KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
5.
e4. 24 VDC CIRCUITS DO NOT OPERATE (CONT)
NO
Go to step 14 of this fault.
YES
Continuity Test or
STE/ICE-R Test #91
This question eliminates
possible problems and
determines where
troubleshooting continues.
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.
POSSIBLE PROBLEMS
Faulty relay K2.
Faulty master power switch.
Faulty dashboard cable
assembly.
Is continuity present from
relay K2 socket 86 on PDP
to circuit breaker CB70
socket 3 on PDP?
TM 9-2320-365-20-1
2-266 Change 1
