Taylor-Dunn MX6-00, Operation, Troubleshooting Manual

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ELECTRICAL TROUBLESHOOTING
SECTION 4 Main Sequence PAGE 3
Main Troubleshooting Sequence
Test Equipment Required:
•
Digital multimeter (DMM) with diode test function, FLUKE 79 model used in illustrations.
•
Shunt or clamp-on DC Ammeter to measure up to 400 amps.
•
Test light with a rated voltage equal to or exceeds maximum battery voltage or Taylor-
Dunn test light part number #62-027-00 for systems up to 48 volts.
•
Test harness, Taylor-Dunn #62-027-31. This troubleshooting guide assumes that the
vehicle is wired correctly. It is not intended to diagnose a vehicle that is not wired correctly.
•
These tools are available through your local Taylor-Dunn parts distributor.
IMPORTANT NOTES and INSTRUCTIONS
•
This troubleshooting guide assumes that the vehicle is wired correctly. It is not intended
to diagnose a vehicle that is not wired correctly.
•
This troubleshooting guide is not written to be able to locate a problem if there are multiple
component failures.
•
This troubleshooting guide assumes the batteries are good. Charge and test the batteries
before troubleshooting the control system.
•
DO NOT start in the middle of this troubleshooting guide. Start at the beginning and
complete each test in the order that they are written. Do not skip any test unless instructed
to do so. Once a problem is found, stop testing and repair the indicated problem. When
the repair is completed it is recommended that the control system be retested before
lowering the drive wheels to the ground.
•
This troubleshooting guide requires the use of a test light rated at the battery voltage of
the truck and the Taylor-Dunn Accelerator Module Test Harness. Troubleshooting CANNOT
be completed without these tools.
These test procedures must be performed in the order they were
written. If the test result is good, then proceed to the next test or
go to the next section. Failure to do so may result in incorrect test
results.