TM 9-2320-211-20-2-1
SAMPLE TROUBLESHOOTING PROCEDURE
of the sample procedures is to help you see how detailed troubleshooting procedures
test equipment procedures, and summary troubleshooting procedures are used to find
faults in a system.
fuel system troubleshooting procedure for the symptom, STARTER MOTOR WILL NOT
CRANK ENGINE. This symptom is one you will have when you try to start your truck
and certain parts on the truck are not working correctly. In each numbered box,
instructions are given which tell you what to do, and how to do it. A large dot is
placed next to the "what to do" instructions, and small dots next to the "how to do it"
instructions.
a. Box
number
gives general instructions on getting the truck ready before
you start to troubleshoot.
b. Box number
gives fault isolation test instructions. In this case you are
told to check the starting system circuit for loose, burned or broken leads and con-
nectors. To help you find the leads and connectors that you must check, you are told
to see figure 28-1, given in chapter 28. Figure 28-1 is a support diagram that gives
you a detailed picture of the starter system circuit. Figure 28-1 also tells you what
you must look for to decide if there is a problem in the starter system circuit. These
support diagrams and tests, or checks, are often referred to in detailed troubleshoot-
ing procedures to help you find the problem and fix it. After you do the tests, you
read the question at the bottom of box number
. If the leads or connectors are
burned or broken, the answer to the question is
,
so you go to the next box.
c. Box
number
gives you a corrective action. In this case the fault is either
burned or broken leads or connectors. The corrective action is what you do to fix the
fault, which is to replace any burned or broken lead or connectors. If the starter
motor still will not crank the engine, it could mean that there are other faults in the
starter circuit system. When this happens, go back to the beginning of the procedure
and do each step again until you find the other faults.
d. Sometimes the corrective actions given for a fault will tell you what to do to fix
the fault, but will not give you detailed instructions on how to fix it. Instead, you
will be told to refer to another volume in this manual for these instructions. Box
number
is an example of this. If the answer to the, questions that all the fault
, it means that the symptom cannot be
isolation test instruction boxes ask is
corrected at the organizational level of maintenance. When this happens you are given
the instruction "Tell Direct Support Maintenance."
given is the Simpson 160 multimeter DC VOLTAGE TEST. This procedure tells you
how to use the multimeter to do the voltage tests you will need when you do electrical
system troubleshooting.
