TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
5.
HAND-HELD SPOTLIGHT DOES NOT OPERATE (MODEL A ONLY) (continued).
TEST OPTIONS
8.
KNOWN INFO
Is there continuity
Continuity Test.
Spotlight bulb OK.
between the main
Worklight OK.
REASON FOR QUESTION
junction box connec-
Supply harness OK.
tor (J4), position E,
Cab control box OK.
The power source for the
and the junction box
Linking harness OK.
spotlight is transferred
terminal strip, posi-
from the main linking
POSSIBLE PROBLEMS
tion 5?
harness to the terminal
Main junction box harness
strip in the main junction
faulty.
box by this wire harness.
Spotlight harness faulty.
Replace junction
NO
box wire harness
YES
4-110
Change 1
