Toro Greensmaster eTriFlex 3360 Service Manual page 128

Testing the CAN bus (continued)
Electrical System: Testing the Electrical Components
g287575
1. CAN bus isolation module
4. Set the key switch to the O
5. Use a multimeter (DC voltage setting) to check for 12 VDC across terminals
A and B of the machine wire harness connector. If no voltage is present,
check the wire harness for damage; refer to
Note: There is not a test procedure for the isolation module. Continue
testing the remaining components of the CAN bus before replacing the
isolation module.
6. Set the key switch to the O
7. Use a multimeter (ohms setting) to measure and record the resistance of
CAN A across the machine wire harness connector terminals C and D, and
CAN B across terminals E and F.
• A reading of 0 to 50 ohms indicates one of the devices (nodes) on the
CAN side being tested is faulty; refer to
CAN bus (page 5–31).
• A reading of 55 to 65 ohms indicates the CAN side being tested is intact.
• A reading of 110 to 140 ohms indicates one of the CAN terminator resistors
on the CAN side being tested is not connected or damaged; refer to
bus Terminator Resistors (page
• A reading of 100K to 200k ohms indicates both of the CAN terminator
resistors on the CAN side being tested are not connected or damaged;
refer to CAN bus Terminator Resistors (page
• A reading of more than 500k ohms indicates damage to the wiring of the
CAN side being tested; refer to
8. Connect the CAN bus isolation module to the machine wire harness after
testing.
Figure 37
(right side cover removed)
2. Machine wire harness connector
position.
N
position.
FF
Testing Devices (Nodes) on the
5–89).
Appendix A (page
Page 5–30
Appendix A (page A–1).
5–89).
A–1).
Greensmaster® eTriFlex 3360 and 3370
19239SL Rev A
CAN