TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
5.
HAND-HELD SPOTLIGHT DOES NOT OPERATE (continued).
3.
TEST OPTIONS
KNOWN INFO
Worklight Switch Test.
Error Codes, EC11 and
Is there continuity
EC 12.
between the two
REASON FOR QUESTION
Spotlight bulb OK.
terminals on the cab
Both worklight and
worklight switch?
Spotlight will not
spotlight are inoperative.
operate if cab worklight
switch is defective.
POSSIBLE PROBLEMS
Worklight switch faulty.
Wire no. 40 faulty.
Replace worklight
NO
switch (TM 9-
2320-279-20).
YES
4-100
Change 1
