TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
6.
INDICATOR/PANEL LIGHTS DO NOT OPERATE (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
TEST OPTIONS
1.
KNOWN INFO
Visual inspection.
None.
Is circuit breaker
CB13 OK (not
REASON FOR QUESTION
tripped)?
POSSIBLE PROBLEMS
CBT indicator/panel light
CB13 circuit breaker
operation is activated by
tripped.
supply voltage provided
Supply harness faulty.
from the HEMTT chassis
Control box circuit board
through CB13. If the
faulty.
circuit breaker is tripped,
Relay no. K4 faulty.
the indicator/panel lights
will not work.
Reset circuit
NO
breaker.
YES
Change 1
