TM 9-2330-384-14&P
Table 4-2. Unit Troubleshooting Procedures (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
LIGHT FLICKERS
3.
WARNING
When troubleshooting an electrical malfunction, ALWAYS disconnect
intervehicular cable from semitrailer. Failure to follow this warning may
create a spark and explosion, resulting in serious injury or death to
personnel.
NOTE
Refer to paragraph 4-30 to determine routing of electrical wires and
location of electrical components.
To ensure an accurate reading, probes of multimeter must contact bare
wire and unpainted metal surfaces.
Flickering lights are most often caused by loose or corroded connectors.
Check for these conditions while performing the troubleshooting steps.
Check that affected lamp is not loose in light socket (see paragraph 4-18).
Step 1.
Install lamp securely in light socket (see paragraph 4-18).
Step 2. Repeat steps 2-11 of Malfunction 1, "Single Light Does Not Operate".
CONVOY WARNING LIGHT DOES NOT OPERATE
4.
WARNING
When troubleshooting an electrical malfunction, ALWAYS disconnect
intervehicular cable from semitrailer. Failure to follow this warning may
create a spark and explosion, resulting in serious injury or death to
personnel.
NOTE
Refer to paragraph 4-30 to determine routing of electrical wires and
location of electrical components.
To ensure an accurate reading, probes of multimeter must contact bare
wire and unpainted metal surfaces.
Check continuity in blue wire between pin #7 at front of 12-volt electrical connector
Step 1.
and outside post of circuit breaker #2.
If there is continuity, that wire is O.K. Go to step 2.
If there is no continuity, replace wire (see paragraph 4-17). While replacing
wire, visually inspect for a bent or corroded connector pin. If pin is damaged,
replace electrical connector (see paragraph 4-17). If malfunction still exists,
go to step 2.
4-20
