TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
10. NO TRANSIT LIGHT DOES NOT OPERATE PROPERLY (MODEL A ONLY).
INITIAL SETUP
Tools and Special Tools
Equipment Condition
Multimeter (ANURM105C)
Engine turned off (TM 9-2320-279-10)
Tool Kit, General Mechanic's: Automotive
Parking brake applied (TM 9-2320-279-10)
(SC 5180-90-N26)
Wheels chocked (TM 9-2320-279-10)
START
1.
KNOWN INFO
TEST OPTIONS
None.
Visual inspection.
Is the NO TRANSIT
WHEN LIT indicator
REASON FOR QUESTION
bulb always out
POSSIBLE PROBLEMS
(never comes on)?
To isolate the failure
NO TRANSIT WHEN LIT
mode.
indicator bulb faulty.
Hook arm down proximity
switch adjustment.
Hook arm down proximity
switch faulty.
Cab control box faulty.
Linking wire harness
faulty.
Main junction box
harness faulty.
Light comes on
Relay no. K3 faulty.
NO
sometimes; go
to Step 8.
YES
Change 1
