TM 9-2330-384-14&P
Table 3-1. Operator Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRlCAL SYSTEM
1. ALL LAMPS FAIL TO LIGHT
Step 1.
Check that light switch in tractor is set to ON (see TM 9-2320-273-10 or
TM 9-2320-283-10).
Turn switch to ON position (see TM 9-2320-273-10 or TM 9-2320-283-10).
Step 2.
Check for tripped circuit breakers in tractor (see TM 9-2320-273-10 or
TM 9-2320-283-10).
Reset circuit breakers (see TM 9-2320-273-10 or TM 9-2320-283-10).
Step 3.
Check to see that tractor's inter-vehicular electrical cable is securely connected to
correct electrical connector on voltage control unit at front of semitrailer (see para-
graph 2-12).
Connect tractor's intervehicular electrical cable securely to proper electrical
connector (see paragraph 2-12).
Step 4.
Check for damage to tractor's intervehicular electrical cable (see
TM 9-2320-273-10 or TM 9-2320-283-10). Check for dirty or corroded pins on elec-
trical connectors on voltage control unit (see paragraph 1-12).
Clean pins on semitrailer electrical connectors with a wire brush or clean rag
and apply corrosion preventive compound (Item 7, Appendix E). If damage to
tractor's intervehicular electrical cable or electrical connectors on
semitrailer's voltage control unit is found, notify unit maintenance.
2. ONE OR MORE LAMPS FAIL TO LIGHT
Step 1.
Check for tripped circuit breakers in tractor (see TM 9-2320-273-10 or
TM 9-2320-283-10).
Reset circuit breakers (see TM 9-2320-273-10 or TM 9-2320-283-10).
Step 2.
Check for damage to tractor's intervehicular electrical cable (see TM 9-2320-
273-10 or TM 9-2320-283-10). Check for dirty or corroded pins on electrical con-
nectors on voltage control unit (see paragraph 1-12).
Clean pins on semitrailer electrical connectors with a wire brush or clean rag
and apply corrosion preventive compound (Item 7, Appendix E) . If damage to
tractor's intervehicular electrical cable or electrical connectors on
semitrailer's voltage control unit is found, notify unit maintenance.
Trace electrical conduit between malfunctioning lamp and voltage control unit at
Step 3.
front of semitrailer (see paragraph 1-12). Check for breaks or other damage to
electrical conduit.
Notify unit maintenance if breaks or other damage is found.
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