KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
Is continuity present from
terminal lug TL44 to
terminal X1 on PDP?
12.
e4. 24 VDC CIRCUITS DO NOT OPERATE (CONT)
Continuity Test or
STE/ICE-R Test #91
YES
NO
Replace 100 AMP reverse polarity
relay to PDP 24 VDC cable (para 7-81).
Replace 100 AMP reverse
polarity relay (para 7-27).
If continuity is not present,
100 AMP reverse polarity relay
to PDP 24 VDC cable is faulty.
If continuity is present, 100
AMP reverse polarity relay is
faulty.
Service drive lights OK.
Circuit breaker CB70 OK.
Batteries OK.
Battery to 100 AMP reverse
polarity relay 24 VDC cable
OK.
POSSIBLE PROBLEMS
Faulty 100 AMP reverse
polarity relay.
Faulty 100 AMP reverse
polarity relay to power
distribution panel (PDP) 24
VDC cable.
CAUTION
Read CAUTION
on following page.
TM 9-2320-365-20-1
2-274.6 Change 1