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Page Title:
GENERAL TROUBLESHOOTING INSTRUCTIONS |
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 TM 10-3930-673-20-1
NOTE
This is the symbol for a note. Notes are located directly above the test to which they refer. Notes
provide additional information for performing a test.
(5) Before taking any action to diagnose a malfunction, follow the guidelines below:
(a) Question the vehicle operator to obtain any information that might help you determine the cause of the
problem.
(b) Use all your senses (especially your common sense) to observe and locate troubles.
(c) Never overlook the possibility that the problem could be of simple origin - you may be able to fix it with minor
adjustments.
(d) Isolate the system where the malfunction occurs, then locate the defective component within the system.
(e) Use the test instruments specified to help you isolate the problem.
NOTE
The troubleshooting makes use of the Simplified Test Equipment for Internal Combustion Engines-
Reprogrammable (STE/ICE-R) and conventional methods for testing and fault isolation.
a. Simplified Test Equipment for Internal Combustion Engines - Reprogrammable (STE/ICE-R).
STE/ICE-R tests are incorporated into the standard troubleshooting test to aid in fault isolation. The STE/ICE-R acts as a
conventional digital multimeter to measure voltage, current, and resistance. It can also measure pressure, speed, compression
unbalance, engine power, and some specialized battery and starter evaluations. The STE/ICE-R is powered by the forklift
battery. The complete system includes a test meter (VTM), cables, transit case, and technical publications. The STE/ICE-R can
make TK mode measurements while connected to the batteries. STE/ICE-R tests are referenced. Certain tests require use of a
transducer from the STE/ICE-R Additional Authorized List (AAL). For STE/ICE-R Vehicle System Diagnostic Checks, refer
to Para 2-18.
b. General Electrical Troubleshooting Procedures.
WARNING
Remove rings, bracelets, wristwatches, neck chains, etc., before working on any vehicle. Jewelry can
catch on equipment and cause injury, or may short across an electrical circuit and cause severe burns
or electrical shock.
CAUTION
Use proper sized test leads when checking for resistance, continuity, or voltage at connectors or
damage to equipment can result.
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