KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
If continuity is not present,
relay K2 is faulty.
7.
e4. 24 VDC CIRCUITS DO NOT OPERATE (CONT)
NO
Replace relay K2 (para 7-9).
YES
POSSIBLE PROBLEMS
Faulty relay K2.
Faulty dashboard cable
assembly.
Is 76-99 ohms resistance
present from relay K2
terminal 85 to terminal 86?
TM 9-2320-365-20-1
2-270 Change 1
Resistance Test or
STE/ICE-R Test #91
Service drive lights OK.
Circuit breaker CB70 OK.
Batteries OK.
100 AMP reverse polarity
relay OK.
100 AMP reverse polarity
relay to power distribution
panel (PDP) 24 VDC cable
OK.
Battery to 100 AMP reverse
polarity relay 24 VDC cable
OK.
200 AMP reverse polarity
relay OK.
200 AMP terminal block OK.
Battery to 200 AMP terminal
block 24 VDC cable
assembly OK.
200 AMP terminal block to
reverse polarity relay 24
VDC battery cable OK.
200 AMP terminal block to
reverse polarity relay 24
VDC load cable OK.
200 AMP terminal block to
power distribution panel
(PDP) 24 VDC cable OK.
Master power switch OK.
