Testing Electrical Circuits - Toro Greensmaster e1021 Diagnostic Manual

If there is damage to the outer insulation only, or if the damage to the shielding is abrasion or deformation only
with no broken strands, repair the wire harness as follows:
1. Clean the damaged area of the part with isopropyl alcohol.
2. Dry the part with a clean lint-free cloth.
3. Wrap the damaged area with 2 layers of all-weather electrical tape or an equivalent.
Note:
Ensure that the tape extends past the damage by a minimum of 1.3 cm (1/2 inch).
Note:
Heat shrink tape that is properly installed with the same precaution as electrical tape is acceptable.
Install the heat shrink tape according to the manufacturer's instructions.
Attaching Wire Harnesses
Properly attaching the wire harnesses to the machine helps keep the connectors from loosening and protects
the harnesses from accidental damage caused by vibration.
•
Ensure that no device used to attach a wire harness to the machine can rotate or slide freely on the wire
harness.
•
For wires not contained in convoluted tubing or protective sleeving, secure the wires with electrical tape
or a cable tie every 10 to 15 cm (4 to 6 inches).
•
For split-loom, convoluted tubing, ensure that the tape or cable ties are 1.3 cm (1/2 inch) away from any
connectors or labels.

Testing Electrical Circuits

Important:
The Greensmaster eFlex 1021 and e1021 use a battery-based electrical system. Actual
voltage measurements will vary, depending on the charge level of the battery.
Important:
The machine frame is not used as an electrical ground. Ground is distributed through the
machine wiring.
WARNING
The lithium-ion battery contains high voltage, which could burn or electrocute you.
• Never attempt to open the battery.
• Do not place anything in the connector on the battery other than a Toro wire harness
connector made for the product.
• Do not allow tools or vehicle components to complete the battery circuit.
• Use extreme care when handling a battery with a cracked case.
• Remove a battery with a cracked case immediately.
• Use only the Toro battery charger designed for the battery.
Testing for a Short Circuit
A short circuit is an abnormal electrical connection between 2 electrical circuits. You can diagnose a short circuit
by performing voltage checks and/or continuity tests.
•
A short circuit to ground before an electrical component usually causes the fuse for the circuit to open.
•
A short circuit to ground after an electrical component usually causes the electrical component to stay
on as long as there is power to the component.
Use a multimeter to test between the identified wire harness connector pins or component terminals and
the suspected points of failure.
For accurate resistance and/or continuity checks, electrically isolate the component being tested by
disconnecting all wiring or removing it from the circuit.
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