Toro Greensmaster eTriFlex 3360 Service Manual page 150

Testing the T6: Precharge Controller (Model 04590) (continued)
Electrical System: Testing the Electrical Components
4. Access the InfoCenter Diagnostics > Precharge > Inputs screen.
g311218
Logic V
• If 48V system voltage is present, the T1: primary controller has energized
the logic relay and power is being supplied to the precharge controller
precharge input (connector P02 pin 6).
• If – – – appears, the controller is not communicating on the CAN bus.
Voltage must be present at the controller logic circuit (connector P03 pin 6)
before communication can occur on the CAN bus.
If voltage is not present at the logic circuit, the logic circuit fuse or
logic circuit wiring is damaged. The fuse and circuit wiring should be
checked for corrosion or damage and cleaned, repaired, or replaced as
necessary.
If logic voltage is present at the controller, and CAN bus communication
is suspect, the CAN bus circuit is damaged. The CAN bus wiring
should be checked for corrosion or damage and cleaned or repaired
as necessary. The precharge controller CAN bus transceiver can also
be tested if necessary; refer to
bus (page 5–32).
• If 00.0V is present, the logic relay or logic circuit wiring is damaged. The
relay and circuit wiring should be checked for corrosion or damage and
cleaned, repaired, or replaced as necessary.
Bus V
• If 48V system voltage is present, the main contactor has closed and
48V bus voltage is present at the precharge controller precharge output
(connector P02 pin 3). To achieve this, the T1: primary controller has
commanded the T6: precharge controller via a CAN message to provide a
path to ground (precharge controller OUT 2) for the 48 VDC main contactor
coil to energize and close the main contactor . Precharge was successful.
• If 00.0V is present, the main contactor or circuit wiring (including the
precharge controller OUT 2 circuit) is damaged. The contactor and circuit
wiring should be checked for corrosion or damage and cleaned, repaired,
or replaced as necessary.
T6: Precharge Controller Inputs
Figure 52
Testing Devices (Nodes) on the CAN
Page 5–46 Greensmaster® eTriFlex 3360 and 3370
19239SL Rev B