2-6. INTRODUCTION TO LOGIC TREE TROUBLESHOOTING (CONT)
(d) Isolate the system where the malfunction occurs, then locate the defective component within
(e) Use the test instruments specified to help you isolate the problem.
2-7. GENERAL TROUBLESHOOTING INSTRUCTIONS
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.
b. General Electrical Troubleshooting Procedures.
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.
connectors or damage to equipment can result.
· The piece of electrical test equipment used will be referred to as the "multimeter." The
multimeter's red test lead will be referred to as the "positive (+) multimeter lead." The
multimeter's black test lead will be referred to as the "negative () multimeter lead."
· If your multimeter does not operate in the way described in the following steps, learn
how it operates before performing troubleshooting.
· Multimeter leads must remain in contact with the circuit being tested for a minimum
of three seconds to obtain a reading.