Electrical Systems
11
When troubleshooting an electrical problem:
Know the electrical system for the machine:
Electrical System Problems
1.
Study the schematics, Operators Manual and Service
Manual.
Know how the system works and what voltage and
resistance measurements you should find.
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Understand the system
Talk to the operator
Identify the problem
Try to repeat the problem
List possible causes
Test the most likely cause
2.
Talk to the operator:
How did the machine act just as it started to
malfunction?
Was any “do-it-yourself” service performed or did
anyone else attempt to repair the machine?
How was the machine used and when was
maintenance last performed?
Make repairs before
doing more tests
3.
Operate the machine:
Operate the machine in conditions simulating when
the malfunction occurred. Verify what the operator
described.
Are the gauges and warning lights operating
correctly.
Check for any unusual operation, sounds, smells, or
smoke. When during the operating cycle does this
occur.
4.
Inspect the machine:
Check for bypassed safety interlock switches or
other components.
Check the battery. Is it fully charged? Are the
terminals corroded?
Look for corroded, loose or damaged wires and
connections, including ground connections.
5.
List possible causes:
Note what was reported by the operator and verified
by you.
List what you found during your inspection.
Remember that there may be more than one cause
leading to the failure or malfunction.
6.
Determine which cause is most likely the problem:
Look at your list of most possible causes and
determine which are the most likely. Use the
troubleshooting charts in the Service Manual.
7.
Test your findings
Operate the system with a volt-ohm multi-meter
connected to the suspected malfunctioning circuit.
Use the diagnostic lamp's) and/or diagnostic display
if the unit is equipped with an electronic control
system (ECU/ECM/SCM). It may be necessary to
replace or adjust a component to verify your findings.
Toro University Technical Training
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro 09170SL |
| Download File |
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| Document Type | Catalog |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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