TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
5.
HAND-HELD SPOTLIGHT DOES NOT OPERATE (MODEL A ONLY) (continued).
5.
KNOWN INFO
TEST OPTIONS
Worklight OK.
Spotlight bulb OK.
measured between the
REASON FOR QUESTION
worklight switch (terminal
POSSIBLE PROBLEMS
with two wires) and the
Power is transferred from
supply harness connector
Supply harness faulty.
the cab worklight switch
(P1), position G?
Cab control box faulty.
to the cab control box via
Linking harness faulty.
the supply harness.
Main junction box
harness faulty.
Spotlight harness faulty.
Replace supply harness
NO
YES
4-104
Change 1