TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
10. NO TRANSIT LIGHT DOES NOT OPERATE PROPERLY (MODEL A ONLY)
(continued).
2.
KNOWN INFO
TEST OPTIONS
NO TRANSIT WHEN LIT
Continuity Test.
Is the NO TRANSIT
indicator light never
WHEN LIT indicator
REASON FOR QUESTION
comes on.
bulb OK?
The most likely cause is
POSSIBLE PROBLEMS
a defective NO TRANSIT
WHEN LIT indicator
NO TRANSIT WHEN LIT
bulb.
indicator bulb faulty.
Hook arm down proximity
switch adjustment.
Hook arm down proximity
switch faulty.
Replace NO
Cab control box faulty.
TRANSIT WHEN LIT
NO
Linking wire harness
indicator bulb (para
faulty.
Main junction box
harness faulty.
Relay no. K3 faulty.
YES
4-168
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