TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
5.
HAND-HELD SPOTLIGHT DOES NOT OPERATE (continued).
4.
TEST OPTIONS
KNOWN INFO
Voltage Test.
Error codes, EC 11 and
Are 2228 volts mea-
EC 12.
sured on wire no. 40 at
REASON FOR QUESTION
Spotlight bulb OK.
worklight switch?
Both worklight and
The voltage source for
spotlight are inoperative.
the CBT worklight
Worklight switch OK.
switch is wire no. 40 in
the HEMTT cab wiring
POSSIBLE PROBLEMS
harness. Spotlight will
not operate if this wire
Wire no. 40 faulty.
is defective.
Repair wire (see
schematic,
NO
YES
Fault not corrected.
Notify supervisor.
4-102
Change 1
