into the connector and secured
to the wire harness.
7. Install the operator's console covers if previously removed.
Pin Wire Color
P20 Red/White
2
P20 3 Black/White
Page 6–58
Expected
Connector Graphic
Reading
120 ohms
Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A